Gemstone guide
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What is Green Tourmaline?
Green Tourmaline is the elbaite variety of tourmaline, coloured by iron and manganese. A guide to the gem, and to buying one well.
About Green Tourmaline
01- Species
- Tourmaline
- Variety
- Elbaite
- Hardness (Mohs)
- 7 - 7.5
- Refractive index
- 1.61 - 1.64
- Colour caused by
- Iron and manganese
Green Tourmaline, a captivating member of the tourmaline family, is celebrated for its lush and verdant hues, reminiscent of the most vibrant forests. This exquisite gemstone is found in regions such as Africa, Congo, Mozambique, and Nigeria, each contributing to its unique allure. Its colour, ranging from deep forest green to vivid grassy tones, is a primary driver of its value, alongside clarity and cut. Green Tourmalines are available in a spectrum of clarity grades from internally flawless (IF) to slightly included (SI-2), with cuts that enhance their natural brilliance, including Fine Step, Emerald, and Modified Brilliant cuts.
While some Green Tourmalines are unheated, others undergo a gentle heating process to enhance their natural beauty. Many of our stones are accompanied by a laboratory certificate from esteemed institutions like GIA, GIT, or GRS, and certification is available upon request for any stone. The price of Green Tourmaline starts from around $57 per carat, reflecting its desirability and rarity. Each stone is a testament to nature's artistry, promising a unique addition to any jewellery collection.
Judging quality
02What drives the value
- Color intensity
- Clarity
- Cut quality
What to watch for when buying
- Overlooking the impact of inclusions on value
- Confusing with other green gemstones
Inclusions you may see
- Natural inclusions such as needles or color zoning
Origin, treatment and trade names
03Where it comes from
TreatmentAs disclosed for the stones we sell; every listing states its own.
Trade names
Price per carat
04- Typical price
- $180 per carat
- Most stones
- $104–$287 per carat
- Based on
- 261 stones in our stock, updated weekly. Green Tourmaline prices by carat size →
From our stock
05From the journal
06Frequently Asked Questions
07Where do Green Tourmalines originate?
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Green Tourmalines in our collection originate from Africa, including specific regions such as Congo, Mozambique, and Nigeria.
Are Green Tourmalines treated?
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Some Green Tourmalines are unheated, while others may undergo a gentle heating process to enhance their natural colour and clarity.
What drives the value of Green Tourmaline?
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The value of Green Tourmaline is driven by its colour, clarity, and cut. Rich, vivid greens and high clarity grades, such as IF and VVS, are particularly prized.
How should I choose a Green Tourmaline?
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When choosing a Green Tourmaline, consider the intensity of its green colour, the clarity grade, and the quality of the cut. Each of these factors contributes to the gemstone's overall beauty and allure.
Is certification available for Green Tourmalines?
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Many Green Tourmalines are accompanied by a certificate from labs such as GIA, GIT, or GRS. Certification is available upon request for any stone.
Shop
Green Tourmaline
Every stone shows its own price, weight, origin and treatment. Browse our green tourmaline, or contact our team for personal help choosing one.





