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Buy Octagon Shape 10x8 mm Gems

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Octagon Shape 10x8 mm Gems Weight Octagon Shape 10x8 mm Gems Size Octagon Shape 10x8 mm Gems Clarity Octagon Shape 10x8 mm Gems Price Octagon Shape 10x8 mm Gems Origin
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2.97 ct Multicolor Mystic Quartz, 10.1 x 10 mm Trillion Concave Cut From Brazil, Photo A

2.97 ct Multicolor Mystic Quartz, 10.1 x 10 mm Trillion Concave Cut From Brazil

Mystic Quartz

2.97ct1 pc
$ 8.91
10.1 x 10 mm
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15.88 ct Rainbow Pyrite, 22.9 x 20.4 mm From Russia, Photo A

15.88 ct Rainbow Pyrite, 22.9 x 20.4 mm From Russia

Rainbow Pyrite

15.88ct1 pc
$ 41.29
22.9 x 20.4 mm
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7.25 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 21 x 11.1 mm, Photo A

7.25 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 21 x 11.1 mm

Opal

7.25ct1 pc
$ 181.25
21 x 11.1 mm
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10.01 ct Oval Pietersite, 14 x 10.1 mm From Namibia, Photo A

10.01 ct Oval Pietersite, 14 x 10.1 mm From Namibia

Pietersite

10.01ct total2 pcs
$ 30.03
14 x 10.1 mm
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29.44 ct Oval Quartz With Marcasite, 26.9 x 18 mm From Brazil, Photo A

29.44 ct Oval Quartz With Marcasite, 26.9 x 18 mm From Brazil

Quartz With Marcasite

29.44ct1 pc
$ 189.12
26.9 x 18 mm
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2.76 carat Trillion Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 4 mm, Photo A

2.76 carat Trillion Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 4 mm

Pyrope Garnet

2.76ct total10 pcs
$ 21.25
4 x 4 mm
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0.6 carat Green Sapphire, Cushion loose Sapphire from Tanzania, Natural Gem, 4.6 x 4.6 mm, Photo A

0.6 carat Green Sapphire, Cushion loose Sapphire from Tanzania, Natural Gem, 4.6 x 4.6 mm

Sapphire

0.60ct1 pc
$ 32.73
4.6 x 4.6 mm
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0.18 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm, Photo A

0.18 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm

Ruby

0.18ct1 pc
$ 59.60
3.4 mm
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2.18 ct Round Cat's Eye Scapolite, 8.5 mm From Madagascar, Photo A

2.18 ct Round Cat's Eye Scapolite, 8.5 mm From Madagascar

Cat's Eye Scapolite

2.18ct1 pc
$ 11.99
8.5 mm
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0.9 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6 x 4.1 mm, Photo A

0.9 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6 x 4.1 mm

Peridot

0.90ct total2 pcs
$ 7.92
6 x 4.1 mm
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0.82 ct Oval Cut Peridot, 7.1 x 5.1 mm From China, Photo A

0.82 ct Oval Cut Peridot, 7.1 x 5.1 mm From China

Peridot

0.82ct1 pc
$ 11.48
7.1 x 5.1 mm
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5.53 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.4 mm, Photo A

5.53 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.4 mm

Amethyst

5.53ct1 pc
$ 24.33
13.4 x 7.9 mm
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17.57 ct Carved Ruby-Zoisite, 17.1 x 16 mm From Tanzania, Photo A

17.57 ct Carved Ruby-Zoisite, 17.1 x 16 mm From Tanzania

Ruby-Zoisite

17.57ct1 pc
$ 21.44
17.1 x 16 mm
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2.65 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 6.2 x 6.1 mm, Photo A

2.65 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 6.2 x 6.1 mm

Hessonite Garnet

2.65ct total2 pcs
$ 44.36
6.2 x 6.1 mm
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2.29 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.2 x 7.1 mm, Photo A

2.29 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.2 x 7.1 mm

Hessonite Garnet

2.29ct1 pc
$ 39.17
7.2 x 7.1 mm
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1.51 ct Oval Cat's Eye Moonstone, 8 x 6.1 mm From India, Photo A

1.51 ct Oval Cat's Eye Moonstone, 8 x 6.1 mm From India

Cat's Eye Moonstone

1.51ct1 pc
$ 4.98
8 x 6.1 mm
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3.88 ct Round Prehnite, 7.7 mm From South Africa, Photo A

3.88 ct Round Prehnite, 7.7 mm From South Africa

Prehnite

3.88ct total2 pcs
$ 21.16
7.7 mm
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0.36 ct Blue Apatite, 3.6 mm Round Cut From Madagascar, Photo A

0.36 ct Blue Apatite, 3.6 mm Round Cut From Madagascar

Apatite

0.36ct total2 pcs
$ 7.71
3.6 mm
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9.25 ct Asscher Cut Rose Quartz, 12.2 x 12.2 mm From South Africa, Photo A

9.25 ct Asscher Cut Rose Quartz, 12.2 x 12.2 mm From South Africa

Rose Quartz

9.25ct1 pc
$ 50.88
12.2 x 12.2 mm
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7.85 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm, Photo A

7.85 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

Zircon

7.85ct total10 pcs
$ 46.97
6.1 x 4.1 mm
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31.48 ct Oval Cat's Eye Opal, 27.1 x 18.7 mm From Madagascar, Photo A

31.48 ct Oval Cat's Eye Opal, 27.1 x 18.7 mm From Madagascar

Cat's Eye Opal

31.48ct1 pc
$ 173.14
27.1 x 18.7 mm
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1.79 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 6 mm, Photo A

1.79 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 6 mm

Tanzanite

1.79ct total2 pcs
$ 29.54
6 mm
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6.58 ct Loose Carved Amethyst, 16 x 12 mm From Brazil, Photo A

6.58 ct Loose Carved Amethyst, 16 x 12 mm From Brazil

Amethyst

6.58ct1 pc
$ 39.48
16 x 12 mm
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21.58 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 20 x 14.9 mm, Photo A
Click for Product Video (480116)

21.58 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 20 x 14.9 mm

Topaz

21.58ct1 pc
$ 176.85
20 x 14.9 mm
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2.35 carat Yellow Citrine, Carved Flower loose Citrine from Brazil, Natural Untreated Gem, 9 x 9 mm, Photo A

2.35 carat Yellow Citrine, Carved Flower loose Citrine from Brazil, Natural Untreated Gem, 9 x 9 mm

Citrine

2.35ct1 pc
$ 18.10
9 x 9 mm
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3.01 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.1 mm, Photo A

3.01 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.1 mm

Topaz

3.01ct total2 pcs
$ 19.66
7.1 x 7.1 mm
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7.76 carat Purple Kunzite, Pear Shape loose Kunzite from Afghanistan, Natural Untreated Gem, 13 x 10.7 mm, Photo A

7.76 carat Purple Kunzite, Pear Shape loose Kunzite from Afghanistan, Natural Untreated Gem, 13 x 10.7 mm

Kunzite

7.76ct1 pc
$ 214.41
13 x 10.7 mm
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2.94 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.2 mm, Photo A

2.94 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.2 mm

Topaz

2.94ct total2 pcs
$ 21.12
7.1 x 7.2 mm
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9.43 ct Round Checkerboard Labradorite, 12.2 mm From Madagascar, Photo A

9.43 ct Round Checkerboard Labradorite, 12.2 mm From Madagascar

Labradorite

9.43ct total2 pcs
$ 20.75
12.2 mm
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8.14 ct Loose Oval Agate, 12.9 x 11.8 mm From Indonesia, Photo A

8.14 ct Loose Oval Agate, 12.9 x 11.8 mm From Indonesia

Agate

8.14ct1 pc
$ 13.84
12.9 x 11.8 mm
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3.46 ct Oval Cut Golden Beryl, 11.2 x 8.5 mm From Madagascar, Photo A

3.46 ct Oval Cut Golden Beryl, 11.2 x 8.5 mm From Madagascar

Golden Beryl

3.46ct1 pc
$ 86.93
11.2 x 8.5 mm
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3.96 ct Round Pietersite, 11.1 mm From Namibia, Photo A

3.96 ct Round Pietersite, 11.1 mm From Namibia

Pietersite

3.96ct1 pc
$ 9.39
11.1 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 10 x 8 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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