Ruby Floral Spinner Ring
Riverdragon studio impressed abstract floral pattern fine silver ring shank with sterling silver half round spinner band adorned with a luminous smooth polished ruby cabochon.
Size 10 1/2 
Natural Ruby is one of four “precious” gemstones (including Diamond, Emerald and Sapphire) known for its rarity, monetary value, and hardness.  Ruby is red Corundum, an aluminum oxide mineral with chromium responsible for it's red color. The name comes from the Latin word rubeus, meaning “red,” and until 1800 when Ruby was recognized as a variety of Corundum, red Spinels, Tourmalines, and Garnets were also believed to be Ruby. All other color varieties of Corundum are designated as Sapphire.