Rubis - Paire Jade Whitby Jet is renowned for

Whitby Jet is renowned for its deep and intense black color

Dureté : 7 - 7

Forme et taille : Freeforme cabochon

a city in Germany famous for gem cutting

Rubis - Paire Jade Whitby Jet is renowned forRuby is one of the four big gemstones along with diamond, emerald and sapphire. It belongs to the corundum family which also includes sapphires and fancy colored sapphires. All corundums have the same chemical composition and the same crystal system, however a tiny amount of "trace elements" is responsible for the color. Ruby owes its dark pink to bright red color to the presence of chromium (Cr). It is the absorption of light from these elements that