Gemstone guide
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What is Demantoid Garnet?
Demantoid Garnet is the demantoid variety of garnet, coloured by chromium. A guide to the gem, and to buying one well.
About Demantoid Garnet
01- Species
- Garnet
- Variety
- Demantoid
- Hardness (Mohs)
- 7
- Refractive index
- 1.74
- Colour caused by
- Chromium
Demantoid Garnet, a captivating member of the garnet family, is celebrated for its exceptional brilliance and vibrant hues. Originating from the rich mineral deposits of Namibia, these gemstones are cherished for their stunning green, brown, and yellow tones, with some exhibiting a remarkable colour change phenomenon. The allure of Demantoid Garnet is further enhanced by its rarity and the meticulous craftsmanship evident in its brilliant diamond and scissor cuts.
Unheated and natural, each Demantoid Garnet is a testament to the Earth's artistry, offering a unique blend of clarity and colour. Many of these gems are accompanied by a laboratory certificate from esteemed institutions such as GIA and GRS, ensuring their authenticity and quality. Prices for these exquisite stones begin from around $68 per carat, reflecting their desirability and the skilled artistry involved in their creation.
Judging quality
02What drives the value
- Rich green color
- High clarity
- Unique color change properties
- Size and carat weight
What to watch for when buying
- Overlooking the presence of inclusions
- Assuming all Demantoid Garnets exhibit color change
- Not verifying the origin or treatment
Inclusions you may see
- Needle-like inclusions (horsetail inclusions)
- Crystal inclusions
Origin, treatment and trade names
03Where it comes from
TreatmentAs disclosed for the stones we sell; every listing states its own.
Trade names
From our stock
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From the journal
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Frequently Asked Questions
06Where do Demantoid Garnets come from?
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Our Demantoid Garnets originate from Namibia, a region renowned for producing gemstones of exceptional quality and vibrant colour.
Are Demantoid Garnets treated?
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The Demantoid Garnets we offer are unheated, showcasing their natural beauty without any enhancement.
What determines the value of a Demantoid Garnet?
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The value of a Demantoid Garnet is driven by its colour, clarity, cut, and carat weight, with the most vibrant and clear stones commanding higher prices.
How should I choose a Demantoid Garnet?
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When selecting a Demantoid Garnet, consider the intensity of its colour, the clarity, and the quality of the cut. Each stone is unique, so personal preference plays a significant role.
Are Demantoid Garnets certified?
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Many Demantoid Garnets are accompanied by a laboratory certificate from GIA or GRS. Certification is available on request for any stone.
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Demantoid Garnet
Every stone shows its own price, weight, origin and treatment. Browse our demantoid garnet, or contact our team for personal help choosing one.