Johannes, Jan or Johan Vermeer (baptized in Delft on 31 October 1632 as  Johannis, and buried in the same city under the name Jan on 16 December 1675)  was a Dutch Baroque painter who specialized in exquisite, domestic interior  scenes of middle class life. Vermeer was a moderately successful provincial  genre painter in his lifetime. He seems never to have been particularly wealthy,  leaving his wife and children in debt at his death, perhaps because he produced  relatively few paintings.
 Vermeer worked slowly and with great care, using bright colours and  sometimes expensive pigments, with a preference for cornflower blue and yellow.  He is particularly renowned for his masterly treatment and use of light in his  work.
 Recognized during his lifetime in Delft and The Hague, his modest celebrity  gave way to obscurity after his death; he was barely mentioned in Arnold  Houbraken's major source book on 17th century Dutch painting (Grand Theatre of  Dutch Painters and Women Artists), and was thus omitted from subsequent surveys  of Dutch art for nearly two centuries. In the 19th century Vermeer was  rediscovered by Gustav Friedrich Waagen and Théophile Thoré-Bürger, who  published an essay attributing sixty-six pictures to him, although only  thirty-five paintings are firmly attributed to him today. Since that time  Vermeer's reputation has grown, and he is now acknowledged as one of the  greatest painters of the Dutch Golden Age.
 Relatively little is known about Vermeer's life. He seems to have been  exclusively devoted to his art, living out his life in the city of Delft. The  only sources of information are some registers, a few official documents and  comments by other artists; it was for this reason that Thoré Bürger named him  "The Sphinx of Delft".
 On 31 October 1632, Johannes was baptized in the Reformed Church. His  father, Reijnier Janszoon, was a middle-class worker of silk or caffa (a mixture  of silk and cotton or wool). As an apprentice in Amsterdam Reijnier lived in the  fashionable Sint Antoniesbreestraat, then a street with many resident painters.  In 1615 he married Digna Baltus, and in 1620 Reijnier and his wife had a  daughter, who was baptized as Gertruy. In 1625 Reijnier was involved in a fight  with a soldier named Willem van Bylandt, who died from his wounds five months  later.Around the same time Reijnier started to deal in paintings, but in 1631 he  leased an inn called "The Flying Fox". In 1641 he bought a larger inn at the  market square, named after the Belgian town "Mechelen". The acquisition of the  inn constituted a considerable financial burden. When Vermeer's father died in  1652, Vermeer replaced him as a merchant of paintings.
 In 1653 Johannes Reijniersz Vermeer married a Catholic girl named Catharina  Bolnes. The blessing took place in a nearby and quiet village Schipluiden. For  the groom it was a good match. His mother-in-law, Maria Thins, was significantly  wealthier than he, and it was probably she who insisted Vermeer convert to  Catholicism before the marriage on 5 April. Some scholars doubt that Vermeer  became Catholic, but one of his paintings, The Allegory of Catholic Faith, made  between 1670 and 1672, reflects the belief in the Eucharist. Liedtke suggests it  was made for a Catholic patron, or for a schuilkerk, a hidden church. At some  point the couple moved in with Catharina's mother, who lived in a rather  spacious house at Oude Langendijk, almost next to a hidden Jesuit church. Here  Vermeer lived for the rest of his life, producing paintings in the front room on  the second floor. His wife gave birth to 14 children: four of whom were buried  before being baptized, but were registered as "child of Johan Vermeer".From  wills written by relatives, ten names are known: Maria, Elisabeth, Cornelia,  Aleydis, Beatrix, Johannes, Gertruyd, Franciscus, Catharina, and Ignatius.Quite  a few have a name with a religious connotation and it is very likely that the  youngest, Ignatius, was named after the founder of the Jesuit order.
 It is not certain where Vermeer was apprenticed as a painter, nor with  whom, but it is generally believed that he studied in his home town. While  Vermeer owned some paintings or drawings by Carel Fabritius it was suggested  that Fabritius was his teacher. The local authority, Leonaert Bramer, acted as a  friend but their style of painting is rather different. Liedtke suggests Vermeer  taught himself and had information from one of his father's connections. Some  scholars think Vermeer was trained under the Catholic painter Abraham Bloemaert.  Vermeer worked in a similar style as some of the Utrecht Carravagists. In Delft  Vermeer probably competed with Pieter de Hoogh and Nicolaes Maes who produced  genre works in a similar style.
 On 29 December 1653, Vermeer became a member of the Guild of Saint Luke, a  trade association for painters. The guild's records make clear Vermeer did not  pay the usual admission fee. It was a year of plague, war and economic crisis;  not only Vermeer's financial circumstances were difficult. In 1654, the city of  Delft suffered the terrible explosion known as the Delft Thunderclap that  destroyed a large section of the city. In 1657 he might have found a patron in  the local art collector Pieter van Ruijven, who lent him some money. In 1662  Vermeer was elected head of the guild and was reelected in 1663, 1670, and 1671,  evidence that he (like Bramer) was considered an established craftsman among his  peers. Vermeer worked slowly, probably producing three paintings a year, and on  order. When Balthasar de Monconys visited him in 1663 to see some of his work,  the diplomat and the two French clergymen who accompanied him were sent to  Hendrick van Buyten, a baker.
 In 1672 a severe economic downturn (the "Year of Disaster") struck the  Netherlands, after Louis XIV and a French army invaded the Dutch Republic from  the south (known as the Franco-Dutch War). During the Third Anglo-Dutch War an  English fleet and two allied German bishops attacked the country from the east  causing more destruction. Many people panicked; courts, theaters, shops and  schools were closed. Five years passed before circumstances improved. In the  Summer of 1675 Vermeer borrowed money in Amsterdam, using his mother-in-law as a  surety.
 In December 1675 Vermeer fell into a frenzy and suddenly died, within a day  and a half. Catharina Bolnes attributed her husband's death to the stress of  financial pressures. The collapse of the art market damaged Vermeer's business  as both a painter and an art dealer. She, having to raise 11 children, asked the  High Court to allow her a break in paying the creditors. The Dutch microscopist  Antonie van Leeuwenhoek, who worked for the city council as a surveyor, was  appointed trustee. The house, with eight rooms on the first floor, was filled  with paintings, drawings, clothes, chairs and beds. In his atelier there were  rummage not worthy being itemized, two chairs, two painter's easels, three  palettes, ten canvases, a desk, an oak pull table and a small wooden cupboard  with drawers.The painting Girl with a Pearl Earring (Dutch: Het Meisje met de  Parel) is one of Dutch painter Johannes Vermeer's masterworks and as the name  implies, uses a pearl earring for a focal point. The painting is in The  Mauritshuis in The Hague. It is sometimes referred to as "the Mona Lisa of the  North" or "the Dutch Mona Lisa".
 Nineteen of Vermeer's paintings were bequeathed to Catharina and her  mother, and the widow sold two other paintings to the Hendrick van Buyten in  order to pay off quite a debt.
 Vermeer had been a respected artist in Delft, but he was almost unknown  outside his home town. The fact that a local patron, Pieter van Ruijven,  purchased much of his output reduced the possibility of his fame spreading.  Vermeer never had any pupils; his relatively short life, the demands of separate  careers, and his extraordinary precision as a painter all help to explain his  limited oeuvre
 Vermeer produced transparent colours by applying paint to the canvas in  loosely granular layers, a technique called pointillé (not to be confused with  pointillism). No drawings have been positively attributed to Vermeer, and his  paintings offer few clues to preparatory methods. David Hockney, among other  historians and advocates of the Hockney–Falco thesis, has speculated that  Vermeer used a camera obscura to achieve precise positioning in his  compositions, and this view seems to be supported by certain light and  perspective effects. The often-discussed sparkling pearly highlights in  Vermeer's paintings have been linked to this possible use of a camera obscura,  the primitive lens of which would produce halation. Exaggerated perspective can  be seen in Lady at the Virginals with a Gentleman (London, Royal Collection).  Vermeer's interest in optics is also attested in this work by the accurately  observed mirror reflection above the lady at the vir- ginals.
 However, the extent of Vermeer's dependence upon the camera obscura is  disputed by historians. Indeed, other than assumptions made by an analysis of  his style, there is no evidence, either scientific or historical, that Vermeer  ever owned or used such a device.
 There is no other seventeenth century artist who early in his career  employed, in the most lavish way, the exorbitantly expensive pigment lapis  lazuli, or natural ultramarine. Vermeer not only used this in elements that are  naturally of this colour; the earth colours umber and ochre should be understood  as warm light within a painting's strongly-lit interior, which reflects its  multiple colours onto the wall. In this way, he created a world more perfect  than any he had witnessed. This working method most probably was inspired by  Vermeer’s understanding of Leonardo’s observations that the surface of every  object partakes of the colour of the adjacent object.This means that no object  is ever seen entirely in its natural colour.
 A comparable but even more remarkable, yet effectual, use of natural  ultramarine is in The Girl with a Wineglass. The shadows of the red satin dress  are underpainted in natural ultramarine, and, owing to this underlying blue  paint layer, the red lake and vermilion mixture applied over it acquires a  slightly purple, cool and crisp appearance that is most powerful.
 Even after Vermeer’s supposed financial breakdown following the so-called  rampjaar (year of disaster) in 1672, he continued to employ natural ultramarine  generously, such as in Lady Seated at a Virginal. This could suggest that  Vermeer was supplied with materials by a collector, and would coincide with John  Michael Montias’ theory of Pieter van Ruijven being Vermeer’s patron.
 Vermeer painted mostly domestic interior scenes. His works are largely  genre pieces and portraits, with the exception of two cityscapes and two  allegories. His subjects offer a cross-section of seventeenth century Dutch  society, ranging from the portrayal of a simple milkmaid at work, to the luxury  and splendour of rich notables and merchantmen in their roomy houses. Besides  these subjects, religious, poetical, musical, and scientific comments can also  be found in his work.
 Only three paintings are dated: The Procuress (1656, Dresden,  Gemäldegalerie), The Astronomer (1668, Paris, Louvre), and The Geographer (1669,  Frankfurt, Städelsches Kunstinstitut). Two pictures are generally accepted as  earlier than The Procuress; both are history paintings, painted in a warm  palette and in a relatively large format for Vermeer—Christ in the House of Mary  and Martha (Edinburgh, National Gallery) and Diana and her Companions (The  Hague, Mauritshuis).
 Vermeer's mother-in-law, Maria Thins, owned Dirck van Baburen's 1622  oil-on-canvas Procuress (or a copy of it), which appears in the background of  two of Vermeer's paintings. The same subject was also painted by Vermeer. After  his own The Procuress almost all of Vermeer's paintings are of contemporary  subjects in a smaller format, with a cooler palette dominated by blues, yellows  and greys. It is to this period that practically all of his surviving works  belong. They are usually domestic interiors with one or two figures lit by a  window on the left. They are characterized by a serene sense of compositional  balance and spatial order, unified by a pearly light. Mundane domestic or  recreational activities become thereby imbued with a poetic timelessness (e.g.  Woman Reading a Letter at an Open Window, Dresden, Gemäldegalerie). To this  period also have been allocated Vermeer's two townscapes, View of Delft (The  Hague, Mauritshuis) and A Street in Delft (Amsterdam, Rijksmuseum).
 A few of his paintings show a certain hardening of manner and these are  generally thought to represent his late works. From this period come The  Allegory of Faith (c 1670, New York, Metropolitan Museum) and The Letter (c  1670, Amsterdam, Rijksmuseum).
 Ultramarine is a blue pigment consisting primarily of a double silicate of  aluminium and sodium with some sulfides or sulfates, and occurring in nature as  a proximate component of lapis lazuli. In the past, it has also been known as  azzurrum ultramarine, azzurrum transmarinum, azzuro oltramarino, azur d'Acre,  pierre d'azur, Lazurstein. Current terminology for ultramarine include natural  ultramarine (English), outremer lapis (French), Ultramarin echt (German),  oltremare genuino (Italian), and ultramarino verdadero (Spanish). The pigment  color code is P. Blue 29 77007. Ultramarine is the most complex of the mineral  pigments, a complex sulfur-containing sodio-silicate (Na8-10Al6Si6O24S2-4),  essentially a mineralized limestone containing a blue cubic mineral called  lazurite (the major component in lapis lazuli). Some chloride is often present  in the crystal lattice as well. The blue color of the pigment is due to the S3−  radical anion, which contains an unpaired electron.
 The name derives from Middle Latin ultramarinus, literally "beyond the sea"  because it was imported from Asia by sea.
 The first recorded use of ultramarine as a color name in English was in  1598
 The first noted use of lapis lazuli as a pigment can be seen in the 6th-  and 7th-century AD cave paintings in Afghanistani Zoroastrian and Buddhist  temples, near the most famous source of the mineral. Lapis lazuli has also been  identified in Chinese paintings from the 10th and 11th centuries, in Indian  mural paintings from the 11th, 12th, and 17th centuries, and on Anglo-Saxon and  Norman illuminated manuscripts from c.1100. Natural ultramarine is the most  difficult pigment to grind by hand, and for all except the highest quality of  mineral sheer grinding and washing produces only a pale grayish blue powder. At  the beginning of the 13th century an improved method came into use, described by  the 15th century artist Cennino Cennini.
 This process consisted of mixing the ground material with melted wax,  resins, and oils, wrapping the resulting mass in a cloth, and then kneading it  in a dilute lye solution. The blue particles collect at the bottom of the pot,  while the impurities and colorless crystals remain in the mass. This process was  performed at least three times, with each successive extraction generating a  lower quality material. The final extraction, consisting largely of colorless  material as well as a few blue particles, brings forth ultramarine ash which is  prized as a glaze for its pale blue transparency.
 The pigment was most extensively used during the 14th through 15th  centuries, as its brilliance complemented the vermilion and gold of illuminated  manuscripts and Italian panel paintings. It was valued chiefly on account of its  brilliancy of tone and its inertness in opposition to sunlight, oil, and slaked  lime. It is, however, extremely susceptible to even minute and dilute mineral  acids and acid vapors. Dilute HCl, HNO3, and H2SO4 rapidly destroy the blue  color, producing hydrogen sulfide (H2S) in the process. Acetic acid attacks the  pigment at a much slower rate than mineral acids. Ultramarine was only used for  frescoes when it was applied "secco" because fresco's absorption rate made its  use cost prohibitive. The pigment was mixed with a binding medium like egg and  applied over dry plaster (such as Giotto di Bondone's frescos in the Cappella  degli Scrovegni or Arena Chapel in Padua).
 European artists used the pigment sparingly, reserving their highest  quality blues for the robes of Mary and the Christ child. As a result of the  high price, artists sometimes economized by using a cheaper blue, azurite, for  under painting. Most likely imported to Europe through Venice, the pigment was  seldom seen in German art or art from countries north of Italy. Due to a  shortage of azurite in the late 16th and 17th century the demand for the  already-expensive ultramarine increased dramatically. In 1814 Tassaert observed  the spontaneous formation of a blue compound, very similar to ultramarine, if  not identical with it, in a lime kiln at St. Gobain, which caused the Societé  pour l'Encouragement d'Industrie to offer, in 1824, a prize for the artificial  production of the precious color. Processes were devised by Jean Baptiste Guimet  (1826) and by Christian Gmelin (1828), then professor of chemistry in Tübingen;  but while Guimet kept his process a secret Gmelin published his, and thus became  the originator of the "artificial ultramarine" industry.
 The raw materials used in the manufacture are:  iron-free kaolin, or some  other kind of pure clay, which should contain its silica and alumina as nearly  as possible in the proportion of SiO2:Al2O3 demanded by the formula assigned to  ideal kaolin (a deficit of silica, however, it appears can be made up for by  addition of the calculated weight of finely divided silica);  anhydrous Na2SO4;   anhydrous Na2CO3;  powdered sulfur; and  powdered charcoal or relatively  ash-free coal, or colophony in lumps.
 The materials are 'baked' together in a kiln, usually in brick sized  amounts. The resultant solids are then ground and washed as per any other  insoluble pigment manufacturing process. The chemical reaction produces large  amounts of sulfur dioxide meaning that Flue gas desulfurization is an essential  part of its manufacture to comply with pollution regulations. Large chimneys  were used to disperse sulfur dioxide produced in the process, resulting in  ultramarine tinting the surrounding ground surfaces and roof vents with a blue  color. (Google Maps offers views of two such synthetic ultramarine manufacturing  sites, one near Hull, England (now defunct) and another in Comines,  France.)
 "Ultramarine poor in silica" is obtained by fusing a mixture of soft clay,  sodium sulfate, charcoal, sodium carbonate and sulfur. The product is at first  white, but soon turns green ("green ultramarine") when it is mixed with sulfur  and heated. The sulfur burns, and a fine blue pigment is obtained. "Ultramarine  rich in silica" is generally obtained by heating a mixture of pure clay, very  fine white sand, sulfur and charcoal in a muffle-furnace. A blue product is  obtained at once, but a red tinge often results. The different  ultramarines—green, blue, red and violet—are finely ground and washed with  water.
 Synthetic ultramarine is a more vivid blue than natural ultramarine, since  the particles in synthetic ultramarine are smaller and more uniform than natural  ultramarine and therefore diffuse light more evenly. Synthetic ultramarine is  also not as permanent as natural ultramarine.
 Artificial, like natural, ultramarine has a magnificent blue color, which  is not affected by light nor by contact with oil or lime as used in painting.  Hydrochloric acid immediately bleaches it with liberation of hydrogen sulfide.  It is remarkable that even a small addition of zinc-white (oxide of zinc) to the  reddish varieties especially causes a considerable diminution in the intensity  of the color, while dilution with artificial precipitated sulfate of lime  ("annalin") or sulfate of baryta ("blanc fix") acts pretty much as one would  expect. Synthetic ultramarine being very cheap, it is largely used for wall  painting, the printing of paperhangings and calico, etc., and also as a  corrective for the yellowish tinge often present in things meant to be white,  such as linen, paper, etc. Bluing or "Laundry blue" is a solution of synthetic  ultramarine (sometimes, prussian blue) that is used for this purpose when  washing white clothes. Large quantities are used in the manufacture of paper,  and especially for producing a kind of pale blue writing paper which is popular  in Britain.
 Ultramarine is based on the sodalite structure which is a 3 dimensional  aluminosilicate cage containing 3 sulfur atoms bonded together to form an ion.  These ions are charge balanced by cations of sodium in the natural material. The  sodium ions can be ion exchanged with lithium and potassium as described above.  The modification of the ions has a dramatic effect on the structure of the  cages. Lithium being smaller than sodium causes the cage to contract whilst  potassium being large causes the cage to expand. The modification of the cage  structure and the interaction of the different cations with the central sulfur  species modifies the colouration of the final pigment.
 By treating blue ultramarine with silver nitrate solution,  "silver-ultramarine" is obtained as a yellow powder. This compound gives a blue  potassium- and lithium-ultramarine when treated with the corresponding chloride,  and an ethyl-ultramarine when treated with ethyl iodide. Selenium- and  tellurium-ultramarine, in which these elements replace the sulfur, have also  been prepared.
 In general, very little is known about Vermeer and his works. This painting  is signed "IVMeer" but not dated. It is unclear whether this work was  commissioned, and if so, by whom. In any case, it is probably not meant as a  conventional portrait.
 More recent Vermeer literature points to the image being a 'tronie', the  Dutch 17th-century description of a ’head’ that was not meant to be a portrait.  After the most recent restoration of the painting in 1994 the subtle colour  scheme and the intimacy of the girl’s gaze on to the spectator have been greatly  enhanced.
 On the advice of Victor de Stuers, who for years tried to prevent Vermeer's  rare works from being sold to parties abroad, A.A. des Tombe purchased the work  at an auction in The Hague in 1881 for only two guilders and thirty cents. At  the time, its condition was very bad. Des Tombe had no heirs and donated this  and other paintings to the Mauritshuis in 1902.
 In 1937, a very similar painting, Smiling Girl, at the time also thought to  be by Vermeer, was donated by collector Andrew W. Mellon to the National Gallery  of Art in Washington, D.C. It is now widely considered to be a fake. Vermeer  expert Arthur Wheelock claimed in a 1995 study that it is by 20th-century artist  and forger Theo van Wijngaarden, a friend of Han van Meegeren
  
