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Precious stones for banks & family offices

We help financial institutions and their clients buy, value, hold and resell natural precious stones, with the independence of a family business and direct access to the source.

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Portfolio management

We build and look after portfolios of natural precious stones for banks, family offices and private investors. Precious stones are a safe haven rather than a bet on performance: tangible assets that preserve wealth over the long term. In the past we have built portfolios worth up to USD 50 million.

Setting the frame: together we agree on the budget, the time horizon and the stones that suit them.
Selection and purchase: we choose each stone ourselves and buy it directly from our partners at the source, at the right price.
Certification and valuation: every stone comes with a certificate from an internationally recognised laboratory and our own written valuation.
Safekeeping and follow-up: we revalue the portfolio regularly and advise you on safekeeping and insurance.
Resale: when the time comes, we find the right buyer, auction or professional platform.

Discuss a portfolio

Ethics & due diligence

For institutions, due diligence matters as much as the stones themselves. We check buyers and sellers before every transaction and comply fully with anti-money-laundering laws.

Read our commitments

What we offer institutions

Precious stones can preserve and pass on wealth, provided they are bought and documented with care. Alongside portfolio management, institutions come to us for three things.

Independent valuations

Written valuations of stones and jewellery for insurance, reporting or resale.

About our appraisals

Inventories for inheritance

Photographs, descriptions and a value for every piece, for heirs, notaries and trustees.

About our inventories

Reselling collections

Finding the right buyer, auction or professional platform, on commission.

About resale

A ruby surrounded by diamonds, set in a ring

Case study

Multi-million portfolios of precious stones

Building portfolios of precious stones for financial institutions is a regular part of our work. For one institution, between 2013 and 2018, we selected and bought stones worth tens of millions of dollars as a long-term store of value, and later handled the resale of the collection.

Years: 2013 to 2018
Value: Tens of millions of USD
Our role: Selection, purchase and resale of the collection

How we work

Every stone we recommend goes through the same steps.

Selection at the source

We buy directly from trusted partners in the countries that produce the finest stones.

Gemmological examination

We examine and value each stone in our Geneva office before we propose it to you.

Laboratory certificates

Certificates from SSEF, Gübelin, GRS or GIA confirm the identity, origin and treatment of each stone.

Documentation & valuation

A complete file for each stone, with the option of a secure digital record through Toto Finance.

Our own analysis of public auction results shows which factors drive the value of a stone, and how prices have moved since 2010. See our market findings

Chart: quality-adjusted price index of fine sapphires at public auction, 2010 to 2025

Reserved for bankers and wealth managers

Gemstones as Investments & Safe-Haven Assets

A two-hour seminar in Geneva on how the market works, what makes a stone investable, and how to document, value and pass it on.

When: Last Tuesday of each month, 12:00–14:00
Next date: –
Group: 5 people max

For advisors

A one-page presentation for your clients

Our services for institutions, how we work, our experience and our ethics commitments on a single A4 page, ready to pass on to your clients.

Format: PDF, 1 page
Language: English