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ID: 4211852 pcs
thumb image of 2.1ct Trillion Facet Violet Blue Tanzanite (ID: 421185)
2.14 ct Tanzanite
7.4 x 7 mm
$ 248.65
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ID: 3913691 pcs
thumb image of 10.4ct Trillion Cabochon Gold Sheen Black Obsidian (ID: 391369)
10.36 ct Obsidian
17.3 x 16.5 mm
$ 10.36
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ID: 4297324 pcs
thumb image of 1.8ct Trillion Facet Swiss Blue Topaz (ID: 429732)
1.81 ct Topaz
5.3 x 5.1 mm
$ 9.05
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ID: 4242771 pcs
thumb image of 1.1ct Trillion Facet Violet Blue Tanzanite (ID: 424277)
1.05 ct Tanzanite
7.2 x 7 mm
$ 121.54
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ID: 4671091 pcs
thumb image of 0.4ct Trillion Facet Light Pink Morganite (ID: 467109)
0.35 ct Morganite
5 x 4.6 mm
$ 19.25
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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
$ 150.58
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ID: 4241916 pcs
thumb image of 2.7ct Trillion Facet Pinkish Rose Rhodolite Garnet (ID: 424191)
2.69 ct Rhodolite Garnet
5.1 x 5 mm
$ 21.52
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ID: 4671121 pcs
thumb image of 0.4ct Trillion Facet Light Pink Morganite (ID: 467112)
0.35 ct Morganite
5.1 x 4.9 mm
$ 19.25
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ID: 4175081 pcs
thumb image of 3.7ct Trillion Facet Swiss Blue Topaz (ID: 417508)
3.73 ct Topaz
10.1 x 9.9 mm
$ 26.11
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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: 4549512 pcs
thumb image of 16.4ct Trillion Cabochon Multicolor Fossil Coral (ID: 454951)
16.43 ct Fossil Coral
21.4 x 13 mm
$ 16.43
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ID: 4671151 pcs
thumb image of 0.4ct Trillion Facet Light Pink Morganite (ID: 467115)
0.36 ct Morganite
4.8 x 4.7 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: 4535681 pcs
thumb image of 21.8ct Trillion Cabochon Multicolor Ammolite (ID: 453568)
21.83 ct Ammolite
19.8 x 26.7 mm
$ 807.71
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ID: 4535651 pcs
thumb image of 21.1ct Trillion Cabochon Multicolor Ammolite (ID: 453565)
21.05 ct Ammolite
26.2 x 21.1 mm
$ 778.85
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ID: 3361406 pcs
thumb image of 1.4ct Trillion Facet Multicolor Tourmaline (ID: 336140)
1.44 ct Tourmaline
4.1 x 4.1 mm
$ 31.75
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ID: 3776371 pcs
thumb image of 20.4ct Trillion Cabochon Multicolor Ammolite (ID: 377637)
20.44 ct Ammolite
28.5 x 19.1 mm
$ 771.41
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ID: 4009061 pcs
thumb image of 6.8ct Trillion Facet Violet Blue Tanzanite (ID: 400906)
6.83 ct Tanzanite
11.9 x 11.3 mm
$ 3441.50
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ID: 4715821 pcs
thumb image of 5.8ct Trillion Cabochon Multicolor Fire Agate (ID: 471582)
5.76 ct Fire Agate
17.7 x 10.6 mm
$ 45.22
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ID: 4550512 pcs
thumb image of 18.1ct Trillion Cabochon Multicolor Fossil Coral (ID: 455051)
18.06 ct Fossil Coral
17.3 x 11 mm
$ 18.06
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ID: 4009071 pcs
thumb image of 6.3ct Trillion Facet Violet Blue Tanzanite (ID: 400907)
6.30 ct Tanzanite
13.6 x 12.9 mm
$ 3174.44
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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