Details: ±0,20ct (H SI1) Old Mine Cut Diamonds, 18ct Ring, Birmingham 1908.
Dispatches from a small business in Amsterdam, The Netherlands.
Design Era: Edwardian (1901-1915).
Size: 17.12 NL / 53.8 FR / 6¾ US / N UK, sizeable (Within reason. Contact seller for information).
Dimensions: H 0.3 x L 1.3 x W 0.6 cm.
Weight in grams: 3.
Condition: Very good condition – slightly used with small signs of wear.
The Edwardian period (1901-1915) began with the death of Queen Victoria, when her son Edward became King. During this period, many of the Edwardian-designed pieces incorporated more expensive gems such as diamonds, emeralds, and rubies in elaborate designs.
Diamonds with this cut possess a squarish girdle with gently rounded corners. Old mine cut diamonds have a high crown, a small table, and a large, flat culet. They are similar to today's cushion cut. The old mine cut dates to the 1700s and was most prevalent during the Georgian and Victorian eras.
Because of the softness of pure (24k), it is usually alloyed with base metals for use in jewelry, altering its hardness and ductility, melting point, color and other properties. Alloys with lower carat rating, typically 22k, 18k, 14k or 9k, contain higher percentages of copper or other base metals or silver or palladium in the alloy. Copper is the most commonly used base metal, yielding a redder color.