Silver Jewelry

Ruby in Zoisite

Ruby is a type of Corundum.
these are Rubies in a Zoisite matrix.

Corundum is the second hardest mineral and occurs as white, gray, dull blue or dull red crystals. However, a very small amount of corundum has a transparency, purity and color that make it suitable for use as a gemstone.

Some gem-quality corundum has trace amounts of chromium. A very small amount of chromium gives corundum a pink color and larger amounts produces stones that are deep red. Ruby is a deep red corundum. Transparent rubies are cut into faceted stones and translucent rubies are cut into cabochon-shaped gemstones.