Onyx, Black : Gemoptions Jewelry!, Christian Faith & Fashion Jewelry

Black Onyx Gemstone Information Information * Loose gemstones * Jewelry links Onyx has been linked to lovers by causing discord and cooling the fires of passion. It was thought that onyx carved with Mars, the God of war, gave Roman soldiers courage. It was also once believed that dark onyx caused bad dreams and sad thoughts.
ENHANCEMENT CODE D Click to view AGTA code. PROPERTIES Refractive Index 1.535-1.539 Hardness = 6.5-7 (Moh's Scale) Specific Gravity =2.60 Species - Chalcedony Optic Character - Aggregate. WARNINGS FOR CARE Ultrasonic: Safe Steamer: Safe Heat: Fair; color change may occur with heat Chemicals that harm: Hydrofluoric acid, nitric acid	Crystal Structure Crystal system: Hexagonal fibrous aggregates, micro crystalline quartz MAJOR SOURCES Brazil, Madagascar, Uruguay, US	Birthstones
		January	Garnet
		February	Amethyst
		March	Aquamarine
		April	Diamond
		May	Emerald
		June	Pearl/Alexandrite
		July	Ruby
		August	Peridot
		September	Sapphire
		October	Opal/Tourmaline
		November	Topaz or Citrine
		December	Blue Topaz or Zircon

Common Cut Examples.

Onyx, Black