search
  • Sign In
    Sign Up

  • English speaking customer support only

    1-800-464-1640

    International:

    +66-39601289

  • Change Language
  • USD
  • CART
FREE SHIPPING

Buy Octagon Shape 10x8 mm Gems

(17)
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
More
Octagon Shape 10x8 mm Gems Single
Octagon Shape 10x8 mm Gems Pairs
Octagon Shape 10x8 mm Gems Lots
Octagon Shape 10x8 mm Gems Faceted
Octagon Shape 10x8 mm Gems Cabochons
Sort By:
Clear All
Photos are of Actual Products for Sale
7.75ct Loose Topaz | 7.75 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 8 mm, Photo A

7.75 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 8 mm

Natural Topaz, Qty: 2 pcs | 7.75 carat weight Topaz

7.75ct (total)2 Pieces
$ 51.15
10 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.88 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10 x 8 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VVS-VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
3.11ct Loose Emerald | 3.11 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 9.9 x 7.8 mm, Photo A
Click for Product Video (697831)

3.11 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 9.9 x 7.8 mm

Natural Emerald, Qty: 1 pc | 3.11 carat weight Emerald

3.11ct1 Piece
$ 777.50
9.9 x 7.8 mm
Item Description
Stone Type: Loose Emerald
Emerald Weight: 3.11 ct Emerald
Emerald Shape: Octagon Step Cut Emerald
Emerald Size: 9.9 x 7.8 mm Emerald
Emerald Color: Cool Green Emerald
Emerald Clarity: SI Emerald
Emerald Origin: Colombia Emerald
Emerald Treatment: Oiled
Emerald Quantity: 1
Emerald Certificate: GemSelect
Product Description:
View Details
Add to Cart
3.51ct Loose Emerald | 3.51 carat Emerald-Cut Emerald, loose Certified Emerald from Zambia, Natural Gem, 10.1 x 7.8 mm, Photo A
Click for Product Video (714595)

3.51 carat Emerald-Cut Emerald, loose Certified Emerald from Zambia, Natural Gem, 10.1 x 7.8 mm

Natural Emerald, Qty: 1 pc | 3.51 carat weight Emerald

3.51ct1 Piece
$ 9,477.00
10.1 x 7.8 mm
Item Description
Stone Type: Loose Emerald
Emerald Weight: 3.51 ct Emerald
Emerald Shape: Octagon Step Cut Emerald
Emerald Size: 10.1 x 7.8 mm Emerald
Emerald Color: Electric Green Emerald
Emerald Clarity: VS-SI Emerald
Emerald Origin: Zambia Emerald
Emerald Treatment: Oiled
Emerald Quantity: 1
Emerald Certificate: GemSelect
Product Description:
View Details
Add to Cart
3.61ct Loose Tourmaline | 3.61 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10 x 7.9 mm, Photo A

3.61 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10 x 7.9 mm

Natural Tourmaline, Qty: 1 pc | 3.61 carat weight Tourmaline

3.61ct1 Piece
$ 18.05
10 x 7.9 mm
Item Description
Stone Type: Loose Tourmaline
Tourmaline Weight: 3.61 ct Tourmaline
Tourmaline Shape: Octagon Step Cut Tourmaline
Tourmaline Size: 10 x 7.9 mm Tourmaline
Tourmaline Color: Schorl Tourmaline
Tourmaline Clarity: Opaque Tourmaline
Tourmaline Origin: Mozambique Tourmaline
Tourmaline Treatment: Untreated
Tourmaline Quantity: 1
Tourmaline Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.43ct Loose Topaz | 7.43 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm, Photo A

7.43 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm

Natural Topaz, Qty: 2 pcs | 7.43 carat weight Topaz

7.43ct (total)2 Pieces
$ 44.58
10.1 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.72 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10.1 x 8 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.55ct Loose Topaz | 7.55 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10 x 8 mm, Photo A

7.55 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10 x 8 mm

Natural Topaz, Qty: 2 pcs | 7.55 carat weight Topaz

7.55ct (total)2 Pieces
$ 41.53
10 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.78 ct Topaz
Topaz Shape: Octagon Facet Topaz
Topaz Size: 10 x 8 mm Topaz
Topaz Color: White Topaz
Topaz Clarity: VVS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Untreated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
8.32ct Loose Topaz | 8.32 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 7.9 mm, Photo A

8.32 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 7.9 mm

Natural Topaz, Qty: 2 pcs | 8.32 carat weight Topaz

8.32ct (total)2 Pieces
$ 49.92
10 x 7.9 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 4.16 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10 x 7.9 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
3.95ct Loose Topaz | 3.95 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm, Photo A
Click for Product Video (614148)

3.95 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm

Natural Topaz, Qty: 21 pcs | 3.95 carat weight Topaz

Select pcs
$ 30.43
10.1 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.95 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10.1 x 8 mm Topaz
Topaz Color: Swiss Blue Topaz
Topaz Clarity: VVS-VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 1
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
8.15ct Loose Topaz | 8.15 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 10 x 8.1 mm, Photo A

8.15 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 10 x 8.1 mm

Natural Topaz, Qty: 2 pcs | 8.15 carat weight Topaz

8.15ct (total)2 Pieces
$ 53.79
10 x 8.1 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 4.08 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10 x 8.1 mm Topaz
Topaz Color: Swiss Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.63ct Loose Topaz | 7.63 carat Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 9.9 x 8.1 mm, Photo A

7.63 carat Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 9.9 x 8.1 mm

Natural Topaz, Qty: 2 pcs | 7.63 carat weight Topaz

7.63ct (total)2 Pieces
$ 61.04
9.9 x 8.1 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.82 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 9.9 x 8.1 mm Topaz
Topaz Color: Light Blue Topaz
Topaz Clarity: VVS-VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
8.20ct Loose Topaz | 8.2 carat Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 9.9 x 7.9 mm, Photo A

8.2 carat Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 9.9 x 7.9 mm

Natural Topaz, Qty: 2 pcs | 8.20 carat weight Topaz

8.20ct (total)2 Pieces
$ 65.60
9.9 x 7.9 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 4.10 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 9.9 x 7.9 mm Topaz
Topaz Color: Light Greenish Blue Topaz
Topaz Clarity: VVS-VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
6.61ct Loose Topaz | 6.61 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10.1 x 7.9 mm, Photo A

6.61 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10.1 x 7.9 mm

Natural Topaz, Qty: 2 pcs | 6.61 carat weight Topaz

6.61ct (total)2 Pieces
$ 36.36
10.1 x 7.9 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.31 ct Topaz
Topaz Shape: Octagon Facet Topaz
Topaz Size: 10.1 x 7.9 mm Topaz
Topaz Color: Clear White Topaz
Topaz Clarity: VVS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Untreated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.50ct Loose Topaz | 7.5 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 9.9 x 7.9 mm, Photo A

7.5 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 9.9 x 7.9 mm

Natural Topaz, Qty: 2 pcs | 7.50 carat weight Topaz

7.50ct (total)2 Pieces
$ 37.50
9.9 x 7.9 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.75 ct Topaz
Topaz Shape: Octagon Facet Topaz
Topaz Size: 9.9 x 7.9 mm Topaz
Topaz Color: White Topaz
Topaz Clarity: VVS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Untreated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.39ct Loose Topaz | 7.39 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 7.8 mm, Photo A

7.39 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10 x 7.8 mm

Natural Topaz, Qty: 2 pcs | 7.39 carat weight Topaz

7.39ct (total)2 Pieces
$ 48.77
10 x 7.8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.70 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10 x 7.8 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
6.99ct Loose Topaz | 6.99 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm, Photo A

6.99 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.1 x 8 mm

Natural Topaz, Qty: 2 pcs | 6.99 carat weight Topaz

6.99ct (total)2 Pieces
$ 46.13
10.1 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.50 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10.1 x 8 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VVS-VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.52ct Loose Topaz | 7.52 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10 x 8 mm, Photo A

7.52 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 10 x 8 mm

Natural Topaz, Qty: 2 pcs | 7.52 carat weight Topaz

7.52ct (total)2 Pieces
$ 41.36
10 x 8 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.76 ct Topaz
Topaz Shape: Octagon Facet Topaz
Topaz Size: 10 x 8 mm Topaz
Topaz Color: White Topaz
Topaz Clarity: VVS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Untreated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart
7.49ct Loose Topaz | 7.49 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.3 x 8.1 mm, Photo A

7.49 carat Sky Blue Topaz, Emerald Cut loose Topaz from Brazil, Natural Gems, 10.3 x 8.1 mm

Natural Topaz, Qty: 2 pcs | 7.49 carat weight Topaz

7.49ct (total)2 Pieces
$ 49.43
10.3 x 8.1 mm
Item Description
Stone Type: Loose Topaz
Topaz Weight: 3.75 ct Topaz
Topaz Shape: Octagon Step Cut Topaz
Topaz Size: 10.3 x 8.1 mm Topaz
Topaz Color: Sky Blue Topaz
Topaz Clarity: VS Topaz
Topaz Origin: Brazil Topaz
Topaz Treatment: Irradiated
Topaz Quantity: 2
Topaz Certificate: GemSelect
Product Description:
View Details
Add to Cart

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.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

I have been buy from you for years

Posted By JohnA in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent experience!

Posted By Steph in April, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

Posted By Chico in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024
Source: Bizrate

Overall Rating -> 7 star ratings

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023
Source: Bizrate

Overall Rating -> 8 star ratings

purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

Posted By MI photo in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I particularly like information about product provided with purchase.

Posted By Dick in May, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

Posted By Orchidisle in February, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

An it was good.

Posted By Miguel in June, 2023
Source: Bizrate

Overall Rating -> 10 star ratings

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023
Source: Bizrate
STAY IN TOUCH | NEWSLETTER
*You're signing up to receive GemSelect promotional email.
Partners and Trust Payment options

Switch to Mobile Version

Copyright © 2005-2024 GemSelect.com all rights reserved.

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

255

Continue Shopping
Checkout
Continue Shopping
Checkout