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 |
1.89ct Green Tourmaline, Round, Transparent
7 mm (calibrated)
$ 37.74
1.44ct Yellow Tourmaline, Round, Transparent
7 mm (calibrated)
$ 24.27
1.00ct Pink Tourmaline, Round, Transparent
6 mm (calibrated)
$ 20.65
8.56ct Black Tourmaline, Oval, Opaque
14 x 12 mm (calibrated)
$ 51.36
1.51ct Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 33.22
2.39ct Pink Tourmaline, Oval, Transparent
9 x 7 mm (calibrated)
$ 49.36
10.02ct Black Tourmaline, Emerald Cut, Opaque
15 x 10 mm (calibrated)
$ 60.12
1.71ct Green Tourmaline, Baguette, VS
8 x 5 mm (calibrated)
$ 71.82
0.93ct Yellow Tourmaline, Oval, VVS-VS
7 x 5 mm (calibrated)
$ 44.64
2.77ct Purple Tourmaline, Oval, Transparent
10 x 8 mm (calibrated)
$ 99.72
0.86ct Green Tourmaline, Oval, Transparent
7 x 5 mm (calibrated)
$ 20.64
0.57ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 27.36
1.49ct Green Tourmaline, Round, Transparent
7 mm (calibrated)
$ 30.77
1.51ct Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 31.19
1.60ct Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 33.05
1.42ct Green Tourmaline, Round, Transparent
7 mm (calibrated)
$ 26.10
1.30ct Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 25.96
0.95ct Green Tourmaline, Round, Transparent
6 mm (calibrated)
$ 23.75
1.63ct Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 32.54
0.50ct Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 24.00
1.32ct Green Tourmaline, Oval, VS
9 x 7 mm (calibrated)
$ 221.76
1.11ct Green Tourmaline, Oval, VVS-VS
8 x 5 mm (calibrated)
$ 155.40
1.51ct Pink Tourmaline, Round, Transparent
6.5 mm (calibrated)
$ 37.75
1.03ct Green Tourmaline, Fancy, VS
8 x 6 mm (calibrated)
$ 82.40
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 
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
Great site for finding specific stones and sizes for individual pieces of jewelry
Overall Rating -> 10
My experience has always been fantastic. Today I saved 6 gems to email a customer looking for a particular color blend to fit into an east west setting, so her options were limited, but we found one she wanted, deleted all the others in the cart and order the gem she selected. It was helpful to be able to put them in the cart so I could save them until she selected the one she wanted without having to research all of them again.
Overall Rating -> 10
I can pick and choose from large selection and find just what I need for .y projects, currently my cane.
Overall Rating -> 9 
Very good and simple exchange
Overall Rating -> 10
The stones are very nice.
