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Buy Corundum Gemstones

(7276)
Corundum Gemstones Weight Corundum Gemstones Size Corundum Gemstones Clarity Corundum Gemstones Price Corundum Gemstones Origin
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4.81 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gem, 10.9 x 7.5 mm

Natural Sapphire, Qty: 1 pc | 4.81 carat weight Sapphire

4.81ct1 Piece
$ 12,698.40
10.9 x 7.5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 4.81 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 10.9 x 7.5 mm Sapphire
Sapphire Color: Cornflower Blue Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Sri Lanka Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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91.08ct1 Piece
$ 182.16
40.9 x 35.7 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 91.08 ct Sapphire
Sapphire Shape: Bird Carving Sapphire
Sapphire Size: 40.9 x 35.7 mm Sapphire
Sapphire Color: Black Green Sapphire
Sapphire Clarity: Opaque Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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0.89ct1 Piece
$ 452.10
5.7 x 5.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.89 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 5.7 x 5.1 mm Sapphire
Sapphire Color: Violet Purple Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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0.4 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4 mm

Natural Ruby, Qty: 1 pc | 0.40 carat weight Ruby

0.40ct1 Piece
$ 132.00
4 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 0.40 ct Ruby
Ruby Shape: Round Facet Ruby
Ruby Size: 4 mm Ruby
Ruby Color: Dark Red Ruby
Ruby Clarity: SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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2.7 ct Loose Pink Sapphire, 9.3 x 7.5 mm Oval Cut From Madagascar

Natural Sapphire, Qty: 1 pc | 2.70 carat weight Sapphire

2.70ct1 Piece
$ 6,750.00
9.3 x 7.5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 2.70 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 9.3 x 7.5 mm Sapphire
Sapphire Color: Intense Pink Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.12ct1 Piece
$ 825.46
6.6 x 5.5 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.12 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 6.6 x 5.5 mm Ruby
Ruby Color: Pinkish Red Ruby
Ruby Clarity: SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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Select pcs
$ 22.20
5.2 x 4.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.43 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 5.2 x 4.1 mm Sapphire
Sapphire Color: Fire Red Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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25.25 ct Oval Star Ruby, 17.9 x 14.8 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 25.25 carat weight Star Ruby

25.25ct1 Piece
$ 333.30
17.9 x 14.8 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 25.25 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 17.9 x 14.8 mm Star Ruby
Star Ruby Color: Deep Purple Star Ruby
Star Ruby Clarity: Opaque Star Ruby
Star Ruby Origin: Madagascar Star Ruby
Star Ruby Treatment: Fracture Filled
Star Ruby Quantity: 1
Star Ruby Certificate: GemSelect
Product Description:
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1.18ct1 Piece
$ 1,014.16
10.1 x 5.3 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.18 ct Ruby
Ruby Shape: Marquise Facet Ruby
Ruby Size: 10.1 x 5.3 mm Ruby
Ruby Color: Blood Red Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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1.98 ct Loose Princess Cut Sapphire, 2.4 x 2.3 mm From Tanzania

Natural Sapphire, Qty: 21 pcs | 1.98 carat weight Sapphire

1.98ct (total)21 Pieces
$ 237.60
2.4 x 2.3 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.09 ct Sapphire
Sapphire Shape: Princess-Cut Sapphire
Sapphire Size: 2.4 x 2.3 mm Sapphire
Sapphire Color: Multicolor Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 21
Sapphire Certificate: GemSelect
Product Description:
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6.87 ct Loose Orange Sapphire, 11.7 x 10.2 mm Oval Cut From Thailand

Natural Sapphire, Qty: 1 pc | 6.87 carat weight Sapphire

6.87ct1 Piece
$ 3,907.87
11.7 x 10.2 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 6.87 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 11.7 x 10.2 mm Sapphire
Sapphire Color: Amber Orange Sapphire
Sapphire Clarity: VS-SI Sapphire
Sapphire Origin: Thailand Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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15.51ct1 Piece
$ 1,240.80
15.7 x 13 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 15.51 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 15.7 x 13 mm Ruby
Ruby Color: Deep Red Ruby
Ruby Clarity: VVS-VS Ruby
Ruby Origin: Madagascar Ruby
Ruby Treatment: Fracture Filled
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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0.9 ct Loose Purple Sapphire, 6.6 x 4.7 mm Oval Cut From Madagascar

Natural Sapphire, Qty: 1 pc | 0.90 carat weight Sapphire

0.90ct1 Piece
$ 297.00
6.6 x 4.7 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.90 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 6.6 x 4.7 mm Sapphire
Sapphire Color: Deep Purple Sapphire
Sapphire Clarity: VVS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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31.68 ct Yellow Star Sapphire, 20.1 x 15.8 mm Oval Cut From Madagascar

Natural Star Sapphire, Qty: 1 pc | 31.68 carat weight Star Sapphire

31.68ct1 Piece
$ 313.63
20.1 x 15.8 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 31.68 ct Star Sapphire
Star Sapphire Shape: Oval Cabochon Star Sapphire
Star Sapphire Size: 20.1 x 15.8 mm Star Sapphire
Star Sapphire Color: Golden Yellow Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Origin: Madagascar Star Sapphire
Star Sapphire Treatment: Fracture Filled
Star Sapphire Quantity: 1
Star Sapphire Certificate: GemSelect
Product Description:
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1.29ct1 Piece
$ 950.76
7 x 5.1 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.29 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 7 x 5.1 mm Ruby
Ruby Color: Deep Reddish Pink Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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8.93 ct Blue Star Sapphire, 9.2 mm Round Cut From Thailand

Natural Star Sapphire, Qty: 2 pcs | 8.93 carat weight Star Sapphire

8.93ct (total)2 Pieces
$ 186.64
9.2 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 4.47 ct Star Sapphire
Star Sapphire Shape: Round Cabochon Star Sapphire
Star Sapphire Size: 9.2 mm Star Sapphire
Star Sapphire Color: Deep Navy Blue Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Origin: Thailand Star Sapphire
Star Sapphire Treatment: Diffused
Star Sapphire Quantity: 2
Star Sapphire Certificate: GemSelect
Product Description:
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0.73 ct Loose Orange Sapphire, 4.5 x 4.5 mm Cushion Cut From Tanzania

Natural Sapphire, Qty: 1 pc | 0.73 carat weight Sapphire

0.73ct1 Piece
$ 39.82
4.5 x 4.5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.73 ct Sapphire
Sapphire Shape: Cushion-Cut Sapphire
Sapphire Size: 4.5 x 4.5 mm Sapphire
Sapphire Color: Honey Orange Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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4.01ct1 Piece
$ 7,331.48
10 x 8.7 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 4.01 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 10 x 8.7 mm Sapphire
Sapphire Color: Deep Violet Blue Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Sri Lanka Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.11 ct Loose Yellow Sapphire, 5.6 mm Round Cut From Tanzania

Natural Sapphire, Qty: 1 pc | 1.11 carat weight Sapphire

1.11ct1 Piece
$ 219.78
5.6 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 1.11 ct Sapphire
Sapphire Shape: Round Facet Sapphire
Sapphire Size: 5.6 mm Sapphire
Sapphire Color: Deep Golden Orange Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.50ct1 Piece
$ 1,005.03
6.8 x 6.5 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.50 ct Ruby
Ruby Shape: Cushion-Cut Ruby
Ruby Size: 6.8 x 6.5 mm Ruby
Ruby Color: Deep Red Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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0.86 ct Loose Purple Sapphire, 6.5 x 4.8 mm Oval Cut From Madagascar

Natural Sapphire, Qty: 1 pc | 0.86 carat weight Sapphire

0.86ct1 Piece
$ 283.80
6.5 x 4.8 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.86 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 6.5 x 4.8 mm Sapphire
Sapphire Color: Pinkish Purple Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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127.68 ct Oval Star Ruby, 28.2 x 25.8 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 127.68 carat weight Star Ruby

127.68ct1 Piece
$ 2,106.72
28.2 x 25.8 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 127.68 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 28.2 x 25.8 mm Star Ruby
Star Ruby Color: Reddish Purple Star Ruby
Star Ruby Clarity: Opaque Star Ruby
Star Ruby Origin: Madagascar Star Ruby
Star Ruby Treatment: Untreated
Star Ruby Quantity: 1
Star Ruby Certificate: GemSelect
Product Description:
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1.22ct1 Piece
$ 1,048.53
6.9 x 5.1 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.22 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 6.9 x 5.1 mm Ruby
Ruby Color: Medium Red Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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0.74ct1 Piece
$ 442.27
5.6 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.74 ct Sapphire
Sapphire Shape: Diamond-Cut Sapphire
Sapphire Size: 5.6 mm Sapphire
Sapphire Color: Twilight Blue Sapphire
Sapphire Clarity: VVS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.04 ct Loose Violet Sapphire, 6.7 x 5.1 mm Cushion Cut From Tanzania

Natural Sapphire, Qty: 1 pc | 1.04 carat weight Sapphire

1.04ct1 Piece
$ 500.59
6.7 x 5.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 1.04 ct Sapphire
Sapphire Shape: Cushion-Cut Sapphire
Sapphire Size: 6.7 x 5.1 mm Sapphire
Sapphire Color: Royal Violet Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Untreated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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0.56 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5 mm

Natural Sapphire, Qty: 1 pc | 0.56 carat weight Sapphire

0.56ct1 Piece
$ 378.75
5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.56 ct Sapphire
Sapphire Shape: Diamond-Cut Sapphire
Sapphire Size: 5 mm Sapphire
Sapphire Color: Dark Blue Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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0.74 ct Loose Pink Sapphire, 5.3 mm Round Cut From Madagascar

Natural Sapphire, Qty: 1 pc | 0.74 carat weight Sapphire

0.74ct1 Piece
$ 324.28
5.3 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.74 ct Sapphire
Sapphire Shape: Round Facet Sapphire
Sapphire Size: 5.3 mm Sapphire
Sapphire Color: Royal Purple Pink Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.38ct1 Piece
$ 124.20
5.7 x 5.3 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 1.38 ct Sapphire
Sapphire Shape: Cushion-Cut Sapphire
Sapphire Size: 5.7 x 5.3 mm Sapphire
Sapphire Color: Multicolor Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.41ct1 Piece
$ 1,039.20
6.7 x 5.6 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.41 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 6.7 x 5.6 mm Ruby
Ruby Color: Wine Red Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Myanmar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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1.31 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gems, 5.2 mm

Natural Sapphire, Qty: 2 pcs | 1.31 carat weight Sapphire

1.31ct (total)2 Pieces
$ 576.40
5.2 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.66 ct Sapphire
Sapphire Shape: Diamond-Cut Sapphire
Sapphire Size: 5.2 mm Sapphire
Sapphire Color: Dark Blue Sapphire
Sapphire Clarity: VS-SI Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 2
Sapphire Certificate: GemSelect
Product Description:
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0.71 ct Loose Orange Sapphire, 5.1 x 4.1 mm Octagon Cut From Tanzania

Natural Sapphire, Qty: 1 pc | 0.71 carat weight Sapphire

0.71ct1 Piece
$ 38.73
5.1 x 4.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.71 ct Sapphire
Sapphire Shape: Octagon / Scissor Cut Sapphire
Sapphire Size: 5.1 x 4.1 mm Sapphire
Sapphire Color: Bright Orange Sapphire
Sapphire Clarity: VVS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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7.97 ct Loose Princess Cut Sapphire, 2.9 x 2.8 mm From Tanzania

Natural Sapphire, Qty: 48 pcs | 7.97 carat weight Sapphire

7.97ct (total)48 Pieces
$ 597.75
2.9 x 2.8 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.17 ct Sapphire
Sapphire Shape: Princess-Cut Sapphire
Sapphire Size: 2.9 x 2.8 mm Sapphire
Sapphire Color: Multicolor Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 48
Sapphire Certificate: GemSelect
Product Description:
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1.06ct1 Piece
$ 561.24
8.2 x 5.6 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 1.06 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 8.2 x 5.6 mm Sapphire
Sapphire Color: Medium Purple Sapphire
Sapphire Clarity: VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Untreated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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1.32ct1 Piece
$ 132.00
7.1 x 5.2 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.32 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 7.1 x 5.2 mm Ruby
Ruby Color: Light Red Ruby
Ruby Clarity: VS Ruby
Ruby Origin: Madagascar Ruby
Ruby Treatment: Fracture Filled
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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17.99 ct Oval Star Ruby, 16.2 x 14.3 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 17.99 carat weight Star Ruby

17.99ct1 Piece
$ 237.47
16.2 x 14.3 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 17.99 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 16.2 x 14.3 mm Star Ruby
Star Ruby Color: Medium-Dark Purple Star Ruby
Star Ruby Clarity: Opaque Star Ruby
Star Ruby Origin: Madagascar Star Ruby
Star Ruby Treatment: Heated
Star Ruby Quantity: 1
Star Ruby Certificate: GemSelect
Product Description:
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1.11ct1 Piece
$ 61.05
7 x 5.1 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.11 ct Ruby
Ruby Shape: Pear Facet Ruby
Ruby Size: 7 x 5.1 mm Ruby
Ruby Color: Light Red Ruby
Ruby Clarity: VS Ruby
Ruby Origin: Madagascar Ruby
Ruby Treatment: Fracture Filled
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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1 2 3
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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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