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Buy Untreated Gemstones

(959)
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Photos are of Actual Products for Sale

0.68 ct Purple Spinel, 5.1 mm Round Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.68 carat weight Spinel

0.68ct1 Piece
$ 34.00
5.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.68 ct Spinel
Spinel Shape: Round Facet Spinel
Spinel Size: 5.1 mm Spinel
Spinel Color: Deep Mauve Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.47 ct Pink Spinel, 7 x 6.1 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.47 carat weight Spinel

1.47ct1 Piece
$ 144.06
7 x 6.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.47 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 7 x 6.1 mm Spinel
Spinel Color: Hot Pink Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.61ct1 Piece
$ 159.08
9.3 x 6.3 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.61 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 9.3 x 6.3 mm Spinel
Spinel Color: Deep Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.56 ct Purple Spinel, 6.3 x 6.3 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.56 carat weight Spinel

1.56ct1 Piece
$ 112.42
6.3 x 6.3 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.56 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.3 x 6.3 mm Spinel
Spinel Color: Medium Purple Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.72 ct Purple Spinel, 5.1 mm Round Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.72 carat weight Spinel

0.72ct1 Piece
$ 36.58
5.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.72 ct Spinel
Spinel Shape: Round Facet Spinel
Spinel Size: 5.1 mm Spinel
Spinel Color: Medium Purple Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.59 ct Purple Spinel, 4.9 mm Round Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.59 carat weight Spinel

0.59ct1 Piece
$ 24.93
4.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.59 ct Spinel
Spinel Shape: Round Facet Spinel
Spinel Size: 4.9 mm Spinel
Spinel Color: Pinkish Violet Purple Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.54 ct Pink Spinel, 6.7 x 6.3 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.54 carat weight Spinel

1.54ct1 Piece
$ 118.58
6.7 x 6.3 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.54 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.7 x 6.3 mm Spinel
Spinel Color: Bubblegum Pink Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.08ct1 Piece
$ 121.57
8.2 x 5.5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.08 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 8.2 x 5.5 mm Spinel
Spinel Color: Grape Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.27 ct Purple Spinel, 6.6 x 5.5 mm Oval Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.27 carat weight Spinel

1.27ct1 Piece
$ 146.69
6.6 x 5.5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.27 ct Spinel
Spinel Shape: Oval Facet Spinel
Spinel Size: 6.6 x 5.5 mm Spinel
Spinel Color: Grape Purple Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.72 ct Purple Spinel, 6.7 x 6.6 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.72 carat weight Spinel

1.72ct1 Piece
$ 131.45
6.7 x 6.6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.72 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.7 x 6.6 mm Spinel
Spinel Color: Pinkish Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.06 ct Purple Spinel, 7.3 x 4.8 mm Oval Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.06 carat weight Spinel

1.06ct1 Piece
$ 122.43
7.3 x 4.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.06 ct Spinel
Spinel Shape: Oval Facet Spinel
Spinel Size: 7.3 x 4.8 mm Spinel
Spinel Color: Light Grape Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.63 ct Purple Spinel, 5.2 x 4.2 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.63 carat weight Spinel

0.63ct1 Piece
$ 44.10
5.2 x 4.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.63 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 5.2 x 4.2 mm Spinel
Spinel Color: Deep Magenta Spinel
Spinel Clarity: VVS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.58 ct Purple Spinel, 10.6 x 5.8 mm Marquise Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.58 carat weight Spinel

1.58ct1 Piece
$ 146.56
10.6 x 5.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.58 ct Spinel
Spinel Shape: Marquise Facet Spinel
Spinel Size: 10.6 x 5.8 mm Spinel
Spinel Color: Dark Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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6.6 ct Black Spinel, 9.2 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 6.60 carat weight Spinel

6.60ct (total)2 Pieces
$ 29.04
9.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 3.30 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 9.2 mm Spinel
Spinel Color: Black Spinel
Spinel Clarity: Opaque Spinel
Spinel Origin: Thailand Spinel
Spinel Treatment: Untreated
Spinel Quantity: 2
Spinel Certificate: GemSelect
Product Description:
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1.38 ct Purple Spinel, 6.8 x 6.1 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.38 carat weight Spinel

1.38ct1 Piece
$ 107.72
6.8 x 6.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.38 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.8 x 6.1 mm Spinel
Spinel Color: Light Reddish Purple Spinel
Spinel Clarity: VVS-VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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13.53 ct Black Spinel, 20.2 x 10.1 mm Baguette Rose Cut From Thailand

Natural Spinel, Qty: 1 pc | 13.53 carat weight Spinel

13.53ct1 Piece
$ 40.59
20.2 x 10.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 13.53 ct Spinel
Spinel Shape: Baguette Rose-Cut Spinel
Spinel Size: 20.2 x 10.1 mm Spinel
Spinel Color: Black Spinel
Spinel Clarity: Opaque Spinel
Spinel Origin: Thailand Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.26 ct Violet Spinel, 7.4 x 5.5 mm Oval Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.26 carat weight Spinel

1.26ct1 Piece
$ 142.16
7.4 x 5.5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.26 ct Spinel
Spinel Shape: Oval Facet Spinel
Spinel Size: 7.4 x 5.5 mm Spinel
Spinel Color: Medium Violet Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.5 ct Violet Spinel, 7.2 x 6 mm Oval Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.50 carat weight Spinel

1.50ct1 Piece
$ 115.50
7.2 x 6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.50 ct Spinel
Spinel Shape: Oval Facet Spinel
Spinel Size: 7.2 x 6 mm Spinel
Spinel Color: Medium Violet Spinel
Spinel Clarity: VVS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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15.82 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 15.82 carat weight Spinel

15.82ct (total)2 Pieces
$ 52.21
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.91 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12.1 mm Spinel
Spinel Color: Black Spinel
Spinel Clarity: Opaque Spinel
Spinel Origin: Thailand Spinel
Spinel Treatment: Untreated
Spinel Quantity: 2
Spinel Certificate: GemSelect
Product Description:
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1.5 ct Purple Spinel, 7.1 x 6 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.50 carat weight Spinel

1.50ct1 Piece
$ 139.43
7.1 x 6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.50 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 7.1 x 6 mm Spinel
Spinel Color: Medium Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.46 ct Purple Spinel, 6.8 x 6.4 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.46 carat weight Spinel

1.46ct1 Piece
$ 107.93
6.8 x 6.4 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.46 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.8 x 6.4 mm Spinel
Spinel Color: Very Light Pinkish Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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29.48 ct Black Spinel, 20 x 10.2 mm Baguette Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 29.48 carat weight Spinel

29.48ct (total)2 Pieces
$ 88.44
20 x 10.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 14.74 ct Spinel
Spinel Shape: Baguette Rose-Cut Spinel
Spinel Size: 20 x 10.2 mm Spinel
Spinel Color: Black Spinel
Spinel Clarity: Opaque Spinel
Spinel Origin: Thailand Spinel
Spinel Treatment: Untreated
Spinel Quantity: 2
Spinel Certificate: GemSelect
Product Description:
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1.06ct1 Piece
$ 104.94
8.9 x 5.4 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.06 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 8.9 x 5.4 mm Spinel
Spinel Color: Deep Purple Spinel
Spinel Clarity: VVS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.37 ct Purple Spinel, 6.4 x 5.6 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.37 carat weight Spinel

1.37ct1 Piece
$ 105.49
6.4 x 5.6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.37 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.4 x 5.6 mm Spinel
Spinel Color: Purple-Pink Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.68 ct Pink Spinel, 6.3 x 6 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.68 carat weight Spinel

1.68ct1 Piece
$ 110.88
6.3 x 6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.68 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.3 x 6 mm Spinel
Spinel Color: Very Light Pink Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.15ct1 Piece
$ 132.83
7.3 x 6.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.15 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 7.3 x 6.2 mm Spinel
Spinel Color: Dark Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.17 ct Pink Spinel, 7.3 x 5 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.17 carat weight Spinel

1.17ct1 Piece
$ 90.09
7.3 x 5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.17 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 7.3 x 5 mm Spinel
Spinel Color: Light Pink Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.73 ct Purple Spinel, 5 mm Round Cut From Tanzania

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

0.73ct1 Piece
$ 36.50
5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.73 ct Spinel
Spinel Shape: Round Facet Spinel
Spinel Size: 5 mm Spinel
Spinel Color: Light Grape Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.13 ct Purple Spinel, 6.5 x 5.5 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.13 carat weight Spinel

1.13ct1 Piece
$ 67.28
6.5 x 5.5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.13 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.5 x 5.5 mm Spinel
Spinel Color: Very Light Pinkish Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.55 ct Purple Spinel, 6.6 x 6.2 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.55 carat weight Spinel

1.55ct1 Piece
$ 110.83
6.6 x 6.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.55 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.6 x 6.2 mm Spinel
Spinel Color: Deep Mauve Tone Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.79 ct Purple Spinel, 5.5 x 4.5 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.79 carat weight Spinel

0.79ct1 Piece
$ 39.86
5.5 x 4.5 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.79 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 5.5 x 4.5 mm Spinel
Spinel Color: Grey Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.46 ct Purple Spinel, 6.3 x 6 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.46 carat weight Spinel

1.46ct1 Piece
$ 112.42
6.3 x 6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.46 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6.3 x 6 mm Spinel
Spinel Color: Medium-Dark Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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0.63 ct Purple Spinel, 6 x 4.4 mm Cushion Cut From Tanzania

Natural Spinel, Qty: 1 pc | 0.63 carat weight Spinel

0.63ct1 Piece
$ 44.10
6 x 4.4 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 0.63 ct Spinel
Spinel Shape: Cushion-Cut Spinel
Spinel Size: 6 x 4.4 mm Spinel
Spinel Color: Medium Dark-Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.05ct1 Piece
$ 108.60
7.4 x 5.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.05 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 7.4 x 5.8 mm Spinel
Spinel Color: Grayish Violet Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1.26 ct Purple Spinel, 7.7 x 5.7 mm Oval Cut From Tanzania

Natural Spinel, Qty: 1 pc | 1.26 carat weight Spinel

1.26ct1 Piece
$ 154.01
7.7 x 5.7 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.26 ct Spinel
Spinel Shape: Oval Facet Spinel
Spinel Size: 7.7 x 5.7 mm Spinel
Spinel Color: Medium Purple Spinel
Spinel Clarity: VS Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
View Details
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1.17ct1 Piece
$ 135.14
7.5 x 5.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 1.17 ct Spinel
Spinel Shape: Pear Facet Spinel
Spinel Size: 7.5 x 5.9 mm Spinel
Spinel Color: Deep Purple Spinel
Spinel Clarity: VS-SI Spinel
Spinel Origin: Tanzania Spinel
Spinel Treatment: Untreated
Spinel Quantity: 1
Spinel Certificate: GemSelect
Product Description:
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1 2 3
1 - 27
The idea of treating gemstones is nothing new. Nowadays, gem treatments are a way to supply the global demand for colored gemstones with a very limited 'natural' supply. Many gem types are always, or almost always, treated. The most common gem treatment is heat treatment, which is routinely applied to ruby and sapphire. Other gems such as emerald, tanzanite, blue zircon and blue topaz, are generally treated to produce their distinctive color; in fact it's virtually impossible to buy blue topaz that has not been irradiated. Even for the most expert gem buyers, determining whether a gemstone has been treated or enhanced is not always easy, and usually requires much more than just a jeweler's loupe.

Even with advanced gemological equipment, many treatments are still almost impossible to detect. So for many gem and jewelry buyers, one of the best ways to ensure the gem they're acquiring is completely natural and untreated, is through the selective buying of gemstone varieties that for the most part are never enhanced in any way. If you're searching for untreated gemstones, you may be surprised to discover we carry over 100 different untreated gem types.

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