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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Golden 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 |
1.75ct Medium Green Tourmaline, Oval, Transparent
9 x 7 mm (calibrated)
$ 36.14
1.38ct Grayish Green Tourmaline, Cushion, VS
8 x 6 mm (calibrated)
$ 193.20
1.28ct Medium Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 25.56
3.01ctw Medium Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 60.11
1.39ct Lively Green Tourmaline, Oval, VS
8 x 6 mm (calibrated)
$ 233.52
1.26ct Deep Green Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 49.90
1.30ct Fruit Punch Red Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 28.60
2.66ct Sangria Red Tourmaline, Oval, Transparent
10 x 8 mm (calibrated)
$ 54.94
1.60ct Light Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 33.05
1.89ct Reddish Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 25.70
2.47ctw Medium Pink Tourmaline, Round, Transparent
6.5 mm (calibrated)
$ 51.01
1.45ct Medium Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 29.94
3.00ctw Orange Pink Tourmaline, Oval, Transparent
8 x 6 mm (calibrated)
$ 61.96
1.36ct Bubblegum Pink Tourmaline, Round, Transparent
7 mm (calibrated)
$ 28.09
7.07ct Schorl Tourmaline, Emerald Cut, Opaque
13 x 9 mm (calibrated)
$ 42.42
3.41ct Royal Purple Tourmaline, Emerald Cut, SI
9 x 7 mm (calibrated)
$ 153.45
0.59ct Medium Pink Tourmaline, Round, Transparent
5 mm (calibrated)
$ 28.32
1.34ct Yellow Green Tourmaline, Round, Transparent
7 mm (calibrated)
$ 20.87
0.78ct Brick Red Tourmaline, Pear Shape, VVS
8 x 6 mm (calibrated)
$ 39.00
0.85ct Pale Earth Green Tourmaline, Round, Transparent
5.5 mm (calibrated)
$ 17.56
0.66ct Dark Green Tourmaline, Pear Shape, VVS-VS
6 x 6 mm (calibrated)
$ 33.00
0.89ct Medium Orange Tourmaline, Round, Transparent
6 mm (calibrated)
$ 32.04
1.52ct Deep Magenta Tourmaline, Round, Transparent
6.5 mm (calibrated)
$ 31.39
0.67ct Earthy Green Tourmaline, Round, Transparent
5 mm (calibrated)
$ 16.08
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
GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'
Overall Rating -> 10
I am filling a small treasure chest and picked a nice amethyst.
Overall Rating -> 9 
Plan on purchasing on an ongoing basis. So far.....so good....
Overall Rating -> 10
Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!
Overall Rating -> 10
All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.
