Cassiterite: Buy Loose Cassiterite at Affordable Prices from GemSelect

Cassiterite is a tin oxide mineral, and is the primary ore for tin. In addition to its important industrial use, it has some interesting properties that make high quality crystals valuable as gemstones. Cassiterite is reasonably hard, with a rating on the Mohs scale of 6 to 7. It tends to be opaque though thin crystals can be translucent. Its chief virtue is its multiple crystal faces and outstanding luster. Many specimens are graded as having "adamantine" (diamond-like) or submetallic luster.

Cassiterite is one of the densest gem materials known. It also has a very high refractive index, higher than zircon, sphene and demantoid garnet.

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I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

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Gemstones A-Z

Buy Cassiterite Gems

0.47 ct Loose Yellow Sapphire, 3.2 x 3.2 mm Princess Cut From Tanzania

5.55 ct Trillion Black Opal, 13.3 x 14.2 mm From Ethiopia

4.45 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 12.1 x 6 mm

1.24 ct Marquise Cut Peridot, 7.9 x 4 mm From China

2.49 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 8.6 x 5.8 mm

3.53 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 12.2 x 10.1 mm

0.47 ct Blue Kyanite, 3.6 mm Round Cut From Nepal

1.04 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6 x 4 mm

38.92 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 35.7 x 23 mm

0.92 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 7.1 x 5.1 mm

25.3 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 25.9 x 17.6 mm

1 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 11.3 x 3.7 mm

1.22 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 8 x 6.2 mm

0.88 carat Green Sapphire, Oval loose Sapphire from Tanzania, Natural Gem, 6.1 x 5.1 mm

7.85 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.2 x 10.2 mm

5.76 ct Yellow Moonstone, 14.8 x 9.5 mm Oval Cut From India

1.41 ct Loose Trillion Concave Cut Mystic Quartz, 6.2 x 6 mm From Brazil

2.6 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.1 x 4.1 mm

5.73 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 12.2 x 10.1 mm

2.05 ct Oval Spectrolite, 10 x 8.3 mm From Finland

1.23 ct Yellow Beryl, 7.2 mm Round Cut From Brazil

0.89 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6.2 x 4.1 mm

12.63 carat Green Aventurine, Pear loose Aventurine from Brazil, Natural Untreated Gem, 24.2 x 14.7 mm

0.45 ct Loose Purple Sapphire, 5.7 x 3.8 mm Oval Cut From Tanzania

0.75 ct Oval Cut Color-Change Diaspore, 5.5 x 5.1 mm From Brazil

0.31 ct Baguette Cut Iolite, 5.1 x 3.1 mm From Madagascar

29.36 ct Cushion Fossil Coral, 19.7 x 12.4 mm From Indonesia

9.96 carat Pear Maw-Sit-Sit, loose Certified Maw-Sit-Sit from Myanmar, Natural Untreated Gem, 16.8 x 11 mm

6.6 ct Asscher Cut Rose Quartz, 9.2 x 9.1 mm From South Africa

2.41 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10 x 5.2 mm

1.28 carat Yellow Citrine, Cushion Buff Top loose Citrine from Brazil, Natural Untreated Gem, 8.2 x 6.1 mm

4.2 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.9 x 10 mm

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