OUR STONES

Loose Gemstones

We stock a wide and ever-changing selection of all natural, precious and semi-precious stones, specialising in Ruby, Sapphire and Emerald. Offering a broad range of shapes and sizes from smaller, calibrated/melee stock, to larger, single stones and matching pairs – with various styles and price points, we have options to suit both fine and more everyday jewellery designs.

At CR Gems, it all starts with careful selection. Every one of our gemstones is still hand-selected by our founder, whose expert eye and decades of experience ensure each stone meets our high standards. With a deep understanding of the trade and a passion for coloured gems, each stone isselected based on its colour, cut, clarity and overall character – always with the needs of jewellers and designers in mind.

See here to view our latest stock

Sourcing

Our stones are sourced from trusted suppliers in key locations including Sri Lanka, India, Thailand, Colombia, Brazil, Zambia and Madagascar — regions known for producing some of the best coloured gems in the world. We work directly with dealers we know and trust, who we’ve dealt with for many years, ensuring traceability and fair practices wherever possible.

Certifications

We aim to GIA certify the vast majority of our gemstones over 1.5ct to ensure full transparency and peace of mind – being one of the largest suppliers of GIA Certified loose gemstones. For some of our stock, including much of our finished jewellery, these are WGI Certified, complete with a full Jewellery Report. Stone Certifications confirm details such as origin and any treatments (like heating or oiling), helping you build trust and support your sale with your clients. All certified stock comes with the official printed certificate, including the reference number, which can be used to download the digital copy from the relevant certification websites.

Manufactured Jewellery

Alongside loose gemstones, we also manufacture our own jewellery, offering both mounted and semi-mounted pieces at wholesale prices – ideal for ready-to-sell stock, or adaptable custom orders. Our jewellery features our premium-coloured gemstones, set alongside natural diamonds and crafted in precious metals, with options including 9K and 18K white and yellow gold, as well as platinum.

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COLOUR INTENSITY SCALE


Faint

Only the faintest trace of colour, often appearing pastel or near-colourless, with a soft and delicate look.

Pale

Soft, pastel hues with low saturation and tone; colours appear delicate and almost washed out.

Light

Noticeable but gentle colour, brighter than pale, yet still soft and airy in appearance.

Medium Light

Clear and lively colour that is stronger than light but not yet intense; retains brightness and openness.

Medium Intense

Displays balanced saturation with rich colour tones that remain bright and lively without appearing dark.

Vivid

Maximum saturation without heaviness; colours appear bright, pure, and strikingly intense.

Deep

Strong and dark in tone, producing rich, dramatic hues though with reduced brightness.

Dark

Very strong tone where colour appears heavy or inky, vibrancy is reduced and brilliance often masked.

Note: Industry trade names such as “pigeon blood” ruby or “cornflower blue” sapphire fall within these categories, but are not shown separately here. A stone-specific guide to help place these follows below.

Colour intensity scale
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LUSTRE/BRILLIANCE SCALE


Top

Exceptional shine and bright reflections, showing strong light return and a crisp sparkle.

Medium

Noticeable brightness but with softer reflections and a more subtle overall glow.

Low

Soft and muted appearance, often near-opaque looking with minimal internal light.


Lustre scale
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CLARITY SCALE


Eye Clean

No visible inclusions to the naked eye.

Visible Inclusions

Minor inclusions can be seen without magnification but don’t significantly affect beauty.

Included

Obvious inclusions visible to the eye, often affecting brilliance.


Clarity scale
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CUT QUALITY SCALE


Excellent

Precise and symmetrical with well-defined facets and a clean, polished finish.

Good

Generally well-cut with fair symmetry and proportions, may show soft facet definition.

Poor

Irregular or uneven cut with softened edges or visible imperfections.


Cut scale
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DEALER OFFERS - HOW IT WORKS


Our Dealer Offers section features a curated selection of our most recent stock, available exclusively for clients looking to purchase multiple stones at a discounted rate.

This section is designed to mirror the traditional experience of buying stones “on the table”, where stronger pricing is offered in return for quicker decision-making and commitment.

How it works:

To qualify for the 15.0% Dealer Offer discount:

Please note:
As this is a discounted pricing structure, invoices are expected to be settled promptly once a purchase decision is made.

This offers a flexible way to review stones risk-free, while benefiting from significantly improved pricing when purchasing in volume.