Calibrated Tourmaline Gemstones
Browse natural calibrated tourmaline gemstones in precise sizes, perfect for professional jewelry settings and custom designs.
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Bi-color Calibrated Tourmaline
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Black Calibrated Tourmaline
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Blue Calibrated Tourmaline
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Brown Calibrated Tourmaline
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Gray Calibrated Tourmaline
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Green Calibrated Tourmaline
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Multicolor Calibrated Tourmaline
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Orange Calibrated Tourmaline
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Pink Calibrated Tourmaline
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Purple Calibrated Tourmaline
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Red Calibrated Tourmaline
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Turquoise Calibrated Tourmaline
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Violet
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White
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Yellow Calibrated Tourmaline
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
0.65ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 31.20
1.15ct Yellow Tourmaline, Round, Transparent
6.5 mm (calibrated)
$ 25.30
1.12ct Green Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 40.32
0.89ct Yellow Tourmaline, Round, Transparent
6 mm (calibrated)
$ 32.04
1.26ct Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 25.16
2.19ct Red Tourmaline, Oval, Transparent
9 x 7 mm (calibrated)
$ 45.23
1.27ct Red Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 26.23
3.60ct Yellow Tourmaline, Cushion, Transparent
10 x 8 mm (calibrated)
$ 47.52
1.99ct Green Tourmaline, Oval, Transparent
9 x 7 mm (calibrated)
$ 41.10
1.89ct Multicolor Tourmaline, Round, Transparent
7 mm (calibrated)
$ 37.74
2.62ctw Pink Tourmaline, Round, Transparent
6.5 mm (calibrated)
$ 54.11
6.24ct Multicolor Tourmaline, Flower Cut, Transparent
14 x 14 mm (calibrated)
$ 146.54
1.67ctw Brown Tourmaline, Oval, VS
8 x 5 mm (calibrated)
$ 100.02
1.51ct Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 31.19
2.66ct Pink Tourmaline, Oval, VVS-VS
8 x 8 mm (calibrated)
$ 287.28
1.31ct Green Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 16.77
1.96ct Pink Tourmaline, Oval, Transparent
9 x 7 mm (calibrated)
$ 40.48
0.59ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 28.32
1.83ct Yellow Tourmaline, Round, Transparent
7 mm (calibrated)
$ 33.65
1.22ct Green Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 25.20
6.77ct Black Tourmaline, Emerald Cut, Opaque
13 x 9 mm (calibrated)
$ 40.62
0.62ct Yellow Tourmaline, Round, Transparent
5 mm (calibrated)
$ 29.76
1.56ct Yellow Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 56.16
11.70ct Black Tourmaline, Cushion, Opaque
14 x 12 mm (calibrated)
$ 41.77
Why Buy Calibrated Tourmaline 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
Natural Calibrated Tourmaline Gemstones
Our natural calibrated tourmaline gemstones are carefully selected for color, clarity, and precision sizing, making them ideal for jewelry designs that require consistency and accuracy.
Loose Calibrated Tourmaline Online
Shop loose calibrated tourmaline online at GemSelect with confidence. Choose from a wide variety of colors, shapes, and exact measurements suitable for standard jewelry settings.
Tourmaline for Jewelry Mountings
Calibrated tourmaline stones are cut to fit common jewelry mountings, helping jewelers save time and achieve professional, balanced designs for rings, earrings, and pendants.
Multi-Color Tourmaline Selection
Tourmaline is famous for its wide color range, from green and pink to blue and bi-color varieties. Calibrated sizing lets you mix colors easily while keeping design symmetry.
Faceted Calibrated Tourmaline
Faceted calibrated tourmaline offers excellent brilliance and sparkle. Popular shapes include oval, round, cushion, and pear cuts that work well in ready-made settings.
Matching Calibrated Tourmaline Pairs
Matching calibrated pairs are perfect for earrings or symmetrical jewelry projects, ensuring both stones share similar size, shape, and visual balance.
Wholesale Calibrated Tourmaline Stones
Buy wholesale calibrated tourmaline gemstones for jewelry production or retail collections. Consistent sizing makes bulk purchasing efficient and reliable for manufacturers.
Durability and Everyday Wear
Tourmaline has a Mohs hardness of 7 to 7.5, making it suitable for everyday jewelry when properly set and cared for, offering both beauty and practicality.
Precise Sizes for Easy Setting
Calibrated tourmaline gemstones are available in standard sizes such as 5 mm, 6 mm, or 8 x 6 mm, helping jewelers fit stones quickly into pre-made mountings.
Learn more about the history, varieties, and properties of tourmaline on our Tourmaline Information Page.
FAQs
What does calibrated tourmaline mean?
Calibrated tourmaline refers to gemstones cut to precise standard dimensions so they fit common jewelry settings without custom modification.
Are GemSelect calibrated tourmaline gemstones natural?
Yes, all tourmaline gemstones are natural, and any treatments are clearly disclosed to ensure full transparency for buyers.
Why choose calibrated gemstones for jewelry making?
Calibrated gemstones simplify jewelry production because they fit standardized mountings, reducing labor time and improving consistency across designs.
What colors are available in calibrated tourmaline?
Tourmaline comes in many colors including green, pink, blue, yellow, and bi-color varieties, offering flexible design possibilities.
Can I buy calibrated tourmaline in matching pairs?
Yes, matching pairs are available and are ideal for earrings or designs requiring symmetry in size, shape, and color.
What sizes are common for calibrated tourmaline?
Common sizes include rounds like 4 mm to 7 mm and ovals such as 7 x 5 mm or 8 x 6 mm, making them easy to use in standard settings.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
Great experience. I can't wait to explore on the website further.
Overall Rating -> 10
I love the products. I've bought them as gifts and people love my gifts
Overall Rating -> 10
GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!
Overall Rating -> 10
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
Overall Rating -> 10
It's mostly good, only some item's are easier to find through the search than the menu
Overall Rating -> 9 
Very easy to navigate with a great selection.
