Ruby Pink Purple Natural 6mm Faceted Round Banded - 15-16 InchRuby 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

had Red Jasper inlaid in its hilt

Biotite was named in honor of the French physicist Jean-Baptiste Biot

the result was glass permeated with thousands of tiny metallic sparkles

This variety of opal is named "dendritic" for the small inclusions within it that resemble moss or ferns

gold and brown

It is transparent or translucent

being found in metamorphic and pegmatitic rock

Jade has been used for tens of thousands of years

rendering its black especially deep and mysterious

the month the ancient Romans dedicated to Neptune

there may not be a beautiful blue-and-brown combination than that of Terra Agate

all-knowing eye