Ruby Jewelry Gemstones Rubies have a hardness of 9.0 on the Mohs scale of mineral hardness. Among the natural gems only moissanite and diam...

Obsidian jewelry Gemstones Obsidian Obsidian jewelry obsidian cocktail ring Gemstones Obsidian Obsidian gives a clear insight into problem...

Gemstones Agate Agate jewe lr y Agate brings stability to your life. Color: Agate comes in most colors. Agates range from transparent to o...