Gemstone guide
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What is Blue Moonstone?
Blue Moonstone is the moonstone variety of feldspar, coloured by adularescence. A guide to the gem, and to buying one well.
About Blue Moonstone
01- Species
- Feldspar
- Variety
- Moonstone
- Hardness (Mohs)
- 6 - 6.5
- Refractive index
- 1.52 - 1.53
- Colour caused by
- Adularescence
Blue Moonstone is a captivating gemstone that enchants with its ethereal glow and captivating play of light. Revered for its unique adularescence, this gem reveals a delicate dance of blue hues across its surface, reminiscent of moonlight shimmering on water. Originating from the storied lands of Africa and India, each piece of Blue Moonstone is a testament to nature's artistry.
Unheated and untouched by human intervention, these gemstones retain their natural allure, making them particularly prized among connoisseurs. The serene palette of blue, white, and grey, combined with clarity grades ranging from opaque to very slightly included, ensures that each stone is a unique masterpiece. Typically cut into smooth cabochons, Blue Moonstone is celebrated for its understated elegance and the soft glow that seems to emanate from within.
Judging quality
02What drives the value
- Size
- Clarity
- Color intensity
- Quality of adularescence
What to watch for when buying
- Overpaying for opaque stones
- Misidentification with other feldspar varieties
Inclusions you may see
- Silk-like inclusions
- Feathery 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 Blue Moonstones come from?
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Our Blue Moonstones originate from Africa and India, regions renowned for producing high-quality specimens.
Are Blue Moonstones treated?
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The Blue Moonstones in our collection are unheated, preserving their natural beauty and intrinsic qualities.
What drives the value of Blue Moonstone?
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The value of Blue Moonstone is primarily driven by its adularescence, colour, and clarity. Stones with a strong blue sheen and minimal inclusions are particularly sought after.
How should I choose a Blue Moonstone?
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When selecting a Blue Moonstone, consider the intensity of its adularescence and the harmony of its base colours. Opt for stones with a captivating play of light and a pleasing balance of blue, white, and grey tones.
Are Blue Moonstones certified?
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Many Blue Moonstones in our collection are accompanied by a laboratory certificate, and certification is available on request for any stone.
Shop
Blue Moonstone
Every stone shows its own price, weight, origin and treatment. Browse our blue moonstone, or contact our team for personal help choosing one.