Review.
Access.
Training.
The Diamond Dealer Program:
Coloured Gemstones for Diamond Dealers
Your expertise, extended to coloured gemstones
You know stones, clients and the trade.
Coloured gemstones follow different rules: there is no universal grading system, value depends on origin and treatment, and the finest material rarely reaches the open market.
Our Diamond Dealer Program gives you a partner who knows this terrain, so you can add coloured stones to your business with the same confidence you bring to diamonds.
What the program offers:
Coloured gemstones follow different rules: there is no universal grading system, value depends on origin and treatment, and the finest material rarely reaches the open market.
Our Diamond Dealer Program gives you a partner who knows this terrain, so you can add coloured stones to your business with the same confidence you bring to diamonds.
What the program offers:
Buy with certainty
We review every potential purchase with you before you commit: quality, origin, treatment and price.
Direct access
Our network of cutters, dealers and labs, built over 20 years in Asia and Europe, is at your disposal.
Know-how for your team
We train your staff to assess coloured gemstones themselves.
Experience on your side
We know where the risks lie in the coloured stone market and how to manage them.
How the Program Works
Every program is tailored to your business: duration, format and pace are agreed individually.
Analysis
Your clients, price points, current range and goals
Strategy
Which stones, which budget, which suppliers
First purchases
We source and review options with you – you decide
Expertise
Training for your team, at your premises or in Idar-Oberstein
Diamonds and coloured gemstones: what changes
Your experience with diamonds is a strong foundation. These are the differences that matter most when you add coloured stones to your range.
Why work with Noble Facets
We measure our work by the value it creates for your business.
- IndependentNot tied to any mine, supplier or lab – our advice serves only you.
- ExperienceMore than 20 years in the coloured gemstone and jewellery trade.
- Personal SupportQuick, direct answers from the founder herself.
- Expert NetworkCutters, labs and suppliers across four continents.
- No Inventory ConflictWe advise you without any pressure to move our own inventory.
- International Market ConnectionsRooted in Idar-Oberstein, connected through two decades in Greater China – with contacts across China and all of Asia.
FAQ
No. Your experience with diamonds is a good basis. We build on it and train your team in what is specific to coloured gemstones.
That depends on your goals and your starting point. Duration, format and pace are agreed individually.
At your premises, in Idar-Oberstein or a combination of both – whatever suits your team.
We decide that together, based on what your clients ask for and the price points you work in.
Of course. Our network complements yours; it does not replace it.
That depends on the stone and its value. We advise you which identification, treatment and origin reports make sense for each purchase.
Fees depend on the scope of your program and are quoted on request after a free initial consultation.
Book a free initial consultation and tell us which coloured gemstones your clients ask for.
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Connect with our experts
Please feel free to reach out and contact us for any inquiries or assistance you may need
Contact
+49 151 54926966 tatjana.li@noblefacets.com
Address
Noble Facets Platform GmbH
Tiefensteiner Str. 407
55743 Idar-Oberstein
Germany
Tiefensteiner Str. 407
55743 Idar-Oberstein
Germany
Directions
We are located directly on the German Gemstone Route
© 2026 Noble Facets Platform GmbH