Two Hummingbirds Crystal Carving Chrysocolla Zircon is a natural tetragonal

Zircon is a natural tetragonal crystal that forms in silicate melts

Gem quality Rose Quartz is rare and this strand is an exceptional example of gem material

Tullimonstrum gregarium

There is only a small area of the St

Two Hummingbirds Crystal Carving Chrysocolla Zircon is a natural tetragonalRuby is a rare gemstone variety of Corundum, the other famous variety being Sapphire. Corundum by itself is colorless, being made of only aluminum and oxygen, but Ruby is distinguished by its rich red color. This comes from small amounts of chromium replacing some of the aluminum. Amethyst is a variety of quartz which owes its coloration to the presence of iron in the area of its formation. The word Amethyst is derived from ancient Greek meaning