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Buy Trillion Shape 16x16 mm Gems

(4)
Gem Type Weight Size Clarity Price Origin
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Light Yellow Quartz Gem - 9.1ct Carved Trillion (ID: 493913)

Trillion Yellow Quartz

9.1ct
15.7 x 15.6 mm
$ 45.30
Item in Stock
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1 pc
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Multicolor Boulder Opal Gem - 7.6ct Trillion Cabochon (ID: 523135)

Trillion Multicolor Boulder Opal

7.6ct
16.3 x 15.6 mm
$ 37.95
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Intense Yellow Quartz Gem - 13.9ct Fancy Carved Trillion (ID: 470096)

Trillion Yellow Quartz

13.9ct
16.2 x 15.9 mm
$ 48.72
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Light Pineapple Yellow Quartz Gem - 15.3ct Fancy Carved Trillion (ID: 470097)

Trillion Yellow Quartz

15.3ct
16.1 x 16 mm
$ 53.66
Item in Stock
Trillion Shape 16x16 mm Gems
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 Trillion shapes, facet cut and cabochon gems available now in 16 mm x 16 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 meant nor 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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.

Certified Customer Reviews
Overall Rating -> 10 star ratings
Great stones great store!
Posted By Noh in November, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I was very pleased with the selection and clarity of the turquoise. I do wish you would state which mines it came from though.
Posted By Jen's Gems in November, 2019
Source: Bizrate
Overall Rating -> 8 star ratings
prices sound great. First purchase. Hopefully quality matches
Posted By SD in November, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I am designing a sunken treasure "snow globe" as a gift to my wife. Between GemSelect and Etcy I have found everything I need.
Posted By Tim in November, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I have purchased, many times & have always been pleased!
Posted By Jim in November, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
GemSelect has a wide selection of gems with photos of the actual gem that you will be purchasing, not some stock photo. Once a purchase is made, you can print out a certificate of authenticity. You know you are getting the real thing. The pricing is competitive. Their website also has useful information about gems.The website is easy to use. I have made multiple purchases with GemSelect, and I will be back again!
Posted By GeneticBlend in November, 2019
Source: Bizrate
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More Shapes
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  • Pear Checkerboard with Hole
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  • Pear Concave Fantasy Cut
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  • Pear Slice
  • Pencil
  • Pencil Cut
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  • Princess-Cut
  • Rhomb Cabochon
  • Rhomb Checkerboard
  • Rhomb Checkerboard (Double-Sided)
  • Rhomb Facet
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  • Round Buff-Top
  • Round Cabochon
  • Round Carved Cameo
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  • Round Checkerboard (double sided)
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  • Round Drilled Rondelle
  • Round Facet
  • Round Mixed Cut
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  • Round Petal Cut
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  • Spherical
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  • Trapezoid
  • Trapezoid Cabochon
  • Trapezoid Checkerboard
  • Triangle
  • Triangle Cabochon
  • Trillion Cabochon
  • Trillion Checkerboard
  • Trillion Concave Cut
  • Trillion Concave Fantasy Cut
  • Trillion Crystal Cluster
  • Trillion Facet
  • Trillion Rose-Cut
  • Trillion Shape Sugarloaf Cabochon
  • Undrilled Briolette Teardrop
Popular Gemstones
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All Gemstones (144)
A B C D E F G H I J K L M N O P Q R S T V Z
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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