Gem Stones

This round hematite cabochon features a gunmetal-gray metallic color that looks great with a variety of stones and metal types. Set it in a yellow-gold mounting for a high-contrast pendant or ring, or create a more monochromatic look with white gold or...

Stone size: 4.0mm Stone shape: Round Material: Iolite Stone type: Natural Color: Violet-blue Mohs hardness: 7–7.5 Refractive index: 1.53–1.55 Specific gravity: 2...

Stone size: 5.0mm Stone shape: Round Material: Iolite Stone type: Natural Color: Violet-blue Mohs hardness: 7–7.5 Refractive index: 1.53–1.55 Treatment: None...

Stone size: 6.0mm Stone shape: Round Material: Iolite Stone type: Natural Color: Violet-blue Mohs hardness: 7–7.5 Refractive index: 1.53–1.55 Treatment: None...

This round nephrite jade cabochon has an attractive olive-green color and subtle veining. Use the cabochon to create a bold pendant, pair it with complementary-color cabs to create matched sets with earrings or bracelets, or use it to create more complex...

This lab-created round ruby cabochon is made with corundum using the flame fusion method. Each stone has a chemical make-up identical to those found in nature. It performs at the bench just as a natural stone would. The color produced is a deep red that...

These glossy black rectangular crystals are lab-grown and are a great cost-effective way to get the look of the more expensive black gemstones like tourmaline obsidian or even synthetic CZs.

Stone size: 4.0mm Stone shape: Round Material: Spinel Stone type: Manmade Color: Blue Clarity: Eye-clean Mohs hardness: 8 Refractive index: 1.712–1.720 Specific...

Stone size: 5.0mm Stone shape: Round Material: Spinel Stone type: Manmade Color: Blue Clarity: Eye-clean Mohs hardness: 8 Refractive index: 1.712–1...

This lab-grown opal cabochon offers a multicolor presentation that's a beautiful and affordable alternative to genuine opal in a wide variety of jewelry designs. This material is created from very uniform nanoparticles of silica dioxide and...

This lab-grown opal cabochon offers a multicolor presentation that's a beautiful and affordable alternative to genuine opal in a wide variety of jewelry designs. This material is created from very uniform nanoparticles of silica dioxide and...