Ruby 4mm Faceted Round - 15-16 Inch Star Cut Coins Common Opals such as White

Common Opals such as White African Opal are believed to provide gentle

If you are a collector of cool rocks

Mica is heat-resistant and does not conduct electricity

and rutile

Mood Beads feature thermo-sensitive liquid crystals that react to your body heat and the environment

Ruby 4mm Faceted Round - 15-16 Inch Star Cut Coins Common Opals such as WhiteRuby 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