Calibrated 18 x 13 mm Octagon Shape Natural Gemstones: GemSelect

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:

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:

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:

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:

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:

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:

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:

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:

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:

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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Gemstone Information

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Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

Posted By Sboro in August, 2023

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Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

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Overall Rating -> 7

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

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Overall Rating -> 10

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Overall Rating -> 9

My first purchase went well. I will purchase more gems in the future.

Posted By NoHalalAl in March, 2024

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Overall Rating -> 10

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

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Overall Rating -> 10

Excellent selection of products. Website easy to navigate and make purchases.

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Overall Rating -> 10

Easy to use.

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Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

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Overall Rating -> 10

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

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Overall Rating -> 10

The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

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Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

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The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

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Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

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Selected Gemstones

Gemstones A-Z

Buy Octagon Shape 18x13 mm Gems

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

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

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

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

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

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

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

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

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

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