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Whether fashioned or rough, all diamonds have the same chemical composition and internal crystal structure. GIA (082613)

Whether fashioned or rough, all diamonds have the same chemical composition and internal crystal structure. GIA (082613)

This almond-shaped stone is the largest apple-green diamond known. Its green color is attributed to the crystal’s close contact with a radioactive source at some point in its lifetime. The Dresden Green, which probably originated in a rough crystal of 100 carats or more, is unique among world-famous gems for not only its color, but also its elongated shape.

This almond-shaped stone is the largest apple-green diamond known. Its green color is attributed to the crystal’s close contact with a radioactive source at some point in its lifetime. The Dresden Green, which probably originated in a rough crystal of 100 carats or more, is unique among world-famous gems for not only its color, but also its elongated shape.

نتيجة بحث الصور عن ‪paraiba tourmaline‬‏

نتيجة بحث الصور عن ‪paraiba tourmaline‬‏

De Beers Millennium Star, a D-color, internally and externally flawless pear-shape, cut to perfect proportions, weighing a hefty 203.04 carats. It is the second largest faceted D-Flawless diamond in the world, the 273.15 carat Centenary Diamond is the first.

De Beers Millennium Star, a D-color, internally and externally flawless pear-shape, cut to perfect proportions, weighing a hefty 203.04 carats. It is the second largest faceted D-Flawless diamond in the world, the 273.15 carat Centenary Diamond is the first.

The Ocean Dream originated in Central Africa, and is currently owned by the Cora Diamond Corporation and was cut by Master Cutter Mazhar Saylam. Description from reenaahluwalia.com. I searched for this on bing.com/images

The Ocean Dream originated in Central Africa, and is currently owned by the Cora Diamond Corporation and was cut by Master Cutter Mazhar Saylam. Description from reenaahluwalia.com. I searched for this on bing.com/images

Topaz (old classic) ex Larry Krause - Murzinka Mine, Ekaterinburg, Middle Urals, Russia

Topaz (old classic) ex Larry Krause - Murzinka Mine, Ekaterinburg, Middle Urals, Russia

Topaz (old classic) ex Larry Krause - Murzinka Mine, Ekaterinburg, Middle Urals, Russia

Topaz (old classic) ex Larry Krause - Murzinka Mine, Ekaterinburg, Middle Urals, Russia

Mineral Specimens: Danburite with minor Calcite from Mina la Aurora, Charcas District, San Luis Potosi, Mexico

Mineral Specimens: Danburite with minor Calcite from Mina la Aurora, Charcas District, San Luis Potosi, Mexico

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