Gemstone Library

Know Your Gemstones

Comprehensive, expert-written guides to every gemstone Sri Lanka produces. What to look for, what to avoid, and what makes each stone valuable — written by people who handle these gems every day.

Featured Guides

In-Depth Gemstone Guides

Blue Sapphire
Most Popular

Blue Sapphire

The Complete Guide to Ceylon Blue Sapphires

Everything you need to know about blue sapphires — colour grades, origins, heated vs unheated, investment value, and how to buy with confidence.

Mineral

Corundum

Hardness

9 / 10

Top Origin

Sri Lanka

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Padparadscha Sapphire
Rarest

Padparadscha Sapphire

The Complete Guide to the Rarest Sapphire

The pink-orange sapphire that defies definition. Explore the colour debate, why Sri Lanka is the original source, and why collectors pay record prices.

Mineral

Corundum

Rarity

Extremely Rare

Origin

Sri Lanka

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Colour-Change

Alexandrite

The Complete Guide to Ceylon Alexandrite

The chameleon gemstone — emerald green in daylight, ruby red under lamplight. Learn what drives the colour change, why Sri Lankan alexandrites are highly regarded in the international market, and how to evaluate quality.

Mineral

Chrysoberyl

Hardness

8.5 / 10

Effect

Colour-Change

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Yellow Sapphire
Pukhraj

Yellow Sapphire

The Complete Guide to Ceylon Yellow Sapphires

The sacred Pukhraj of Vedic astrology and a widely prized yellow sapphire. Sri Lanka is one of the most important sources for fine yellow sapphire — learn about colour, treatments, beryllium diffusion, and Pukhraj criteria.

Mineral

Corundum

Hardness

9 / 10

Vedic Name

Pukhraj

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Pink Sapphire
Rising Star

Pink Sapphire

The Complete Guide to Ceylon Pink Sapphires

The romantic corundum, coloured pink by chromium. Ceylon pinks range from delicate baby pink to vivid hot pink — and sit on the famous pink/ruby debate. Learn about the classification boundary, colour range, treatments, and why pink sapphire engagement rings are surging.

Mineral

Corundum

Hardness

9 / 10

Origin

Sri Lanka

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White Sapphire
Diamond Alternative

White Sapphire

The Complete Guide to Ceylon White Sapphires

The colourless variety of corundum — a durable, brilliant, diamond-like alternative and, in Vedic astrology, an accepted substitute for diamond (Heera) as the Venus gem. Learn why Ceylon is the top source and how to evaluate colourless corundum quality.

Mineral

Corundum

Hardness

9 / 10

Origin

Sri Lanka

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Bi-Colour Sapphire
Two Colours, One Stone

Bi-Colour Sapphire

The Complete Guide to Ceylon Bi-Colour Sapphires

A single natural corundum crystal showing two distinct colours in one stone — most often blue and yellow, or pink and orange — the result of colour zoning during formation. Sri Lanka is a leading source. Learn how bi-colour sapphires form, why every stone is unique, and how skilled cutting turns the zoning into the design.

Mineral

Corundum

Hardness

9 / 10

Origin

Sri Lanka

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The Full Library

Every Ceylon Gemstone Species

Comprehensive guides for every major gemstone species found in Sri Lanka — from sapphires and rubies to cat's eye, spinel, garnet, and zircon. Each guide covers quality factors, treatments, astrological significance, and buying advice.

Corundum family

Chrysoberyl family

Spinel family

Garnet family

Zircon family

Looking for a specific stone?

Our collection includes gemstones beyond what's listed here. Tell us what you're looking for — species, colour, carat, treatment, certification, budget — and a founder will reply within 24 hours with matching certified options sourced directly from Sri Lanka.

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