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 |
2.72ct Violet Amethyst, Trillion, VS
10 x 10 mm (calibrated)
$ 14.90
12.52ct Violet Amethyst, Cushion, VVS-VS
15 x 15 mm (calibrated)
$ 87.29
6.83ct Violet Amethyst, Pear Shape, VVS-VS
16 x 12 mm (calibrated)
$ 52.38
14.45ct Violet Amethyst, Oval, IF
20 x 15 mm (calibrated)
$ 95.95
2.40ct Violet Amethyst, Emerald Cut, VS
9 x 7 mm (calibrated)
$ 14.44
5.30ct Violet Amethyst, Pear Shape, VS
15 x 10 mm (calibrated)
$ 40.65
6.38ctw Violet Amethyst, Oval, Transparent
12 x 8 mm (calibrated)
$ 34.95
0.28ct Violet Amethyst, Emerald Cut, VS-SI
5 x 3 mm (calibrated)
$ 1.63
3.89ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 21.31
11.17ctw Violet Amethyst, Oval, Transparent
12 x 10 mm (calibrated)
$ 61.20
3.88ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 21.26
3.16ct Violet Amethyst, Round, VVS-VS
10 mm (calibrated)
$ 24.24
3.05ct Violet Amethyst, Heart, VVS-VS
10 x 10 mm (calibrated)
$ 23.40
7.53ctw Violet Amethyst, Oval, Transparent
11 x 9 mm (calibrated)
$ 29.78
3.04ct Violet Amethyst, Trillion, VS
10 x 10 mm (calibrated)
$ 23.31
10.26ctw Violet Amethyst, Oval, Transparent
14 x 10 mm (calibrated)
$ 40.58
4.03ct Violet Amethyst, Pear Shape, VVS
14 x 10 mm (calibrated)
$ 28.10
26.41ct Violet Amethyst, Round, VVS
20 mm (calibrated)
$ 184.13
0.77ct Violet Amethyst, Cushion, VVS
7 x 5 mm (calibrated)
$ 5.37
2.49ctw Violet Amethyst, Oval, VVS-VS
6 x 4 mm (calibrated)
$ 13.65
2.14ct Violet Amethyst, Trillion, VVS-VS
9 x 9 mm (calibrated)
$ 16.42
6.78ct Violet Amethyst, Pear Shape, VS
16 x 12 mm (calibrated)
$ 52.00
2.98ct Violet Amethyst, Trillion, VVS-VS
10 x 10 mm (calibrated)
$ 22.33
2.90ctw Violet Amethyst, Heart, VVS-VS
6 x 6 mm (calibrated)
$ 22.24
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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 
The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.
Overall Rating -> 10 
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
Overall Rating -> 8 
Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.
Overall Rating -> 9
Ita's a pretty good and simple way to find gems that youa're looking for amazing selection
Overall Rating -> 10
Good, hope gem quality is good and genuine
Overall Rating -> 10
This is the first time I have used this site. I was dissatisfied with the quality of gems and supplies elsewhere and decided to try GemSelect. They are awesome! I was thrilled to see the variety and the great web performance. There was the ability to search for information as well as gems. Things like the clarity rating system and caret weight of the gems. I have always loved making things and I have just started to make jewelry as a business. However I have never made a ring before and have always wanted to. On GemSelect I was able to find good quality gems to use in my creations. I am so glad the website is so easy to use. Thank you GemSelect.
