Details: ±0.40ct (J SI1) Old Mine Cut Diamond, Platinum Ring.
Dispatches from a small business in Amsterdam, The Netherlands.
Size: 17.32 NL / 54.4 FR / 7 US / N½ UK, sizeable (Within reason. Contact seller for information).
Dimensions: H 0.5 x L 0.5 x W 0.5 cm.
Weight in grams: 2,5.
Condition: Excellent condition – barely used with minimal signs of wear.
At the start of the 1940s the jewelry arts were interrupted by the onset of World War II. Precious metals, especially platinum, were rare and in some instances forbidden to be sold. Palladium was substituted for the platinum being used in the war effort. In order to eek the most out of the available gold, a low karat gold alloy was used with a higher copper percentage. This resulted in gold with a subtle but distinctive reddish tinge, indeed through the cunning use of alloys, gold appeared in multiple colors within a single piece. Gold was manipulated in various ways; woven, braided and coiled. Resilla, cannetille and lacy filigree patterns reappeared in jewelry. Various textures were juxtaposed within a design putting matte finish next to bright to accentuate the design. Gold became the quintessential jewelry metal of the 1940s and 50s.
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.
The element platinum derives its name from the Spanish Platina del Pinto which translates to 'little silver from the Pinto' (said to be a river near Popayan, Columbia in which alluvial platinum was first found by the Spanish Conquistadors). Its white metallic luster leaves little doubt as to why the Spanish chose the name.
Platinum belongs to a group of elements, fittingly called the platinum group of metals. Apart from platinum the group comprises Osmium, Iridium, Palladium, Rhodium and Ruthenium. Platinum is often found as natural alloys containing one or more of these other elements and it wasn't until 1804 that all but one of the elements were isolated and named.
Platinum is malleable, ductile and very strong. In addition, it does not tarnish and it doesn't corrode making it a highly prized metal and extremely suitable for the manufacture of fine jewelry.