Ruby (Sri Lanka) 3mm Faceted Round AA Grade - 15-16 Inch 3x4" as Obsidian can be formed

as Obsidian can be formed into a blade many times sharper than steel surgical blades

The stone can also include its namesake sage green

with inclusions of amazonite (causing the pale blue-green color) and tourmaline (the black spots)

resembling the mottled green and black pattern of a kiwi fruit

a cryptocrystalline Quartz

Ruby (Sri Lanka) 3mm Faceted Round AA Grade - 15-16 Inch 3x4" as Obsidian can be formedRuby is a precious gemstone known for its deep red color. It is a variety of the mineral corundum, the second hardest mineral next to diamond . The presence of chromium is what gives a ruby its red color. Trace amounts of iron can also affect the hue, giving some rubies a slightly brownish or purplish tint. Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. At times in ancient history, Ruby was valued more