Buy Corundum Gemstones: Ruby, Sapphire, Star Ruby, Star Sapphire

Corundum itself is not a very rare mineral, but transparent gem-quality corundum is extremely rare. Most corundum is opaque to translucent and heavily included, suitable only for industrial use, including the production of abrasives used for sandpaper and machining of metal, plastics and wood, and as of recently, has become very important in the making of mobile phone components. The name 'corundum' comes from the Sanskrit word 'kuruvindam', meaning "ruby sapphire", which are the two distinct members of the corundum family.

Ruby is red corundum, while all other colors are referred to as sapphire. Blue sapphire and red ruby make up 2 of the 'four precious gems', which also includes green emerald and diamond. While there is no definitive distinction between red ruby and sapphire; in many cases, a near-red sapphire may be classed as an inferior color grade ruby. Thus, it is usually more common of practice to trade near-red sapphires as 'high-grade' fancy sapphire, rather than as 'low-grade' ruby. The corundum family includes variations of ruby and sapphire, including color change sapphire, star sapphire and star ruby. Ruby is also found in mixed gems such as ruby-zoisite and ruby-in-fuchsite.

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Gemstones A-Z

Buy Corundum Gemstones

2.24 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from India, Natural Untreated Gem, 7 x 6.9 mm

20.07 ct Oval Jasper, 29.2 x 18.5 mm From Indonesia

3.51 carat White Topaz, Round loose Topaz from Brazil, Natural Untreated Gem, 9.1 mm

41.53 ct Pencil Cut Obsidian, 43.3 x 10.6 mm From the United States

3.2 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 mm

0.65 carat Blue Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 4.5 x 4.4 mm

13.29 ct Yellow Quartz, 16 x 15.9 mm Octagon Concave Cut From Brazil

2.64 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.8 mm

2.42 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gem, 11.9 x 9.7 mm

1.54 ct Yellow Beryl, 8.9 x 8.7 mm Trillion Cut From Brazil

8.17 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 15.6 x 11.5 mm

7.47 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.2 x 7.9 mm

1.72 ct Loose Oval Concave Cut Mystic Quartz, 9.1 x 6.9 mm From Brazil

5.32 ct Purple Kunzite, 11.2 x 8.9 mm Oval Cut From Afghanistan

0.89 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gems, 6.9 x 4.9 mm

10.13 carat Swiss Blue Topaz, Carved Leaf loose Topaz from Brazil, Natural Gem, 16.8 x 12.4 mm

19.06 ct Oval Quartz With Hedenbergite, 20.6 x 12.8 mm From Russia

1.46 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 mm

0.87 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 5.2 x 5.2 mm

8.86 ct Oval Fire Agate, 13.9 x 11.5 mm From Mexico

1.87 carat Heart Checkerboard Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8 x 8 mm

46.66 ct Cushion Variscite, 38.2 x 23.8 mm From Australia

1.02 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

1.72 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Gem, 8.8 x 7 mm

18.09 ct Square Jasper, 18.6 x 16.6 mm From Indonesia

8.09 ct Oval Rutile Quartz, 15.1 x 11 mm From India

32.75 ct Baguette Jasper, 25.6 x 21.4 mm From Indonesia

29.14 carat Pear Jasper, loose Certified Jasper from Mexico, Natural Untreated Gem, 28.8 x 20.1 mm

12.46 ct Asscher Cut Rose Quartz, 14.7 x 14.4 mm From South Africa

2.1 carat Blue Tanzanite, Marquise Cut loose Tanzanite from Tanzania, Natural Gems, 7.1 x 3.6 mm

28.06 carat Black Tourmaline, Cushion loose Tourmaline from Mozambique, Natural Untreated Gem, 19.5 x 16.6 mm

14.32 ct Loose Oval Lapis Lazuli, 17.4 x 13 mm From Afghanistan

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