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Buy Octagon Shape 18x13 mm Gems

(11)
Octagon Shape 18x13 mm Gems Weight Octagon Shape 18x13 mm Gems Size Octagon Shape 18x13 mm Gems Clarity Octagon Shape 18x13 mm Gems Price Octagon Shape 18x13 mm Gems Origin
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Photos are of Actual Products for Sale
13.52ct Loose Citrine | 13.52 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 18 x 13 mm, Photo A

13.52 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 18 x 13 mm

Natural Citrine, Qty: 1 pc | 13.52 carat weight Citrine

13.52ct1 Piece
$ 94.64
18 x 13 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 13.52 ct Citrine
Citrine Shape: Octagon Step Cut Citrine
Citrine Size: 18 x 13 mm Citrine
Citrine Color: Medium Golden Citrine
Citrine Clarity: VS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 1
Citrine Certificate: GemSelect
Product Description:
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20.43ct Loose Apatite | 20.43 ct Yellow Apatite, 17.5 x 13.2 mm Octagon Cut From Madagascar, Photo A
Click for Product Video (384010)

20.43 ct Yellow Apatite, 17.5 x 13.2 mm Octagon Cut From Madagascar

Natural Apatite, Qty: 1 pc | 20.43 carat weight Apatite

20.43ct1 Piece
$ 612.90
17.5 x 13.2 mm
Item Description
Stone Type: Loose Apatite
Apatite Weight: 20.43 ct Apatite
Apatite Shape: Octagon Facet Apatite
Apatite Size: 17.5 x 13.2 mm Apatite
Apatite Color: Yellow Brown Apatite
Apatite Clarity: VS-SI Apatite
Apatite Origin: Madagascar Apatite
Apatite Treatment: Untreated
Apatite Quantity: 1
Apatite Certificate: GemSelect
Product Description:
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15.19ct Loose Citrine | 15.19 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.9 x 12.9 mm, Photo A

15.19 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.9 x 12.9 mm

Natural Citrine, Qty: 1 pc | 15.19 carat weight Citrine

15.19ct1 Piece
$ 98.09
17.9 x 12.9 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 15.19 ct Citrine
Citrine Shape: Octagon Step Cut Citrine
Citrine Size: 17.9 x 12.9 mm Citrine
Citrine Color: Medium Gold Citrine
Citrine Clarity: VVS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 1
Citrine Certificate: GemSelect
Product Description:
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14.68ct Loose Citrine | 14.68 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.9 x 12.9 mm, Photo A
Click for Product Video (634969)

14.68 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.9 x 12.9 mm

Natural Citrine, Qty: 1 pc | 14.68 carat weight Citrine

14.68ct1 Piece
$ 102.76
17.9 x 12.9 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 14.68 ct Citrine
Citrine Shape: Octagon Step Cut Citrine
Citrine Size: 17.9 x 12.9 mm Citrine
Citrine Color: Golden-Yellow Citrine
Citrine Clarity: VVS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 1
Citrine Certificate: GemSelect
Product Description:
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15.67ct Loose Amethyst | 15.67 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 13.2 mm, Photo A

15.67 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 13.2 mm

Natural Amethyst, Qty: 1 pc | 15.67 carat weight Amethyst

15.67ct1 Piece
$ 109.69
18.3 x 13.2 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 15.67 ct Amethyst
Amethyst Shape: Octagon Step Cut Amethyst
Amethyst Size: 18.3 x 13.2 mm Amethyst
Amethyst Color: Purplish Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 1
Amethyst Certificate: GemSelect
Product Description:
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21.73ct Loose Kunzite | 21.73 ct Loose Pink Kunzite, 18.2 x 13.4 mm Octagon Cut From Afghanistan, Photo A

21.73 ct Loose Pink Kunzite, 18.2 x 13.4 mm Octagon Cut From Afghanistan

Natural Kunzite, Qty: 1 pc | 21.73 carat weight Kunzite

21.73ct1 Piece
$ 575.85
18.2 x 13.4 mm
Item Description
Stone Type: Loose Kunzite
Kunzite Weight: 21.73 ct Kunzite
Kunzite Shape: Octagon Step Cut Kunzite
Kunzite Size: 18.2 x 13.4 mm Kunzite
Kunzite Color: Very Light Pink Kunzite
Kunzite Clarity: VVS-VS Kunzite
Kunzite Origin: Afghanistan Kunzite
Kunzite Treatment: Untreated
Kunzite Quantity: 1
Kunzite Certificate: GemSelect
Product Description:
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15.58ct Loose Amethyst | 15.58 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 13.4 mm, Photo A

15.58 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 13.4 mm

Natural Amethyst, Qty: 1 pc | 15.58 carat weight Amethyst

15.58ct1 Piece
$ 109.06
18.2 x 13.4 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 15.58 ct Amethyst
Amethyst Shape: Octagon Step Cut Amethyst
Amethyst Size: 18.2 x 13.4 mm Amethyst
Amethyst Color: Medium Purplish Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 1
Amethyst Certificate: GemSelect
Product Description:
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15.55ct Loose Amethyst | 15.55 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 13.1 mm, Photo A

15.55 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 13.1 mm

Natural Amethyst, Qty: 1 pc | 15.55 carat weight Amethyst

15.55ct1 Piece
$ 108.85
18.2 x 13.1 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 15.55 ct Amethyst
Amethyst Shape: Octagon Step Cut Amethyst
Amethyst Size: 18.2 x 13.1 mm Amethyst
Amethyst Color: Purplish Violet Amethyst
Amethyst Clarity: VVS-VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 1
Amethyst Certificate: GemSelect
Product Description:
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14.44ct Loose Amethyst | 14.44 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.5 x 13.3 mm, Photo A

14.44 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.5 x 13.3 mm

Natural Amethyst, Qty: 1 pc | 14.44 carat weight Amethyst

14.44ct1 Piece
$ 101.08
18.5 x 13.3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 14.44 ct Amethyst
Amethyst Shape: Octagon Step Cut Amethyst
Amethyst Size: 18.5 x 13.3 mm Amethyst
Amethyst Color: Deep Purplish Violet Amethyst
Amethyst Clarity: VVS-VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 1
Amethyst Certificate: GemSelect
Product Description:
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11.88ct Loose Citrine | 11.88 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.8 x 12.9 mm, Photo A

11.88 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 17.8 x 12.9 mm

Natural Citrine, Qty: 1 pc | 11.88 carat weight Citrine

11.88ct1 Piece
$ 83.16
17.8 x 12.9 mm
Item Description
Stone Type: Loose Citrine
Citrine Weight: 11.88 ct Citrine
Citrine Shape: Octagon Step Cut Citrine
Citrine Size: 17.8 x 12.9 mm Citrine
Citrine Color: Medium Gold Citrine
Citrine Clarity: VVS Citrine
Citrine Origin: Brazil Citrine
Citrine Treatment: Untreated
Citrine Quantity: 1
Citrine Certificate: GemSelect
Product Description:
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15.66ct Loose Amethyst | 15.66 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 13.3 mm, Photo A

15.66 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 13.3 mm

Natural Amethyst, Qty: 1 pc | 15.66 carat weight Amethyst

15.66ct1 Piece
$ 109.62
18.3 x 13.3 mm
Item Description
Stone Type: Loose Amethyst
Amethyst Weight: 15.66 ct Amethyst
Amethyst Shape: Octagon Step Cut Amethyst
Amethyst Size: 18.3 x 13.3 mm Amethyst
Amethyst Color: Medium Purplish Violet Amethyst
Amethyst Clarity: VS Amethyst
Amethyst Origin: Brazil Amethyst
Amethyst Treatment: Untreated
Amethyst Quantity: 1
Amethyst Certificate: GemSelect
Product Description:
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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 Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 18 x 13 mm 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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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