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Buy Corundum Gemstones

(7255)
Corundum Gemstones Weight Corundum Gemstones Size Corundum Gemstones Clarity Corundum Gemstones Price Corundum Gemstones Origin
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2.93 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Madagascar

Natural Star Sapphire, Qty: 2 pcs | 2.93 carat weight Star Sapphire

2.93ct (total)2 Pieces
$ 96.69
7 x 5.2 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 1.47 ct Star Sapphire
Star Sapphire Shape: Oval Cabochon Star Sapphire
Star Sapphire Size: 7 x 5.2 mm Star Sapphire
Star Sapphire Color: Navy Blue Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Origin: Madagascar Star Sapphire
Star Sapphire Treatment: Diffused
Star Sapphire Quantity: 2
Star Sapphire Certificate: GemSelect
Product Description:
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0.89 ct Loose Multicolor Sapphire, 6.4 x 4.5 mm Cushion Cut From Madagascar

Natural Sapphire, Qty: 1 pc | 0.89 carat weight Sapphire

0.89ct1 Piece
$ 142.40
6.4 x 4.5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.89 ct Sapphire
Sapphire Shape: Cushion-Cut Sapphire
Sapphire Size: 6.4 x 4.5 mm Sapphire
Sapphire Color: Teal Sapphire
Sapphire Clarity: VVS Sapphire
Sapphire Origin: Madagascar Sapphire
Sapphire Treatment: Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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0.89 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gem, 6.9 x 5.1 mm

Natural Sapphire, Qty: 1 pc | 0.89 carat weight Sapphire

0.89ct1 Piece
$ 207.33
6.9 x 5.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.89 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 6.9 x 5.1 mm Sapphire
Sapphire Color: Medium Navy Blue Sapphire
Sapphire Clarity: VVS Sapphire
Sapphire Origin: Sri Lanka Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 1
Sapphire Certificate: GemSelect
Product Description:
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4.46ct1 Piece
$ 14,718.00
11.1 x 8.7 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 4.46 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 11.1 x 8.7 mm Sapphire
Sapphire Color: Royal 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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0.79ct1 Piece
$ 472.14
5.5 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.79 ct Sapphire
Sapphire Shape: Diamond-Cut Sapphire
Sapphire Size: 5.5 mm Sapphire
Sapphire Color: Dark 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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3.8 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gem, 9.2 x 7.7 mm

Natural Sapphire, Qty: 1 pc | 3.80 carat weight Sapphire

3.80ct1 Piece
$ 7,600.00
9.2 x 7.7 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 3.80 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 9.2 x 7.7 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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2.36ct1 Piece
$ 11,178.15
10.9 x 6.7 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 2.36 ct Ruby
Ruby Shape: Pear Facet Ruby
Ruby Size: 10.9 x 6.7 mm Ruby
Ruby Color: Raspberry Red Ruby
Ruby Clarity: VS-SI Ruby
Ruby Origin: Mozambique Ruby
Ruby Treatment: Untreated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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33.79 ct Oval Star Ruby, 20.2 x 17.1 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 33.79 carat weight Star Ruby

33.79ct1 Piece
$ 446.03
20.2 x 17.1 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 33.79 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 20.2 x 17.1 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: Fracture Filled
Star Ruby Quantity: 1
Star Ruby Certificate: GemSelect
Product Description:
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1.26ct1 Piece
$ 928.65
7.2 x 5.2 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.26 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 7.2 x 5.2 mm Ruby
Ruby Color: Jam 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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46.86ct1 Piece
$ 993.90
29 x 28.9 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 46.86 ct Ruby
Ruby Shape: Carved Octagon Ruby
Ruby Size: 29 x 28.9 mm Ruby
Ruby Color: Medium Purple Magenta Ruby
Ruby Clarity: Opaque Ruby
Ruby Origin: Madagascar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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8.96 ct Blue Star Sapphire, 9.3 mm Round Cut From Thailand

Natural Star Sapphire, Qty: 2 pcs | 8.96 carat weight Star Sapphire

8.96ct (total)2 Pieces
$ 187.26
9.3 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 4.48 ct Star Sapphire
Star Sapphire Shape: Round Cabochon Star Sapphire
Star Sapphire Size: 9.3 mm Star Sapphire
Star Sapphire Color: 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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0.92ct1 Piece
$ 202.40
8.8 x 4.4 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.92 ct Sapphire
Sapphire Shape: Marquise Facet Sapphire
Sapphire Size: 8.8 x 4.4 mm Sapphire
Sapphire Color: Navy 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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23.05 ct Oval Star Ruby, 18.5 x 15.6 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 23.05 carat weight Star Ruby

23.05ct1 Piece
$ 304.26
18.5 x 15.6 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 23.05 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 18.5 x 15.6 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: Heated
Star Ruby Quantity: 1
Star Ruby Certificate: GemSelect
Product Description:
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1.15ct1 Piece
$ 988.37
6.7 x 6.1 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.15 ct Ruby
Ruby Shape: Pear Facet Ruby
Ruby Size: 6.7 x 6.1 mm Ruby
Ruby Color: Dark 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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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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0.67ct1 Piece
$ 400.42
5.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.67 ct Sapphire
Sapphire Shape: Diamond-Cut Sapphire
Sapphire Size: 5.1 mm Sapphire
Sapphire Color: Twilight 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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1.22ct1 Piece
$ 1,048.53
7.1 x 5.2 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.22 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 7.1 x 5.2 mm Ruby
Ruby Color: Medium-Dark 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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5.31 ct Loose Oval Cut Sapphire, 6 x 4.1 mm From Tanzania

Natural Sapphire, Qty: 8 pcs | 5.31 carat weight Sapphire

5.31ct (total)8 Pieces
$ 424.80
6 x 4.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.66 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 6 x 4.1 mm Sapphire
Sapphire Color: Multicolor Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 8
Sapphire Certificate: GemSelect
Product Description:
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4.38ct1 Piece
$ 11,563.20
11.5 x 8.9 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 4.38 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 11.5 x 8.9 mm Sapphire
Sapphire Color: Intense 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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41.80ct1 Piece
$ 975.24
32.8 x 32.5 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 41.80 ct Ruby
Ruby Shape: Carved Flower Ruby
Ruby Size: 32.8 x 32.5 mm Ruby
Ruby Color: Boysenberry Purple Ruby
Ruby Clarity: Opaque Ruby
Ruby Origin: Madagascar Ruby
Ruby Treatment: Heated
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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4.44ct1 Piece
$ 2,215.00
10.7 x 7.4 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 4.44 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 10.7 x 7.4 mm Sapphire
Sapphire Color: Warm Green 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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1.14ct1 Piece
$ 393.38
6.3 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 1.14 ct Ruby
Ruby Shape: Round Facet Ruby
Ruby Size: 6.3 mm Ruby
Ruby Color: Medium 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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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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44.29 ct Carved Ruby-Zoisite, 29.2 x 21.3 mm From Tanzania

Natural Ruby-Zoisite, Qty: 1 pc | 44.29 carat weight Ruby-Zoisite

44.29ct1 Piece
$ 52.71
29.2 x 21.3 mm
Item Description
Stone Type: Loose Ruby-Zoisite
Ruby-Zoisite Weight: 44.29 ct Ruby-Zoisite
Ruby-Zoisite Shape: Carved Rose Ruby-Zoisite
Ruby-Zoisite Size: 29.2 x 21.3 mm Ruby-Zoisite
Ruby-Zoisite Color: Multicolor Ruby-Zoisite
Ruby-Zoisite Clarity: Opaque Ruby-Zoisite
Ruby-Zoisite Origin: Tanzania Ruby-Zoisite
Ruby-Zoisite Treatment: Untreated
Ruby-Zoisite Quantity: 1
Ruby-Zoisite Certificate: GemSelect
Product Description:
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0.71 ct Loose Violet Sapphire, 6.5 x 4.4 mm Oval Cut From Madagascar

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

0.71ct1 Piece
$ 234.30
6.5 x 4.4 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.71 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 6.5 x 4.4 mm Sapphire
Sapphire Color: Deep 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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Select pcs
$ 40.65
5.1 x 3.2 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.43 ct Sapphire
Sapphire Shape: Octagon Step Cut Sapphire
Sapphire Size: 5.1 x 3.2 mm Sapphire
Sapphire Color: Deep Orange-Gold 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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0.54ct1 Piece
$ 178.20
6.1 x 4 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.54 ct Sapphire
Sapphire Shape: Pear Facet Sapphire
Sapphire Size: 6.1 x 4 mm Sapphire
Sapphire Color: Intense Pink 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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2.15 ct Blue Star Sapphire, 7.1 mm Round Cut From Thailand

Natural Star Sapphire, Qty: 1 pc | 2.15 carat weight Star Sapphire

2.15ct1 Piece
$ 47.30
7.1 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 2.15 ct Star Sapphire
Star Sapphire Shape: Round Cabochon Star Sapphire
Star Sapphire Size: 7.1 mm Star Sapphire
Star Sapphire Color: Dark Blue Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Origin: Thailand Star Sapphire
Star Sapphire Treatment: Diffused
Star Sapphire Quantity: 1
Star Sapphire Certificate: GemSelect
Product Description:
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0.78 ct Loose Yellow Sapphire, 3.6 x 3.6 mm Princess Cut From Tanzania

Natural Sapphire, Qty: 2 pcs | 0.78 carat weight Sapphire

0.78ct (total)2 Pieces
$ 40.38
3.6 x 3.6 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.39 ct Sapphire
Sapphire Shape: Princess-Cut Sapphire
Sapphire Size: 3.6 x 3.6 mm Sapphire
Sapphire Color: Light Golden-Yellow Sapphire
Sapphire Clarity: VVS-VS Sapphire
Sapphire Origin: Tanzania Sapphire
Sapphire Treatment: Be Heated
Sapphire Quantity: 2
Sapphire Certificate: GemSelect
Product Description:
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23.35ct1 Piece
$ 898.98
18.1 x 15.5 mm
Item Description
Stone Type: Loose Ruby
Ruby Weight: 23.35 ct Ruby
Ruby Shape: Oval Facet Ruby
Ruby Size: 18.1 x 15.5 mm Ruby
Ruby Color: Dark Red Ruby
Ruby Clarity: VVS-VS Ruby
Ruby Origin: Mozambique Ruby
Ruby Treatment: Fracture Filled
Ruby Quantity: 1
Ruby Certificate: GemSelect
Product Description:
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0.27 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gems, 4.9 x 3.1 mm

Natural Sapphire, Qty: 14 pcs | 0.27 carat weight Sapphire

Select pcs
$ 35.44
4.9 x 3.1 mm
Item Description
Stone Type: Loose Sapphire
Sapphire Weight: 0.27 ct Sapphire
Sapphire Shape: Oval Facet Sapphire
Sapphire Size: 4.9 x 3.1 mm Sapphire
Sapphire Color: Pastel 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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83.59 ct Carved Ruby-Zoisite, 55.2 x 35.7 mm From Tanzania

Natural Ruby-Zoisite, Qty: 1 pc | 83.59 carat weight Ruby-Zoisite

83.59ct1 Piece
$ 236.56
55.2 x 35.7 mm
Item Description
Stone Type: Loose Ruby-Zoisite
Ruby-Zoisite Weight: 83.59 ct Ruby-Zoisite
Ruby-Zoisite Shape: Carved Bird Ruby-Zoisite
Ruby-Zoisite Size: 55.2 x 35.7 mm Ruby-Zoisite
Ruby-Zoisite Color: Multicolor Ruby-Zoisite
Ruby-Zoisite Clarity: Opaque Ruby-Zoisite
Ruby-Zoisite Origin: Tanzania Ruby-Zoisite
Ruby-Zoisite Treatment: Untreated
Ruby-Zoisite Quantity: 1
Ruby-Zoisite 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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35.51 ct Oval Star Ruby, 19.9 x 17.4 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 35.51 carat weight Star Ruby

35.51ct1 Piece
$ 468.73
19.9 x 17.4 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 35.51 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 19.9 x 17.4 mm Star Ruby
Star Ruby Color: Plum 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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35.88 ct Oval Star Ruby, 19.9 x 18.1 mm From Madagascar

Natural Star Ruby, Qty: 1 pc | 35.88 carat weight Star Ruby

35.88ct1 Piece
$ 592.02
19.9 x 18.1 mm
Item Description
Stone Type: Loose Star Ruby
Star Ruby Weight: 35.88 ct Star Ruby
Star Ruby Shape: Oval Cabochon Star Ruby
Star Ruby Size: 19.9 x 18.1 mm Star Ruby
Star Ruby Color: Magenta Pink 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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1.7 ct Blue Star Sapphire, 7.1 x 5.2 mm Oval Cut From Madagascar

Natural Star Sapphire, Qty: 1 pc | 1.70 carat weight Star Sapphire

1.70ct1 Piece
$ 56.10
7.1 x 5.2 mm
Item Description
Stone Type: Loose Star Sapphire
Star Sapphire Weight: 1.70 ct Star Sapphire
Star Sapphire Shape: Oval Cabochon Star Sapphire
Star Sapphire Size: 7.1 x 5.2 mm Star Sapphire
Star Sapphire Color: Navy Blue Star Sapphire
Star Sapphire Clarity: Opaque Star Sapphire
Star Sapphire Origin: Madagascar Star Sapphire
Star Sapphire Treatment: Diffused
Star Sapphire Quantity: 1
Star Sapphire 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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