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Buy Octagon Shape 27 x 20 mm Gems

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0.60ct Natural Intense Pinkish Purple Sapphire, Fancy, VVS, Photo A

0.60ct Natural Intense Pinkish Purple Sapphire, Fancy, VVS

Sapphire

0.60ct1 pc
$ 72.48
7.6 x 5.3 mm
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1.31ctw Natural Light Lively Green Peridot, Marquise, VVS-VS, Photo A

1.31ctw Natural Light Lively Green Peridot, Marquise, VVS-VS

Peridot

1.31ct total2 pcs
$ 13.84
7.6 x 4 mm
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0.93ct Natural Light Pink Strawberry Quartz, Oval, Translucent, Photo A

0.93ct Natural Light Pink Strawberry Quartz, Oval, Translucent

Strawberry Quartz

0.93ct1 pc
$ 14.16
8 x 6 mm (calibrated)
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1.34ct Natural Medium Pink Tourmaline, Oval, Transparent, Photo A

1.34ct Natural Medium Pink Tourmaline, Oval, Transparent

Tourmaline

1.34ct1 pc
$ 33.50
8 x 6 mm (calibrated)
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37.52ct Natural Golden-Orange Calcite, Oval, Translucent, Photo A

37.52ct Natural Golden-Orange Calcite, Oval, Translucent

Calcite

37.52ct1 pc
$ 31.07
40 x 20.1 mm
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2.28ct Natural Orangeish Brown Hessonite Garnet, Oval, VS-SI, Photo A

2.28ct Natural Orangeish Brown Hessonite Garnet, Oval, VS-SI

Hessonite Garnet

2.28ct1 pc
$ 50.14
9 x 7 mm (calibrated)
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1.73ct Natural Earthy Pink Strawberry Quartz, Round, Translucent, Photo A

1.73ct Natural Earthy Pink Strawberry Quartz, Round, Translucent

Strawberry Quartz

1.73ct1 pc
$ 15.98
8 mm (calibrated)
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0.45ct Natural Medium Purple Spinel, Cushion, VVS-VS, Photo A

0.45ct Natural Medium Purple Spinel, Cushion, VVS-VS

Spinel

0.45ct1 pc
$ 37.80
4.8 x 4.1 mm
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2.49ctw Natural Clear White Sillimanite Cat's Eye, Oval, Translucent, Photo A

2.49ctw Natural Clear White Sillimanite Cat's Eye, Oval, Translucent

Sillimanite Cat's Eye

2.49ct total2 pcs
$ 11.89
7 x 5 mm (calibrated)
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0.69ct Natural Medium Brown Sphene, Oval, Transparent, Photo A

0.69ct Natural Medium Brown Sphene, Oval, Transparent

Sphene

0.69ct1 pc
$ 4.14
5.6 x 4.6 mm
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3.11ctw Natural Warm Brown Rutile Quartz, Round, Translucent, Photo A

3.11ctw Natural Warm Brown Rutile Quartz, Round, Translucent

Rutile Quartz

3.11ct total2 pcs
$ 12.31
7 mm (calibrated)
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2.32ctw Natural Medium Red Pyrope Garnet, Square, VS, Photo A

2.32ctw Natural Medium Red Pyrope Garnet, Square, VS

Pyrope Garnet

2.32ct total4 pcs
$ 21.43
5 x 5 mm (calibrated)
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1.49ct Natural Deep Lavender Spinel, Cushion, VS, Photo A

1.49ct Natural Deep Lavender Spinel, Cushion, VS

Spinel

1.49ct1 pc
$ 112.18
6.7 x 5.5 mm
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6.60ct Natural Light Pink Rose Quartz, Flower Cut, Transparent, Photo A

6.60ct Natural Light Pink Rose Quartz, Flower Cut, Transparent

Rose Quartz

6.60ct1 pc
$ 31.63
14.3 x 10 mm
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13.19ct Natural Medium Violet Amethyst, Round, VVS, Photo A

13.19ct Natural Medium Violet Amethyst, Round, VVS

Amethyst

13.19ct1 pc
$ 110.80
16 mm (calibrated)
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2.55ctw Natural Medium Violet Amethyst, Oval, VVS-VS, Photo A

2.55ctw Natural Medium Violet Amethyst, Oval, VVS-VS

Amethyst

2.55ct total6 pcs
$ 16.84
6 x 4 mm (calibrated)
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1.05ct Natural Light Yellow Color-Change Diaspore, Pear Shape, VVS-VS, Photo A

1.05ct Natural Light Yellow Color-Change Diaspore, Pear Shape, VVS-VS

Color-Change Diaspore

1.05ct1 pc
$ 44.35
11 x 4.3 mm
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5.08ctw Natural Light Caramel Brown Moonstone, Flower Cut, Translucent, Photo A

5.08ctw Natural Light Caramel Brown Moonstone, Flower Cut, Translucent

Moonstone

5.08ct total2 pcs
$ 26.82
9.3 x 8.5 mm
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3.82ct Natural Multicolor Fire Agate, Fancy, Opaque, Photo A

3.82ct Natural Multicolor Fire Agate, Fancy, Opaque

Fire Agate

3.82ct1 pc
$ 64.85
14.3 x 8.3 mm
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9.31ct Natural Medium Pink Strawberry Quartz, Oval, Translucent, Photo A

9.31ct Natural Medium Pink Strawberry Quartz, Oval, Translucent

Strawberry Quartz

9.31ct1 pc
$ 67.34
16 x 12 mm (calibrated)
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0.91ct Natural Deep Green Tourmaline, Octagon / Emerald Cut, VS-SI, Photo A

0.91ct Natural Deep Green Tourmaline, Octagon / Emerald Cut, VS-SI

Tourmaline

0.91ct1 pc
$ 28.82
11.2 x 3.4 mm
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11.97ct Natural Peach Orange Moonstone, Round, Opaque, Photo A

11.97ct Natural Peach Orange Moonstone, Round, Opaque

Moonstone

11.97ct1 pc
$ 28.73
14 mm (calibrated)
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2.78ct Natural Medium Green Malachite, Oval, Opaque, Photo A

2.78ct Natural Medium Green Malachite, Oval, Opaque

Malachite

2.78ct1 pc
$ 3.34
9.3 x 6.6 mm
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22.58ct Natural Swiss Blue Topaz, Oval, VVS, Photo A

22.58ct Natural Swiss Blue Topaz, Oval, VVS

Topaz

22.58ct1 pc
$ 208.64
20 x 15 mm (calibrated)
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8.30ctw Natural Multicolor Mystic Quartz, Cushion, VVS, Photo A

8.30ctw Natural Multicolor Mystic Quartz, Cushion, VVS

Mystic Quartz

8.30ct total2 pcs
$ 59.76
10 x 10 mm (calibrated)
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3.03ct Natural Multicolor Opal, Pear Shape, Transparent, Photo A

3.03ct Natural Multicolor Opal, Pear Shape, Transparent

Opal

3.03ct1 pc
$ 91.78
14.6 x 8.9 mm
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1.63ct Natural Multicolor Labradorite, Pear Shape, Translucent, Photo A

1.63ct Natural Multicolor Labradorite, Pear Shape, Translucent

Labradorite

1.63ct1 pc
$ 4.34
9 x 6 mm (calibrated)
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1.65ct Natural Bright Gold Citrine, Octagon / Emerald Cut, VVS-VS, Photo A

1.65ct Natural Bright Gold Citrine, Octagon / Emerald Cut, VVS-VS

Citrine

1.65ct1 pc
$ 15.25
8 x 6 mm (calibrated)
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0.18ct Natural Light Green Sapphire, Square, VS, Photo A

0.18ct Natural Light Green Sapphire, Square, VS

Sapphire

0.18ct1 pc
$ 30.24
3 x 3 mm (calibrated)
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14.30ct Natural Multicolor Rainbow Pyrite, Trillion, Opaque, Photo A

14.30ct Natural Multicolor Rainbow Pyrite, Trillion, Opaque

Rainbow Pyrite

14.30ct1 pc
$ 60.58
21.1 x 18.7 mm
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3.55ct Natural Golden Citrine, Oval, VVS, Photo A

3.55ct Natural Golden Citrine, Oval, VVS

Citrine

3.55ct1 pc
$ 29.82
11 x 9 mm (calibrated)
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2.71ct Natural Iris Violet Amethyst, Trillion, VVS-VS, Photo A

2.71ct Natural Iris Violet Amethyst, Trillion, VVS-VS

Amethyst

2.71ct1 pc
$ 22.76
10 x 10 mm (calibrated)
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Why Buy Octagon Shape 27 X 20 Mm Gems from GemSelect?

  • Trusted Worldwide Since 2003
  • Supplying natural gemstones to jewelers and collectors in 120+ countries
  • Verified, photographed & measured gemstones
  • Secure checkout and insured worldwide delivery
  • 30-day returns & satisfaction guarantee

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

A pleasant experience and many choices to choose from

Posted By Krackenking in November, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

everything was fine

Posted By Marc in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Took a chance on purchasing my gemstones from Gemselect and was impressed. 10/10

Posted By KT in September, 2025
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Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
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Overall Rating -> 9 star ratings

I love wide range of stones. Always have my preference.

Posted By Ray in April, 2025
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Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
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Overall Rating -> 10 star ratings

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones. .

Posted By Steven M. in February, 2025
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Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate
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