LA GEM · Gemstones
Rare Natural Gemstones
A working selection of the natural coloured gemstones currently in our Prague stock, hand-selected by our GIA-certified specialist for colour, character and origin. Most of our sourcing, however, happens after we meet you: we search the world for the exact stone your project deserves.
Understanding gemstone quality
High Jewellery gemstones vs. mass-market calibrated stones
Most jewellery on the market is set with calibrated gemstones, mass-produced to standard sizes (a "6mm round", an "8x6 oval") so factories can set them into identical, repeatable mountings at scale. They are chosen for uniformity and low cost, not character, and are very often low-quality stones that have been heavily treated: fracture-filled with resin or glass, dyed or artificially coloured, or heat- and diffusion-treated to fake a colour nature never gave them. A High Jewellery gemstone is the opposite: a unique, often unrepeatable stone selected first for its colour, brilliance, clarity and provenance, the design is then built around it, never the other way round.
Chosen for character, not size
A High Jewellery stone is judged on its own colour, cut and life, never forced into a standard calibrated dimension.
Verified, not assumed
Origin, treatment and quality are independently assessed by our GIA-certified specialist, not taken on a supplier's word.
Rare by nature
Exceptional colour and clarity in nature are genuinely uncommon, a fine natural stone cannot be reordered once it is gone.
Fairly priced
Because we buy direct from origin and the world's leading cutting houses, you pay for the stone's true quality, not layers of intermediaries.
How we source
Prague stock, and a world of suppliers behind it
The gemstones below reflect what we currently hold in our Prague stock, a working selection ready to view or use right away. But this catalogue is only a starting point. For most commissions, we source specifically for you: travelling to countries of origin and working with the finest cutting houses in Bangkok and across the world, drawing on a long-built network of trusted suppliers on every continent.
Our mission is simple: to find the single best proposition for you, whatever your brief, budget or timeline. That search always begins with a conversation.
Every stone below is currently held in our Prague stock and available to view now. Looking for something specific? We source directly from origin and from the world's leading cutting houses.
In stock, Prague
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Heart 1 Piece Superb Luster Natural Intense Golden Pink Morganite
4 538 Kč
In stock, Prague
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Blue Sapphires
5 360 Kč
In stock, Prague
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Blue Sapphire
96 740 Kč
In stock, Prague
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Blue Tanzanite
1 856 Kč
In stock, Prague
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Orange Citrine
196 Kč
In stock, Prague
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Natural Spinel (Peach)
1 880 Kč
In stock, Prague
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Natural Pink Tourmaline
9 341 Kč
In stock, Prague
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Pink Spinel
684 Kč
In stock, Prague
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Sparkling Natural Intense Pink Tourmaline
9 075 Kč
In stock, Prague
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Dark Blue Tourmaline
991 Kč
In stock, Prague
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Paraíba Tourmaline
62 436 Kč
In stock, Prague
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Golden Yellow Beryl “Heliodor”
1 331 Kč
In stock, Prague
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Blue-Green Tourmaline
1 784 Kč
In stock, Prague
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Purplish-Red Spinel
610 Kč
In stock, Prague
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Green Garnet
3 298 Kč
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Yellow Beryl Cushion
2 105 Kč
No stones match these filters yet, tell us what you're looking for and we will source it for you.
GIA-certified selection
Every stone is assessed and chosen by our GIA-certified specialist, never bought on trust alone.
From origin to the world's finest cutters
We buy directly at source and work with leading cutting houses in Bangkok and across the globe.
A global supplier network
Years of relationships with trusted suppliers worldwide mean access far beyond what's in stock.
Sourced to your brief
Our mission is to find the single best proposition for you, whatever your vision, budget or timeline.
How we find your stone
Beyond the stock list
Tell us your brief
Colour, character, budget, purpose, an honest conversation with our specialist is always the first step.
We search our network
From origin markets to leading cutting houses in Bangkok and worldwide, we call on a global list of trusted suppliers.
You choose, with confidence
We present verified options with full gemmological documentation, so you decide with complete clarity.
Good to know
Frequently asked
What's the difference between these stones and calibrated gemstones?
Calibrated stones are mass-produced to standard sizes for factory-made jewellery. Every stone here is a unique natural gemstone, chosen individually for its colour, cut and character, no two are alike.
Is this catalogue everything you have access to?
No, it's our current Prague stock. Most commissions involve us sourcing specifically for you, direct from origin and from cutting houses in Bangkok and all over the world, through our global supplier network.
Can I request a stone that isn't shown here?
Yes, and this is in fact how most projects begin. Tell us what you're looking for and we will search on your behalf.
Do the stones come with certification?
Yes. Natural gemstones are accompanied by the appropriate gemmological documentation confirming origin and treatment where relevant.
Can you set a stone into a finished piece for me?
Absolutely, every gemstone here can become the heart of a bespoke creation, designed and handcrafted around it.
Begin Your Commission
Looking for a specific stone?
Most of our best gemstones never make it into a catalogue, we find them for you. Tell us your vision and let our specialist search the world on your behalf.