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Buy Round Shape 12 mm Gems

(59)
Round Shape 12 mm Gems Weight Round Shape 12 mm Gems Size Round Shape 12 mm Gems Clarity Round Shape 12 mm Gems Price Round Shape 12 mm Gems Origin
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Photos are of Actual Products for Sale

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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6.87 ct Black Spinel, 11.8 mm Round Rose Cut From Thailand

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

6.87ct1 Piece
$ 22.67
11.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.87 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.8 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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14.99 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.99 carat weight Spinel

14.99ct (total)2 Pieces
$ 49.47
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.50 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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15.27 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 15.27 carat weight Spinel

15.27ct (total)2 Pieces
$ 50.39
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.64 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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14.65 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.65 carat weight Spinel

14.65ct (total)2 Pieces
$ 45.77
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.33 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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14.85 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.85 carat weight Spinel

14.85ct (total)2 Pieces
$ 49.01
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.43 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.47 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.47 carat weight Spinel

13.47ct (total)2 Pieces
$ 44.45
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.74 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.13 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.13 carat weight Spinel

13.13ct (total)2 Pieces
$ 41.02
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.57 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.2 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.20 carat weight Spinel

13.20ct (total)2 Pieces
$ 43.56
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.60 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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14.26 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.26 carat weight Spinel

14.26ct (total)2 Pieces
$ 44.55
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.13 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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15.03 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 15.03 carat weight Spinel

15.03ct (total)2 Pieces
$ 49.60
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.52 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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13.85 ct Black Spinel, 11.6 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.85 carat weight Spinel

13.85ct (total)2 Pieces
$ 45.71
11.6 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.93 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.6 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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14.6 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.60 carat weight Spinel

14.60ct (total)2 Pieces
$ 45.61
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.30 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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14.33 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.33 carat weight Spinel

14.33ct (total)2 Pieces
$ 44.77
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.17 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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14.02 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.02 carat weight Spinel

14.02ct (total)2 Pieces
$ 46.27
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.01 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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14.69 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.69 carat weight Spinel

14.69ct (total)2 Pieces
$ 48.48
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.35 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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14.62 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.62 carat weight Spinel

14.62ct (total)2 Pieces
$ 45.67
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.31 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.01 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.01 carat weight Spinel

13.01ct (total)2 Pieces
$ 40.65
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.51 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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13.84 ct Black Spinel, 11.8 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.84 carat weight Spinel

13.84ct (total)2 Pieces
$ 45.67
11.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.92 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.8 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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12.44 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 12.44 carat weight Spinel

12.44ct (total)2 Pieces
$ 38.86
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.22 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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11.99 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 11.99 carat weight Spinel

11.99ct (total)2 Pieces
$ 39.57
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.00 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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12.29 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 12.29 carat weight Spinel

12.29ct (total)2 Pieces
$ 38.39
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.15 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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12.72 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 12.72 carat weight Spinel

12.72ct (total)2 Pieces
$ 41.98
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.36 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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14.86 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.86 carat weight Spinel

14.86ct (total)2 Pieces
$ 49.04
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.43 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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15.39 ct Black Spinel, 12.2 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 15.39 carat weight Spinel

15.39ct (total)2 Pieces
$ 50.79
12.2 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.70 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12.2 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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14.91 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.91 carat weight Spinel

14.91ct (total)2 Pieces
$ 46.57
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.46 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.48 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.48 carat weight Spinel

13.48ct (total)2 Pieces
$ 44.48
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.74 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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14.1 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.10 carat weight Spinel

14.10ct (total)2 Pieces
$ 44.04
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.05 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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14.23 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.23 carat weight Spinel

14.23ct (total)2 Pieces
$ 46.96
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.12 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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7.27 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 1 pc | 7.27 carat weight Spinel

7.27ct1 Piece
$ 23.99
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.27 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: 1
Spinel Certificate: GemSelect
Product Description:
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14.65 ct Black Spinel, 11.8 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.65 carat weight Spinel

14.65ct (total)2 Pieces
$ 45.89
11.8 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.33 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.8 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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15.94 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 15.94 carat weight Spinel

15.94ct (total)2 Pieces
$ 52.60
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.97 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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13.38 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 13.38 carat weight Spinel

13.38ct (total)2 Pieces
$ 41.80
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.69 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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11.5 ct Black Spinel, 12 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 11.50 carat weight Spinel

11.50ct (total)2 Pieces
$ 35.93
12 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 5.75 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 12 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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14.84 ct Black Spinel, 11.9 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 2 pcs | 14.84 carat weight Spinel

14.84ct (total)2 Pieces
$ 48.97
11.9 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 7.42 ct Spinel
Spinel Shape: Round Rose-Cut Spinel
Spinel Size: 11.9 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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6.27 ct Black Spinel, 12.1 mm Round Rose Cut From Thailand

Natural Spinel, Qty: 1 pc | 6.27 carat weight Spinel

6.27ct1 Piece
$ 20.69
12.1 mm
Item Description
Stone Type: Loose Spinel
Spinel Weight: 6.27 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: 1
Spinel Certificate: GemSelect
Product Description:
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1 2
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Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Round shapes, facet cut and cabochon gems available now in 12 mm diameter size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often around 0.3 mm or slightly higher even. This small variance can usually be accommodated for standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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Overall Rating -> 10 star ratings

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