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 |
13.67ct Pinkish Violet Amethyst, Cushion, VVS
16 x 16 mm (calibrated)
$ 114.83
7.54ctw Medium Violet Amethyst, Oval, Transparent
12 x 8 mm (calibrated)
$ 49.76
4.05ct Deep Violet Amethyst, Pear Shape, VVS
14 x 10 mm (calibrated)
$ 35.45
3.64ctw Pinkish Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 24.02
11.09ct Medium Pink Violet Amethyst, Pear Shape, VVS-VS
18 x 13 mm (calibrated)
$ 95.56
2.01ct Light Violet Amethyst, Square, VVS-VS
8 x 8 mm (calibrated)
$ 19.30
1.71ct Medium Violet Amethyst, Pear Shape, VS
10 x 7 mm (calibrated)
$ 13.55
2.85ct Pinkish Violet Amethyst, Trillion, VVS-VS
10 x 10 mm (calibrated)
$ 27.36
0.98ct Purplish Violet Amethyst, Marquise, VS
10 x 5 mm (calibrated)
$ 7.84
12.37ct Medium Violet Amethyst, Cushion, VVS
15 x 15 mm (calibrated)
$ 103.91
14.83ct Purplish Violet Amethyst, Cushion, VVS
16 x 16 mm (calibrated)
$ 124.57
2.18ct Pinkish Violet Amethyst, Trillion, VVS-VS
9 x 9 mm (calibrated)
$ 20.15
6.50ct Medium Violet Amethyst, Pear Shape, VS
16 x 12 mm (calibrated)
$ 59.54
1.84ct Medium Violet Pink Amethyst, Pear Shape, VVS-VS
10 x 7 mm (calibrated)
$ 14.57
13.06ct Medium Violet Amethyst, Cushion, VS
15 x 15 mm (calibrated)
$ 109.70
3.82ctw Purplish Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 25.21
22.46ct Medium Light Purplish-Violet Amethyst, Emerald Cut, VVS
20 x 15 mm (calibrated)
$ 188.66
9.85ctw Medium Violet Amethyst, Oval, Transparent
12 x 8 mm (calibrated)
$ 65.02
11.54ct Medium Violet Amethyst, Cushion, VVS
15 x 15 mm (calibrated)
$ 96.94
4.40ct Medium Violet Amethyst, Round, VVS-VS
11 mm (calibrated)
$ 34.85
25.83ct Medium Violet Amethyst, Round, VVS
20 mm (calibrated)
$ 216.97
2.84ct Medium Violet Amethyst, Trillion, VS
10 x 10 mm (calibrated)
$ 25.64
17.27ct Medium Violet Amethyst, Oval, IF
20 x 15 mm (calibrated)
$ 138.16
5.96ctw Medium-Light Violet Amethyst, Oval, Transparent
10 x 8 mm (calibrated)
$ 39.34
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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 -> 9 
It was fine . Wish there had been more round stones to select from
Overall Rating -> 10 
Very large selection from affordable to high end I will be coming back to shop again!
Overall Rating -> 9
I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.
Overall Rating -> 10
My experience was done with ease
Overall Rating -> 10
Great site for finding specific stones and sizes for individual pieces of jewelry
Overall Rating -> 10
this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.
