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ID: 3776151 pcs
thumb image of 4ct Trillion Cabochon Multicolor Ammolite (ID: 377615)
3.99 ct Ammolite
16.1 x 8.8 mm
$ 39.90
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ID: 4211692 pcs
thumb image of 2ct Trillion Facet Violet Blue Tanzanite (ID: 421169)
1.96 ct Tanzanite
7.1 x 7 mm
$ 227.73
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ID: 4213102 pcs
thumb image of 2.3ct Trillion Facet Violet Blue Tanzanite (ID: 421310)
2.27 ct Tanzanite
7.3 x 6.9 mm
$ 263.75
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ID: 4213112 pcs
thumb image of 2ct Trillion Facet Violet Blue Tanzanite (ID: 421311)
1.96 ct Tanzanite
7.1 x 6.9 mm
$ 227.73
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ID: 4527012 pcs
thumb image of 2.9ct Trillion Facet Sky Blue Topaz (ID: 452701)
2.87 ct Topaz
7.1 x 7.1 mm
$ 20.09
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ID: 4712751 pcs
thumb image of 118.4ct Trillion Cabochon Multicolor Rhodochrosite (ID: 471275)
118.37 ct Rhodochrosite
55 x 30.5 mm
$ 185.20
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ID: 4788471 pcs
thumb image of 0.4ct Trillion Facet Light Pink Morganite (ID: 478847)
0.36 ct Morganite
5.1 x 4.9 mm
$ 19.80
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ID: 3843411 pcs
thumb image of 7.5ct Trillion Facet Violet Blue Tanzanite (ID: 384341)
7.47 ct Tanzanite
11.3 x 11.3 mm
$ 3780.79
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ID: 4211832 pcs
thumb image of 1.9ct Trillion Facet Violet Blue Tanzanite (ID: 421183)
1.89 ct Tanzanite
6.6 x 6.5 mm
$ 219.60
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ID: 4788211 pcs
thumb image of 0.4ct Trillion Facet Light Pink Morganite (ID: 478821)
0.36 ct Morganite
5 x 4.9 mm
$ 19.80
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ID: 37550710 pcs
thumb image of 2.3ct Trillion Facet Yellow Orange Sapphire (ID: 375507)
2.25 ct Sapphire
3.8 x 3.8 mm
$ 66.82
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ID: 4212262 pcs
thumb image of 2.1ct Trillion Facet Violet Blue Tanzanite (ID: 421226)
2.10 ct Tanzanite
7 x 6.7 mm
$ 244.00
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ID: 4243345 pcs
thumb image of 2.6ct Trillion Facet Pinkish Rose Rhodolite Garnet (ID: 424334)
2.58 ct Rhodolite Garnet
5.1 x 5.1 mm
$ 20.64
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ID: 4242021 pcs
thumb image of 1.4ct Trillion Facet Violet Blue Tanzanite (ID: 424202)
1.44 ct Tanzanite
7.1 x 7 mm
$ 166.68
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ID: 4212182 pcs
thumb image of 1.9ct Trillion Facet Violet Blue Tanzanite (ID: 421218)
1.93 ct Tanzanite
7.2 x 7 mm
$ 224.25
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ID: 4242781 pcs
thumb image of 1.1ct Trillion Facet Violet Blue Tanzanite (ID: 424278)
1.05 ct Tanzanite
7 x 7 mm
$ 121.54
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ID: 3338541 pcs
thumb image of 21.9ct Trillion Cabochon Multicolor Chrysocolla (ID: 333854)
21.93 ct Chrysocolla
23.7 x 18.2 mm
$ 10.96
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ID: 4212192 pcs
thumb image of 2.2ct Trillion Facet Violet Blue Tanzanite (ID: 421219)
2.16 ct Tanzanite
7.3 x 7.1 mm
$ 250.97
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ID: 2675564 pcs
thumb image of 18.3ct Trillion Rose-Cut Black Spinel (ID: 267556)
18.25 ct Spinel
9.8 x 9.6 mm
$ 91.25
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ID: 4529111 pcs
thumb image of 24.6ct Trillion Cabochon Multicolor Ammolite (ID: 452911)
24.56 ct Ammolite
28.4 x 20 mm
$ 245.60
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ID: 2848041 pcs
thumb image of 6.1ct Trillion Cabochon Multicolor Ammolite (ID: 284804)
6.14 ct Ammolite
16.2 x 14.7 mm
$ 61.40
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Trillion Shaped Gems
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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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart