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

Corundum Gemstones

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.

Gemstone Information

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Selected Gemstones

Gemstones A-Z

Buy Corundum Gemstones

5.3 ct Green Sapphire, 11.7 x 9.7 mm Heart Cut From Madagascar

2.25 ct Octagon Cut Sapphire, 5 x 3.1 mm From Tanzania

1.82 ct Trillion Cut Sapphire, 4.2 x 4.1 mm From Tanzania

0.46 ct Yellow Sapphire, 4.5 x 4.5 mm Heart Cut From Tanzania

1.31 ct Round Cut Ruby, 6.1 mm From Myanmar

3.19 ct Orange Sapphire, 5.8 x 4.9 mm Oval Cut From Tanzania

0.33 ct Yellow Sapphire, 5.1 x 2.5 mm Marquise Cut From Tanzania

3.27 ct Princess Cut Sapphire, 2.9 x 2.9 mm From Madagascar

0.59 ct Orange Sapphire, 4.8 mm Round Cut From Tanzania

1.22 ct Oval Cut Ruby, 7 x 5.2 mm From Madagascar

0.69 ct Blue Sapphire, 5.4 mm Diamond Cut From Madagascar

3.47 ct Blue Sapphire, 2.9 x 2.9 mm Princess Cut From Madagascar

1.68 ct White Sapphire, 4.5 mm Diamond Cut From Madagascar

0.5 ct Yellow Sapphire, 3.4 x 3.4 mm Princess Cut From Tanzania

0.8 ct Pink Sapphire, 5.9 x 3.9 mm Oval Cut From Madagascar

0.76 ct Yellow Sapphire, 5.2 mm Round Cut From Tanzania

0.48 ct Violet Sapphire, 6 x 3.8 mm Pear Cut From Tanzania

1.49 ct Heart Cut Sapphire, 4.1 x 4 mm From Sri Lanka

2.07 ct Purple Sapphire, 4.1 x 3.1 mm Oval Cut From Tanzania

0.78 ct White Sapphire, 4.6 mm Diamond Cut From Madagascar

2.1 ct Orange Sapphire, 4.6 x 3.7 mm Oval Cut From Tanzania

3.06 ct Octagon Cut Sapphire, 4.1 x 2.8 mm From Tanzania

0.46 ct Purple Sapphire, 5.3 x 4.1 mm Oval Cabochon From Tanzania

1.72 ct White Sapphire, 4.5 mm Diamond Cut From Madagascar

0.37 ct Orange Sapphire, 5.2 x 4.1 mm Pear Cut From Tanzania

0.9 ct Purple Sapphire, 5.1 x 4.2 mm Oval Cut From Madagascar

0.57 ct Violet Sapphire, 6 x 4.2 mm Oval Cut From Tanzania

0.8 ct Yellow Sapphire, 6 x 4.1 mm Oval Cut From Tanzania

0.98 ct Round Cut Ruby, 5.4 mm From Myanmar

0.36 ct Orange Sapphire, 5.2 x 4 mm Pear Cut From Tanzania

5.09 ct Pink Sapphire, 5.1 x 3.1 mm Pear Cut From Madagascar

1.85 ct Purple Sapphire, 4.1 x 3.1 mm Octagon Cut From Tanzania

Corundum Gemstones

Gemstone Information