16-Inch

Ruby 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...

Ruby 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...

Ruby 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...

Emerald is one of the four “precious” gemstones, the others being Diamond, Ruby and Sapphire. It is the green form of Beryl, colored by trace amoun...

Ruby has long been considered one of the most beautiful and valuable gemstones on the planet. It is also one of the hardest, second only to Diamond...

Emerald is one of the four “precious” gemstones, the others being Diamond, Ruby and Sapphire. It is the green form of Beryl, colored by trace amoun...

Emerald is one of the four “precious” gemstones, the others being Diamond, Ruby and Sapphire. It is the green form of Beryl, colored by trace amoun...

Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not onl...

Sapphires are precious gemstones, but unlike rubies, they come in a rainbow of colors besides red!  They are all varieties of the mineral corundum,...

Sapphires are precious gemstones, but unlike rubies, they come in a rainbow of colors besides red!  They are all varieties of the mineral corundum,...

This turquoise is mined from the Sonora mines in Mexico. Like all other natural turquoise, its coloring is the result of the chemical reaction that...

This turquoise is mined from the Sonora mines in Mexico. Like all other natural turquoise, its coloring is the result of the chemical reaction that...

This turquoise is mined from the Sonora mines in Mexico. Like all other natural turquoise, its coloring is the result of the chemical reaction that...

This turquoise is mined from the Sonora mines in Mexico. Like all other natural turquoise, its coloring is the result of the chemical reaction that...

This stone is a combination of two very similar materials: Azurite is a deep blue mineral produced by weathered copper ore deposits, and over time,...

Ametrine is quartz that occurs in bands of purple and yellow. As the name suggests, it is a combination of Amethyst and Citrine. The different colo...

Petrified Wood Agate is formed from the petrifaction process of primeval trees over the course of many years. Petrification occurs when the wood is...

Blue Chalcedony is a naturally occurring soft blue translucent stone. It is a member of the Quartz family, a form of silica with a cryptocrystallin...

Cacoxenite is the trade name for this naturally occurring blend of seven stone types. It was originally named for the visible inclusions of the min...

Amethyst is a beautiful purple stone, known as a “Gem of Fire” by ancient cultures. It has been greatly sought after throughout history and was at ...

Aquamarine is a transparent to translucent stone ranging from cerulean blue to light blue in higher grades. In lower grades it can be transparent t...

Green Tourmaline ranges in color from pale green to dark emerald to shades of olive and moss green. It is an aluminum borosilicate mixed with iron,...

Sapphires are precious gemstones, but unlike rubies, they come in a rainbow of colors besides red!  They are all varieties of the mineral corundum,...