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Lodewyk van Bercken
Lodewyk van Bercken was a mid- to late-15th century Flemish jeweller and diamond cutter, renowned in the industry for inventing the scaif. The device revolutionized the diamond cutting industry and contributed to increased popularity of diamonds.
Van Bercken was born in Bruges.〔 He is credited with inventing the scaif, a polishing wheel infused with a mixture of olive oil and diamond dust. With the scaif, it became possible to polish all the facets of the diamond symmetrically at angles that best reflected the light.〔
==Charles the Bold==
Charles the Bold, Duke of Burgundy became the patron of van Berken and in the 1470s commissioned him to cut a 137 carat (27.4 g) stone that later became known as the Florentine Diamond. Van Bercken experimented with three diamonds belonging to Charles the Bold. One stone was the Beau Sancy, another became the property of Pope Sixtus V, and the third was given by Charles to Louis XI.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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