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Since 1982 · Family Office & Diamantaire · Lucerne

No tangible asset concentrates wealth like a natural colour diamond.

Welcome Future AG gives private investors access to natural Fancy Color diamonds, in the second generation and with the structure of a family office. Every diamond is independently certified, its provenance is documented and its price is placed within market logic.

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Natürlicher Fancy Color Diamant im Radiant Schliff in kräftigem Pink auf hellem Leinen

Fancy Color Index since 2005

+202.1 %

Asset Class

One in 10,000 natural diamonds.

Get a feel for Natural Fancy Color diamonds as an asset class.

Rarity

Nitrogen within the atomic structure produces the yellow colour. A higher nitrogen content leads to deeper and more vivid tones, with the Fancy Vivid grade denoting the clearest and most intense saturation among yellow diamonds.

Since 2005+47,0 %
Ten years+21 %
Q1 2026unchanged

Value development

The Fancy Color Research Foundation index shows a value increase of 47,0 percent for yellow diamonds since 2005. Over the past ten years the gain amounted to 21 percent. In the first quarter of 2026 the segment remained unchanged.

Reference transaction

On 17 June 2025 in New York, Christie's achieved 2,2 million US dollars for a Fancy Intense Yellow of 84,05 carats, a result above the high estimate. At Sotheby's in November 2025, a pair of ear pendants set with Fancy Vivid Yellow diamonds totalling more than 77 carats was sold for 2,7 million francs.

Supply side

Yellow diamonds occur more frequently and in larger carat weights than pink or blue ones. This results in a broader circle of buyers on resale and thus the most reliable tradability among coloured diamonds. Anyone wishing to build a position and later sell it again will find the most liquid market here.

Your entry point

From 15.000 francs you receive a GIA-certified natural diamond in the range [TO BE CONFIRMED: colour grade] with a weight of [TO BE CONFIRMED: carat range] and complete documentation. The segment is well suited as the first position in a coloured diamond portfolio.

Rarity

Pink does not arise from trace elements but from structural distortions in the crystal lattice under immense pressure deep within the earth. Only about 0,0001 percent of all natural diamonds display this colour.

Since 2005+389,8 %
Ten years+116 %
Q1 20260,3 %

Value development

Since 2005 the Fancy Color Research Foundation index has recorded a value increase of 389,8 percent for pink diamonds. Over the past ten years the gain amounted to 116 percent. In the first quarter of 2026 the segment eased by 0,3 percent, with Fancy Intense Pink at a size of one carat the strongest gainer of the entire index at plus 1,9 percent.

Reference transaction

The Williamson Pink Star of 11,15 carats, Fancy Vivid Pink and Internally Flawless, achieved around 57,7 million US dollars in October 2022 at Sotheby's in Hong Kong. This corresponds to about 5,18 million US dollars per carat and thus the highest price per carat ever achieved for a diamond. On 17 June 2025 the Marie Thérèse Pink of ten carats was sold at Christie's in New York for 14 million US dollars, against a high estimate of five million.

Supply side

The principal source of supply for pink diamonds, the Argyle Mine in Western Australia, has been closed since November 2020. All remaining deposits together cover only a low single-digit share of the market. No replacement is foreseeable, as a newly discovered deposit would require ten to fifteen years to reach production maturity.

Your entry point

From 25.000 francs you receive a GIA-certified natural diamond in the range [TO BE CONFIRMED: colour grade] with a weight of [TO BE CONFIRMED: carat range]. We document provenance and the chain of acquisition in full and accompany you, on request, throughout the entire holding period.

Rarity

Traces of boron in the structure give blue diamonds their characteristic colour. They belong predominantly to type IIb, which accounts for less than 0,1 percent of all natural diamonds, and form at depths of more than 500 kilometres.

Since 2005+239,5 %
Ten years+81 %
Q1 20260,3 %

Value development

Since 2005 the Fancy Color Research Foundation index shows a value increase of 239,5 percent for blue diamonds. Over the past ten years the gain amounted to 81 percent. In the first quarter of 2026 the change was 0,3 percent.

Reference transaction

Two results from Switzerland demonstrate the level. The Mediterranean Blue of 10,03 carats, Fancy Vivid Blue, achieved 17,86 million francs on 13 May 2025 at Sotheby's in Geneva. The Mellon Blue of 9,51 carats, Fancy Vivid Blue and VVS1, was sold on 11 November 2025 at Christie's in Geneva for 20,5 million francs, making it the most expensive piece of jewellery of the auction year.

Supply side

Blue diamonds originate almost exclusively from a few deposits, foremost among them the Cullinan Mine in South Africa. In June 2026, at Sotheby's and Christie's in New York, four blue diamonds achieved results between 8,2 and 8,7 million US dollars, at sell-through rates of 98 and 100 percent respectively. Demand in the very top segment thus remains undiminished.

Your entry point

From 60.000 francs you receive a GIA-certified natural diamond in the range [TO BE CONFIRMED: colour grade] with a weight of [TO BE CONFIRMED: carat range]. Owing to the limited availability, acquisition in this segment regularly takes place through a targeted search according to your specifications.

Rarity

Argyle pink diamonds come from the Argyle Mine in Western Australia, which before its closure provided around 90 percent of the world's supply of pink and red diamonds. Over 37 years of operation the mine extracted 865 million carats of rough diamonds, of which only 0,13 percent reached the quality for the annual tender.

Tender until 2020over +500 %
Productionended
Global market sharearound 90 %

Value development

Rio Tinto puts the value increase of the Argyle diamonds sold at tender at over 500 percent within the two decades to 2020, and thus at a level above all major equity markets. The final tender in 2020 achieved the highest total result in the 37-year history of this auction.

Reference transaction

The Argyle Eternity of 2,24 carats was the most valuable lot of the 2020 tender and at the same time the most valuable Fancy Vivid diamond ever offered in the entire history of the tender. It went to a specialist dealer in Hong Kong. The 2020 tender recorded bidders from eight countries and the highest number of participants in its history.

Supply side

Production ended definitively on 3 November 2020. Since then no new supply has been created. The market is fed exclusively from second-hand holdings, whereby the available volume passes into firm hands with every transaction and continues to diminish.

Your entry point

The value of an Argyle diamond depends directly on its verifiable provenance. Every diamond bears a laser inscription and a certificate of origin that documents the chain of custody without gaps. From 30.000 francs you receive a certified Argyle diamond in the range [TO BE CONFIRMED: colour grade] with a weight of [TO BE CONFIRMED: carat range], including full verification.

Value development by colour since 2005

Fancy Color Research Foundation, Fancy Color Diamond Index, recorded since 2005, as at Q2 2026, published on 1 August 2026

Value development of natural coloured diamonds since 2005 Fancy Pink 389,8 percent, Fancy Blue 239,5 percent, Fancy Yellow 47,0 percent, overall index 202,1 percent. Fancy Pink +389,8 % Fancy Blue +239,5 % Fancy Yellow +47,0 % Overall index +202,1 % 0 % 100 % 200 % 300 % 400 % Source: Fancy Color Research Foundation, Fancy Color Diamond Index, recorded since 2005, as at Q2 2026, published on 1 August 2026.
Bar chart of the value development of natural coloured diamonds since 2005: Fancy Pink 389,8 percent, Fancy Blue 239,5 percent, Fancy Yellow 47,0 percent, overall index 202,1 percent.
Key market events since 2005 2005 start of index data collection, 2020 closure of the Argyle mine, 2022 record price per carat, 2026 stable market. 2005 Index data collection begins 2020 Argyle closes 2022 Carat record pink 2026 Market stable
Timeline with four market events: start of index data collection in 2005, closure of the Argyle mine in 2020, record price per carat in 2022, stable market in 2026.

Statements on value development relate to the past and do not constitute a reliable indicator of future performance. The auction results shown concern individual objects of the highest quality and cannot be transferred to natural diamonds in general. Natural coloured diamonds are tangible assets without ongoing income and without a regulated market. This presentation is provided for information purposes and does not constitute investment advice.

Asset Class Assessment

Rarity alone does not create value.

Natural Fancy Color diamonds are not a mass market. For a sound decision we assess every natural diamond against four criteria that determine value only in combination.

  • FAINT LIGHT FANCY INTENSE VIVID Value

    01

    Colour and Intensity

    About one in ten thousand natural diamonds carries a true fancy colour. Between two saturation grades the value can multiply.

  • COLOUR ORIGIN Natural COLOUR GRADE Fancy GIA · IGI · HRD

    02

    Certificate

    Two lines of the report are decisive: the natural origin of the colour and the saturation grade. Without them a colour diamond cannot be valued internationally.

  • MINE CUT REPORT PURCHASE EVERY STAGE DOCUMENTED

    03

    Provenance

    A diamond’s history is part of its value. Documented and conflict-free provenance determines its later acceptance on the market.

  • Global Available Suitable ACCESS IS DECISIVE

    04

    Access

    The most valuable diamonds often change hands quietly. Our direct access to the international trade brings you natural diamonds that are barely reachable on the open market.

The rarest

Natural colour reveals itself
in direct comparison.

With natural Fancy Color diamonds, colour determines value well ahead of size and clarity. GIA describes colour through three dimensions: hue, tone and saturation. Even one grading step, for example from Fancy Intense to Fancy Vivid, can multiply the value of a diamond. The rarity of the colour itself adds another layer: less than half a percent of all graded diamonds show any Fancy colour at all, and within this small group each colour forms its own market with its own availability, provenance and price development. The following sections show where the key colour positions stand and what distinguishes them for investors.

1 7
Natural Fancy Vivid Yellow diamond in radiant cut on a light working surface

The entry into colour

Fancy Yellow

Formation
Nitrogen in the atomic structure creates the yellow colour. A higher nitrogen content leads to deeper and more vivid tones up to the Fancy Vivid grade.
Origin
Occurrences are found on several continents, including southern Africa. Intensely coloured Zimmi stones from Sierra Leone are considered especially sought after.
Rarity
Yellow is the most accessible Fancy colour and also occurs in larger carat weights. The Fancy Vivid grade represents only a small fraction of it.

Its comparatively good availability is its strength: yellow diamonds have the broadest buyer base on resale and are suitable as a first position in a colour diamond portfolio.

Yellow diamonds as an investment: the full assessment
Approach

Four steps. One line.

We begin not with a natural diamond but with a classification of your situation. Only then does it become clear whether and how a Natural Fancy Color Diamond fits your structure.

  1. Discreet initial review

    It begins with a personal conversation about objective, volume and time horizon, and, if desired, also about existing natural diamonds. No obligation or sales pressure arises from this.

  2. Selection and verification

    We source suitable candidates through international trade and verify every stone against its GIA, IGI or HRD certificate as well as current comparable market values.

  3. Documentation

    Certificate, provenance, photography, contract and insurance are brought together in full. You receive all documents in writing and in a form that remains understandable without specialist knowledge.

  4. Ongoing support

    Secure handover or storage is followed by long-term support. If you later consider a resale, we place your diamond back into the current market context.

Porträt von Patrick N. Leiser, Geschäftsführer der Welcome Future AG

Patrick N. Leiser

Managing Director and second generation diamantaire

  • Since 1982Family business in the diamond trade
  • IGI AntwerpGemmological training
  • RapNet since 2017Access to the international trading network

Expertise

“Every diamond must convince us twice: as gemmologists and as merchants.”

Patrick N. Leiser leads Welcome Future AG in the second generation, with roots in the diamond trade dating back to the 1980s. His gemmological training at IGI in Antwerp forms the basis of every recommendation: each stone is first examined through the eyes of the gemmologist and then through those of the merchant who must be able to sell it again one day.

He personally accompanies qualified buyers, collectors and families, from the first meeting in Lucerne through selection and review to handover and secure storage. Every diamond offered is graded by one of the leading institutes and has documented provenance.

Schedule a conversation Every mandate begins with a personal conversation.