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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 Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple...

Ruby Zoisite occurs naturally when small Ruby crystals become embedded within Zoisite. The Ruby inclusions in this stone are pink to reddish purple...

Russian Amazonite is a translucent blue to green to green or light green stone, occurring with inclusions of white, black or yellow. It is named fo...

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,...

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

Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of ...

Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of ...

Sardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of ...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Selenite is a crystal formed from the mineral gypsum, which comes in many forms and color variations, but has been used historically to describe th...

Shattuckite is a rare copper silicate hydroxide mineral. It occurs in bright turquoise blues and darker blues as well as rust reds, commonly with i...

Shungite is a black, lustrous, non-crystalline mineraloid consisting of a high percentage of carbon. It was first found in a deposit near Shunga vi...

Sieber agate is not a true agate but rather a glassy, dark blue-grey or green copper slag that formed during ancient copper smelting in Germany, sp...

Silver Crazy Lace Agate is a naturally occurring form of Crazy Lace Agate, a banded Chalcedony that is predominantly white with layers of brown, gr...