Carat Investments · Retter Inc. · Switzerland
with Investment Gemstones
The leading specialist in the secondary market for colored gemstones. Physical assets — certified, discreet, from Switzerland.
Our conviction
A ruby from the Mogok Valley carries 900 million years of geological history — forged long before any currency, any exchange, any state.
In a world of increasing uncertainty, sophisticated investors seek values that endure. Investment-grade colored gemstones offer exactly that: an asset class beyond capital markets, whose rarity no printing press can alter and whose role as a vessel of wealth is as old as human civilization itself.
The asset class
Why colored gemstones?
Diversification
Low correlation to traditional financial assets.
Appreciation
Rare, high-quality stones achieve significant returns.
Inflation protection
Gemstones retain their value even in economically uncertain times.
Portability
Gemstones store enormous value in a very small physical format. Their compact size facilitates transport, compared to other physical assets such as real estate or gold bars.
Succession planning
Gemstones can serve as heirlooms and be passed down from generation to generation, adding an additional dimension as an investment.
Privacy
Unlike bank accounts or stocks, physical gemstones can be held privately and transferred easily, without leaving traces in public registries.
Return data based on third-party sources (Knight Frank Luxury Investment Index, Citibank Gem Reports). No proprietary return projections.
What sets us apart
Four of nine distinguishing features.
02
Secondary market leadership
Leading specialist for high-quality colored gemstones on the secondary market — with a target discount of 40 % and VAT exemption.
03
In-house laboratory
Authenticity analysis, quality assessment and market value determination — scientific, transparent and independent.
05
Full-service, worry-free
From analysis through valuation to negotiation and auction — complete handling from a single source.
06
Family office approach
Long-term value preservation, risk and return optimisation, tailored strategies for collections and portfolios.
From practice
Three mandates, anonymised.
Your advantage: knowledge, structure, security — all from a single source.
Family office
Germany · CHF 2.4 m
Diversification of generational wealth
A German single-family office was looking for real assets with low correlation to equities and real estate. Outcome: a portfolio of nine rubies and sapphires, certified SSEF/GRS, held in a Swiss bonded warehouse.
Heiress
Switzerland · CHF 14 m achieved
Value made visible
An heiress received a purchase offer of CHF 6 million for her gemstone collection. Thanks to our laboratory analysis, expertise and auction house placement, we achieved a sale price of CHF 14 million. The difference between estimation and real expertise.
Private client
UK · CHF 450k
Single-stone investment with resale option
A British entrepreneur acquired a single emerald from an estate. Four years later, we arranged the resale through an auction-house partner — with a return significantly above the entry cost.
Past mandates are no indicator of future results. Each mandate is structured individually.
Discuss your mandateNext step
Speak with an expert.
No sales pitch. A confidential consultation at eye level — complimentary, discreet, and without obligation.
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