Gemstones as an Investment
Rubies, sapphires and emeralds in investment quality. Natural, with an international lab certificate. You tell us what you have in mind, the expert at our cooperation partner in Vienna puts together stones that fit.
Gemstones as a tangible asset: why the smallest
vault in the world fits in your hand
Gold sits in a vault. Stocks sit in a brokerage account. A gemstone sits in a paper envelope that fits in any pocket.
Coloured gemstones are the oldest store of value humanity knows. For thousands of years they have held wealth in the smallest possible space. Around 1 kilogram of untreated, certified rubies sold at Christie's and Sotheby's between 2007 and 2016 for a combined total of about 374 million USD.
Then there is scarcity. Only around 3 % of the gemstones found still have their natural colour when they leave the mine. The rest is heated, filled or irradiated. The great classic mines in Burma and Colombia are considered largely exhausted.
And the market is free. No monopoly sets the price of coloured gemstones. Their value barely depends on stock markets, interest rates or banks.
Ruby, sapphire, emerald:
which gemstones work as an investment
Three stones have carried the market for centuries: ruby, sapphire and emerald. In investment quality they are rare, small and recognised worldwide. Fancy coloured diamonds and rarities come as an addition once the core is in place.
Every stone we recommend carries a certificate from an independent lab. Which lab depends on the value of the stone: a report from GRS, Gübelin or SSEF alone costs 450 to 1,000 EUR and only pays off for larger stones. A heated or filled stone can be worth a fraction, even if it looks the same.
- Ruby. The rarest of the major gemstones in fine quality, rarer than diamond. Today mostly from Mozambique, the classics from Burma. The price per carat depends on colour, clarity, weight, origin and above all on whether the stone is untreated. Investment quality currently starts at around 5,000 EUR net per carat.
- Sapphire. Royal blue from Sri Lanka, Pakistan or Madagascar, rarely from Burma or Kashmir. The price per carat rises with colour intensity and size. The investment class starts at around 1 carat.
- Emerald. Small, clean stones with very little oil (minor). Entry-level emeralds with no oil at all do not exist. Zambia supplies most investment stones today, Colombia remains the classic address.
- Fancy coloured diamonds and rarities. As an addition once your core of ruby, sapphire and emerald is in place.
- Untreated only, certified only. Treated stones are jewellery, not an investment.

Photo: The Natural Gem
Ideal for people who:
- already hold stocks, real estate or precious metals and want to diversify
- want to build wealth over the long term, not speculate
- want to own something small, portable and recognised worldwide
- want to pass wealth on discreetly to the next generation
- want a tangible asset without upkeep: no climate control like art, no maintenance like classic cars
- would like to wear their investment as jewellery from time to time
What an investment stone costs:
sapphire and emerald from 3,500 EUR, ruby from 5,000 EUR per carat
The price comes from colour, clarity, weight, origin and treatment. The expert at our cooperation partner in Vienna shows you real stones with certificate and price, matched to your budget.
Sapphire
Ruby
Rarest stoneEmerald
All prices include the certificate; ruby net per carat. For orders under 25,000 EUR shipping and customs clearance are charged, inside and outside the EU. VAT depends on the place of delivery; with storage in Singapore it does not apply.
Optional: store your gemstones in Singapore,
free of VAT in the freeport
You can keep your stones yourself. Or you store them where wealth has been kept safely for decades: in Singapore.
Custody runs through our own company, Patronus Custody Pte. Ltd. Your stones are held in The Reserve, the high-security facility of The Safe House, with which we have an official storage agreement. Every stone is recorded individually, sealed in a security bag with its own serial number and documented with photos and a custody statement. Insured through The Safe House.
In the bonded freeport, no VAT or GST is charged when you buy and while your stones are stored. Only when you import them into your country does that country's import tax apply. 1 % per year for storage and insurance, viewing and collection at any time by appointment. For shipping to Singapore, our cooperation partner charges a service fee of 250 EUR per shipment, regardless of the number of stones.
Tell us what you have in mind. Our expert gets back to you with a selection.
5 short questions plus your contact details. Your request goes straight to our gemstone expert.
Buying gemstones in 5 steps:
from the form to the stone in your hand
Request
You answer 5 questions and leave your contact details.
Selection
Our cooperation partner in Vienna gets in touch and shows you suitable stones with photos, certificates and prices. On request with a 3-day reservation.
Purchase
By bank transfer directly to our cooperation partner in Vienna. The stone becomes your property.
Delivery or storage
Insured to your home; for orders under 25,000 EUR plus shipping and customs clearance. Or to the freeport in Singapore, with a service fee of 250 EUR per shipment.
Hold
You hold your stones for at least 5 years, longer is fine. Selling earlier usually means a loss.
Meet us in person:
the next on-site dates
Small groups and fixed dates. The confirmation of your registration arrives by email right away.
What you get with us:
investment stones the way we buy them ourselves
Untreated only
We recommend natural stones only. Treated stones are jewellery, not an investment.
A lab certificate for every stone
From an independent lab; for larger stones GRS, Gübelin or SSEF. A dealer certificate does not count.
Cooperation partner
Advice and sale are handled by our cooperation partner The Natural Gem GmbH in Vienna, a gemstone dealer with decades of experience.
A selection built around your goal
Single stone or portfolio, by budget and holding period.
Storage as an option
In Singapore, free of VAT, through our own company.
Transparent costs
Prices include the certificate. Shipping, customs clearance and the Singapore service fee are stated before you buy.
What our clients say.
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Gemstones as an investment: the key answers.
Are gemstones a good investment?
For part of your wealth: yes. Natural, certified coloured gemstones are scarce, small and recognised worldwide. They work as an addition of 10 to 20 % of your liquid assets, held for at least 5 years, longer is fine.
What are the best gemstones to invest in?
Above all untreated rubies, sapphires and emeralds in very good quality from about 1 carat. Rarities such as spinel or fancy coloured diamonds can be added once your core is in place.
What is the price of a ruby per carat?
It depends on colour, clarity, weight, origin and treatment. An untreated ruby can be worth many times a heated stone of the same size. Investment quality currently starts at around 5,000 EUR net per carat. Our cooperation partner shows you real stones with certificate and price.
How do I recognise a natural, untreated gemstone?
Only through the certificate of an independent lab. It states whether the stone has been heated or otherwise treated. For larger stones it comes from GRS, Gübelin or SSEF; such a report alone costs 450 to 1,000 EUR and does not pay off for an entry-level stone. You cannot see this with the naked eye.
How does the purchase work?
You fill in the form, our cooperation partner in Vienna gets back to you with a selection. You pay by bank transfer directly to them, the stone is delivered insured or, on request, stored in Singapore. For orders under 25,000 EUR shipping and customs clearance are added.
Do I have to store my stones in Singapore?
No. Storage is an option. Many clients keep their stones themselves or wear them as jewellery. Those who store in Singapore save the VAT and have their stones individually sealed and insured.
What does storage in Singapore cost?
1 % per year for storage and insurance, calculated on the higher of the appraisal value or the invoice. Plus a one-off service fee of 250 EUR per shipment to Singapore.
Do I pay VAT when I buy?
With delivery to you, your country's VAT applies. With storage in the bonded freeport in Singapore, no VAT or GST is charged when you buy and while your stones are stored.
Are diamonds a good investment?
White diamonds are considered stable in value but have barely risen in recent years. Their price is strongly influenced by a few large suppliers. For building wealth we recommend coloured gemstones, with diamonds at most as an addition.
How do I sell my gemstones later?
Gemstones are a long-term investment. In the first 5 years there is usually no resale offer, and selling in that period usually means a loss. After that you sell through specialist dealers or auction houses.
Your first step to your own investment stone
Tell us what you have in mind. Our cooperation partner in Vienna gets back to you with a selection that fits your goal. Free and without obligation.
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