18th Century Jewelry

Absolutely stunning, excellent condition diamond brooch made in 18KT yelllow & white gold by Herbert Rosenthal. CENTER STONE: NATURAL DIAMONDS CARAT: 0.85CT CLARITY: VS COLOR: F CUT...

One of a kind Ring In Sparkling Subdued Colours Handmade in Belgium by Jewellery Artist Joke Quick, no casting or printing envolved, in 18K Yellow gold 5 g. & blackened sterling silver 1.1 g. (The stones are set on silver to create a black background for the stones). Pave set with : 4 X GHVS Rose-cut diamonds 0,40 ct., 5 X light pink rose-cut Unheated Pink Sapphires from Madagascar 0,60 ct., 6 X Demantoid Garnet from Madagascar 0,21 ct., 4 X unheated Blue brilliant-cut Sapphires from Madagascar 0.07 ct. 15 X Fancy Pink brilliant-cut diamonds 0,08 ct. Total carat diamonds: 0.48 carat. Total carat gemstones: 0.88 carat. 99% of natural sapphires in the market are heated in order to improve their colour. A small percentage of gemstones has naturally an extraordinary colour and therefore does not require any heat treatment. These gemstones are very rare. Demantoid Garnet is the rarest of all the garnet varieties, and is valued by collectors for its exceptional brilliance and fire. Demantoid was discovered in Russia in the early 19th century. In 1854, the noted mineralogist Nils Gustaf Nordenskiöld...