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Buy Octagon Shape 27 x 20 mm Gems

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Octagon Shape 27 x 20 mm Gems Weight Octagon Shape 27 x 20 mm Gems Size Octagon Shape 27 x 20 mm Gems Clarity Octagon Shape 27 x 20 mm Gems Price Octagon Shape 27 x 20 mm Gems Origin
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Octagon Shape 27 x 20 mm Gems Single
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1.09 ct Blue Kyanite, 6.9 x 4.9 mm Oval Cut From Nepal, Photo A

1.09 ct Blue Kyanite, 6.9 x 4.9 mm Oval Cut From Nepal

Kyanite

1.09ct1 pc
$ 23.98
6.9 x 4.9 mm
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2.99 ct Loose White Topaz, 4.6 x 4.6 mm Cushion Cut From Brazil, Photo A

2.99 ct Loose White Topaz, 4.6 x 4.6 mm Cushion Cut From Brazil

Topaz

2.99ct total6 pcs
$ 16.45
4.6 x 4.6 mm
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4.06 ct Yellow Citrine, 11 x 8.9 mm Octagon Cut From Brazil, Photo A

4.06 ct Yellow Citrine, 11 x 8.9 mm Octagon Cut From Brazil

Citrine

4.06ct1 pc
$ 31.26
11 x 8.9 mm
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1.41 ct Square Cut Rhodolite Garnet, 4.9 x 4.9 mm From Mozambique, Photo A

1.41 ct Square Cut Rhodolite Garnet, 4.9 x 4.9 mm From Mozambique

Rhodolite Garnet

1.41ct total2 pcs
$ 12.40
4.9 x 4.9 mm
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29.67 ct Cushion Coral, 24.9 x 18.9 mm From Mexico, Photo A

29.67 ct Cushion Coral, 24.9 x 18.9 mm From Mexico

Coral

29.67ct1 pc
$ 43.74
24.9 x 18.9 mm
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7.59 ct Loose Swiss Blue Topaz, 12.4 x 11.8 mm Carved From Brazil, Photo A

7.59 ct Loose Swiss Blue Topaz, 12.4 x 11.8 mm Carved From Brazil

Topaz

7.59ct1 pc
$ 50.09
12.4 x 11.8 mm
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8.93 ct Round Quartz Cat's Eye, 12.3 mm From India, Photo A

8.93 ct Round Quartz Cat's Eye, 12.3 mm From India

Quartz Cat's Eye

8.93ct1 pc
$ 31.82
12.3 mm
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5.13 ct Orange Moonstone, 10.1 mm Round Cut From India, Photo A

5.13 ct Orange Moonstone, 10.1 mm Round Cut From India

Moonstone

5.13ct1 pc
$ 10.31
10.1 mm
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3.02 ct Orange Sunstone, 7.1 x 5.1 mm Oval Cut From India, Photo A

3.02 ct Orange Sunstone, 7.1 x 5.1 mm Oval Cut From India

Sunstone

3.02ct total4 pcs
$ 17.37
7.1 x 5.1 mm
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0.53 ct Loose Yellow Sapphire, 4.8 x 3.9 mm Octagon Cut From Tanzania, Photo A

0.53 ct Loose Yellow Sapphire, 4.8 x 3.9 mm Octagon Cut From Tanzania

Sapphire

0.53ct1 pc
$ 28.91
4.8 x 3.9 mm
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2.38 ct Oval Cut Strawberry Quartz, 8.1 x 6.2 mm From Russia, Photo A

2.38 ct Oval Cut Strawberry Quartz, 8.1 x 6.2 mm From Russia

Strawberry Quartz

2.38ct total2 pcs
$ 14.80
8.1 x 6.2 mm
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18.92 ct Hexagon Cut Smoky Quartz, 16.1 x 14 mm From Brazil, Photo A

18.92 ct Hexagon Cut Smoky Quartz, 16.1 x 14 mm From Brazil

Smoky Quartz

18.92ct total2 pcs
$ 79.71
16.1 x 14 mm
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1.53 ct Loose Blue Tanzanite, 8 x 6.3 mm Oval Cut From Tanzania, Photo A

1.53 ct Loose Blue Tanzanite, 8 x 6.3 mm Oval Cut From Tanzania

Tanzanite

1.53ct1 pc
$ 13.30
8 x 6.3 mm
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4.48 ct Asscher Cut Rose Quartz, 9.9 x 9.9 mm From South Africa, Photo A

4.48 ct Asscher Cut Rose Quartz, 9.9 x 9.9 mm From South Africa

Rose Quartz

4.48ct1 pc
$ 24.64
9.9 x 9.9 mm
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22.42 ct Yellow Quartz, 25.6 x 18.4 mm Carved From Brazil, Photo A

22.42 ct Yellow Quartz, 25.6 x 18.4 mm Carved From Brazil

Quartz

22.42ct1 pc
$ 49.32
25.6 x 18.4 mm
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8.69 ct Yellow Quartz, 14.4 x 12.2 mm Odd Shaped From Brazil, Photo A

8.69 ct Yellow Quartz, 14.4 x 12.2 mm Odd Shaped From Brazil

Quartz

8.69ct1 pc
$ 33.65
14.4 x 12.2 mm
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1.35 ct Carved Ruby, 11.6 x 6.4 mm From Madagascar, Photo A

1.35 ct Carved Ruby, 11.6 x 6.4 mm From Madagascar

Ruby

1.35ct1 pc
$ 27.00
11.6 x 6.4 mm
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0.54 ct Loose Orange Sapphire, 5.8 x 4 mm Oval Cut From Tanzania, Photo A

0.54 ct Loose Orange Sapphire, 5.8 x 4 mm Oval Cut From Tanzania

Sapphire

0.54ct1 pc
$ 81.00
5.8 x 4 mm
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16.46 ct Carved Mother of Pearl, 27.1 x 18.4 mm From China, Photo A

16.46 ct Carved Mother of Pearl, 27.1 x 18.4 mm From China

Mother of Pearl

16.46ct1 pc
$ 54.32
27.1 x 18.4 mm
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3 ct Oval Cut Kornerupine, 7.1 x 5.1 mm From Sri Lanka, Photo A

3 ct Oval Cut Kornerupine, 7.1 x 5.1 mm From Sri Lanka

Kornerupine

3.00ct total4 pcs
$ 120.00
7.1 x 5.1 mm
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3.96 ct Loose Blue Sapphire, 2.6 x 2.5 mm Princess Cut From Sri Lanka, Photo A

3.96 ct Loose Blue Sapphire, 2.6 x 2.5 mm Princess Cut From Sri Lanka

Sapphire

3.96ct total30 pcs
$ 261.36
2.6 x 2.5 mm
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1.4 ct Orange Hessonite Garnet, 7.6 x 6 mm Oval Cut From Madagascar, Photo A

1.4 ct Orange Hessonite Garnet, 7.6 x 6 mm Oval Cut From Madagascar

Hessonite Garnet

1.40ct1 pc
$ 23.10
7.6 x 6 mm
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2.53 ct Baguette Labradorite, 8.2 x 6.2 mm From Madagascar, Photo A

2.53 ct Baguette Labradorite, 8.2 x 6.2 mm From Madagascar

Labradorite

2.53ct1 pc
$ 5.57
8.2 x 6.2 mm
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33.02 ct White Opal, 30 x 21.2 mm Pear Cut From Australia, Photo A
Click for Product Video (688673)

33.02 ct White Opal, 30 x 21.2 mm Pear Cut From Australia

Opal

33.02ct1 pc
$ 1,651.50
30 x 21.2 mm
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2.87 ct White Zircon, 7.3 x 5.2 mm Oval Cut From Cambodia, Photo A

2.87 ct White Zircon, 7.3 x 5.2 mm Oval Cut From Cambodia

Zircon

2.87ct total2 pcs
$ 28.29
7.3 x 5.2 mm
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2.5 ct Oval Checkerboard Labradorite, 7.1 x 6.1 mm From Madagascar, Photo A

2.5 ct Oval Checkerboard Labradorite, 7.1 x 6.1 mm From Madagascar

Labradorite

2.50ct total2 pcs
$ 5.00
7.1 x 6.1 mm
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2.36 ct White Moonstone, 9.9 x 8 mm Oval Cut From India, Photo A

2.36 ct White Moonstone, 9.9 x 8 mm Oval Cut From India

Moonstone

2.36ct1 pc
$ 18.88
9.9 x 8 mm
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2.17 ct Blue Zircon, 4.5 mm Diamond Cut From Cambodia, Photo A

2.17 ct Blue Zircon, 4.5 mm Diamond Cut From Cambodia

Zircon

2.17ct total4 pcs
$ 28.64
4.5 mm
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59.63 ct Oval Jasper, 38.2 x 26.2 mm From Indonesia, Photo A

59.63 ct Oval Jasper, 38.2 x 26.2 mm From Indonesia

Jasper

59.63ct1 pc
$ 29.51
38.2 x 26.2 mm
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23.32 ct Loose Swiss Blue Topaz, 20.1 x 15.1 mm Oval Cut From Brazil, Photo A

23.32 ct Loose Swiss Blue Topaz, 20.1 x 15.1 mm Oval Cut From Brazil

Topaz

23.32ct1 pc
$ 191.10
20.1 x 15.1 mm
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1.1 ct Loose Sky Blue Topaz, 7.4 x 5.3 mm Oval Cut From Brazil, Photo A

1.1 ct Loose Sky Blue Topaz, 7.4 x 5.3 mm Oval Cut From Brazil

Topaz

1.10ct1 pc
$ 7.26
7.4 x 5.3 mm
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3.6 ct Loose Yellow Tourmaline, 10.1 x 8.1 mm Cushion Cabochon From Mozambique, Photo A

3.6 ct Loose Yellow Tourmaline, 10.1 x 8.1 mm Cushion Cabochon From Mozambique

Tourmaline

3.60ct1 pc
$ 39.60
10.1 x 8.1 mm
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Photos are of Actual Products for Sale

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 27 x 20 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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