Calibrated Amethyst Gemstones
Shop natural calibrated amethyst in precise sizes ideal for standard jewelry settings.
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Bi-color
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Black
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Blue
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Brown
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Golden
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Gray
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Green
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Multicolor
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Orange
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Pink
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Purple
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Red
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Turquoise
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Violet Calibrated Amethyst
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White Calibrated Amethyst
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
2.73ct Violet Amethyst, Trillion, VS
10 x 10 mm (calibrated)
$ 14.96
4.00ctw Violet Amethyst, Oval, VS
6 x 4 mm (calibrated)
$ 21.91
5.33ctw Violet Amethyst, Oval, Transparent
10 x 8 mm (calibrated)
$ 29.20
1.79ct Violet Amethyst, Pear Shape, VS
10 x 7 mm (calibrated)
$ 11.76
2.43ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 13.31
10.49ct Violet Amethyst, Round, VVS-VS
15 mm (calibrated)
$ 73.14
2.50ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 13.70
6.29ct Violet Amethyst, Pear Shape, VVS
15 x 10 mm (calibrated)
$ 48.24
13.63ctw Violet Amethyst, Oval, Transparent
14 x 10 mm (calibrated)
$ 74.67
2.72ctw Violet Amethyst, Heart, VVS-VS
6 x 6 mm (calibrated)
$ 20.86
5.67ct Violet Amethyst, Pear Shape, VS
16 x 12 mm (calibrated)
$ 44.85
13.53ct Violet Amethyst, Cushion, VVS
15 x 15 mm (calibrated)
$ 94.33
14.83ct Violet Amethyst, Cushion, VVS
16 x 16 mm (calibrated)
$ 103.39
1.05ctw Violet Amethyst, Cushion, Transparent
5 x 5 mm (calibrated)
$ 7.32
2.85ct Violet Amethyst, Trillion, VVS-VS
10 x 10 mm (calibrated)
$ 19.87
11.54ct Violet Amethyst, Cushion, VVS
15 x 15 mm (calibrated)
$ 80.46
11.31ct Violet Amethyst, Cushion, VVS-VS
15 x 15 mm (calibrated)
$ 90.12
7.28ct Violet Amethyst, Pear Shape, VS
16 x 12 mm (calibrated)
$ 55.34
12.86ct Violet Amethyst, Round, VVS
16 mm (calibrated)
$ 89.66
1.60ct Violet Amethyst, Trillion, VVS-VS
8 x 8 mm (calibrated)
$ 10.57
1.68ct Violet Amethyst, Pear Shape, VS
10 x 7 mm (calibrated)
$ 11.05
4.45ct Violet Amethyst, Pear Shape, VVS
14 x 10 mm (calibrated)
$ 32.32
2.44ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 13.36
2.35ct Violet Amethyst, Square, VVS
8 x 8 mm (calibrated)
$ 18.72
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Why Buy Calibrated Amethyst from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Precision-Sized Calibrated Amethyst Stones
Our calibrated amethyst gemstones are cut to exact measurements for easy mounting in standard jewelry settings, ensuring consistency across matched designs.
Loose Calibrated Amethyst Online
Browse a wide selection of loose calibrated amethyst stones in popular sizes such as 6 mm, 8 x 6 mm, 10 x 8 mm and more. Each gemstone is photographed individually for accurate online selection.
Standard Sizes for Jewelry Settings
Calibrated amethyst is ideal for ready-made ring mounts, earring settings and pendant designs. Uniform dimensions allow jewelers to work efficiently without custom adjustments.
Faceted and Cabochon Options
Choose from faceted calibrated amethyst for brilliance and sparkle, or smooth cabochons for modern and classic jewelry styles. Available in round, oval, cushion, pear and other popular shapes.
Natural Purple Amethyst
All our calibrated amethyst stones are natural quartz, known for their attractive purple color and good durability (Mohs hardness 7), suitable for everyday jewelry.
Wholesale Calibrated Amethyst
We offer competitive pricing for jewelers and designers who require multiple stones in matching sizes. Calibrated cuts are perfect for production jewelry and repeat designs.
February Birthstone
Amethyst is the traditional February birthstone and is often chosen for meaningful gifts, anniversary jewelry and custom creations.
Why Choose Calibrated Amethyst?
Calibrated stones provide reliable sizing, reduced setting time and consistent results, making them a preferred choice for professional jewelers and custom designers.
Learn more about origins, treatments and care on our Amethyst Information Page.
FAQs
What does calibrated amethyst mean?
Calibrated amethyst refers to gemstones cut to standardized measurements, such as 6 mm round or 8 x 6 mm oval, designed to fit commercial jewelry settings.
Are calibrated amethyst stones natural?
Yes, our calibrated amethyst gemstones are natural. Any treatments are fully disclosed to ensure transparency.
What shapes are available in calibrated amethyst?
Common shapes include round, oval, cushion, pear, emerald cut and more, all cut to precise dimensions for easy mounting.
Is calibrated amethyst suitable for rings?
Yes. With a Mohs hardness of 7, amethyst is durable enough for rings and everyday jewelry when properly set and cared for.
Can I buy matching calibrated amethyst stones?
Yes, calibrated sizes make it easier to select matching stones for earrings, multi-stone rings or production jewelry lines.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
Had a great experience and the prices are great
Overall Rating -> 10
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
Overall Rating -> 10
I was looking for high-quality amethyst on this site, and I was able to compare size, color, and weight in detail before making a purchase.
Overall Rating -> 10
I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!
Overall Rating -> 10
The citrine gems are beautiful. I appreciated that each stone was individually shown on the website so I could see exactly what I was getting. No mystery person selecting random stones for me. The documentation included with each gem was high quality as well. Great price and arrived as expected.
Overall Rating -> 10
My experience was done with ease
