Buy Trillion Shape Gemstones at Affordable Prices from GemSelect

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	17.64 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	24.6 x 22.2 mm Obsidian
Obsidian Color:	Black with Gold Sheen Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	18.17 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	24.8 x 19.7 mm Obsidian
Obsidian Color:	Black with Gold Sheen Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	38.75 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	34.9 x 25.8 mm Obsidian
Obsidian Color:	Black with Gold Sheen Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	Mexico Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	15.82 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	23.6 x 20.4 mm Obsidian
Obsidian Color:	Light Blackish Brown Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	26.72 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	27.3 x 21.9 mm Obsidian
Obsidian Color:	Light Blackish Brown Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	Mexico Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	17.87 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	24.8 x 20.1 mm Obsidian
Obsidian Color:	Black with Gold Sheen Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	12.98 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	23.2 x 19.2 mm Obsidian
Obsidian Color:	Light Blackish Brown Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	15.68 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	25 x 21 mm Obsidian
Obsidian Color:	Black with Gold Sheen Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Obsidian
Obsidian Weight:	18.03 ct Obsidian
Obsidian Shape:	Trillion Cabochon Obsidian
Obsidian Size:	24.1 x 19.9 mm Obsidian
Obsidian Color:	Light Blackish Brown Obsidian
Obsidian Clarity:	Opaque Obsidian
Obsidian Origin:	United States Obsidian
Obsidian Treatment:	Untreated
Obsidian Quantity:	1
Obsidian Certificate:	GemSelect
Product Description:

When it comes to gemstones, shape and cut are are often used interchangeably. The reason is because the difference between the two isn't always obvious. Shape refers to the overall outline of a stone, while 'cut' refers the actual style, process or technique used to work the rough into finished gemstone pieces. Historically, a trilliant gem exhibits the basic trilliant design, featuring 43 facets cut into a triangular shape gemstone that has been worked into 1:1 ratio and cut with 43 facets. The 43 facets are based on the 'brilliant-cut' in order to maximize 'brilliance'. Like other brilliant cuts, the equilateral form of a well-cut trilliant gem should return a substantial degree of light and color to the eye. The trillion cutting style was originally introduced by the Asscher brothers (Asscher-cut) and was trademarked in 1962 by Henry Meyer Diamond Company of New York. Since the expiration of their 'trillion' patent, the term can be used to refer to all triangular shaped gems, even those which are not faceted.

Many trillions today are step-cut, scissor-cut, plain-cut, mixed-cut with undulating surfaces, and trillion gemstones are even cut en cabochon, featuring a flat bottom with a low or high dome depending on the type of gem. As long as the gemstone has a face-up outline or shape which resembles a triangle, then it can be described as a trillion-shaped gemstone. Gemstones like zircon, spinel, diamond, aquamarine, beryl and white sapphire are often cut as trillions to maximize brilliance, while darker gemstones such as tanzanite, spessartite garnet, rhodolite garnet and amethyst are given a trilliant cut in order to lighten and brighten color (rather than focusing on brilliance). Since most diamond-cut styles are modified for colored stones, many colored stone dealers use alternative terms that refer to shape rather than cut-style.

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Gemstone Information

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Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

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Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

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Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

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Overall Rating -> 10

Super easy to do business for great products.

Posted By BoBBy in January, 2024

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Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

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Overall Rating -> 10

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

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Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

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Overall Rating -> 7

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

Posted By Steve in November, 2023

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Overall Rating -> 10

Great selection, I love your site! Great product visibility, information, etc.

Posted By John in February, 2024

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Overall Rating -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

Posted By Mark in March, 2024

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Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

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Overall Rating -> 10

Great site

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Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

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Selected Gemstones

Gemstones A-Z

Buy Trillion Shaped Gemstones

17.64 ct Trillion Obsidian, 24.6 x 22.2 mm From the United States

Natural Obsidian, Qty: 1 pc | 17.64 carat weight Obsidian

18.17 ct Trillion Obsidian, 24.8 x 19.7 mm From the United States

Natural Obsidian, Qty: 1 pc | 18.17 carat weight Obsidian

38.75 ct Trillion Obsidian, 34.9 x 25.8 mm From Mexico

Natural Obsidian, Qty: 1 pc | 38.75 carat weight Obsidian

15.82 ct Trillion Obsidian, 23.6 x 20.4 mm From the United States

Natural Obsidian, Qty: 1 pc | 15.82 carat weight Obsidian

26.72 ct Trillion Obsidian, 27.3 x 21.9 mm From Mexico

Natural Obsidian, Qty: 1 pc | 26.72 carat weight Obsidian

17.87 ct Trillion Obsidian, 24.8 x 20.1 mm From the United States

Natural Obsidian, Qty: 1 pc | 17.87 carat weight Obsidian

12.98 ct Trillion Obsidian, 23.2 x 19.2 mm From the United States

Natural Obsidian, Qty: 1 pc | 12.98 carat weight Obsidian

15.68 ct Trillion Obsidian, 25 x 21 mm From the United States

Natural Obsidian, Qty: 1 pc | 15.68 carat weight Obsidian

18.03 ct Trillion Obsidian, 24.1 x 19.9 mm From the United States

Natural Obsidian, Qty: 1 pc | 18.03 carat weight Obsidian

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