• About

    A diamond dealer member of the
    Diamond Bourse guarantees ethics
  • Diamond Dealer
    Member of the World Federation of Diamond Bourses
    A diamond dealer for over 20 years, historically based in Antwerp and Tel Aviv then present in New York and Dubai, Diamant Factory works with its team of brokers throughout the world enabling it to obtain the most beautiful stones directly on the market. A member of the Federation of Diamond Markets, the Diamant Factory widened its services by creating a jewelry workshop covering the range of crafts that make up the jewelry making process.
  • Jeweler's workshop
    Member of the World Federation of Diamond Bourses
    Diamant Factory combines the efficacy of its expertise in diamond cutting, proposing an exceptional selection of stones (quality, size, color, price), with its mastership of the jewelry making process found in its workshops. Its designers, draftsmen, smelters, jewel setters, and craftsman jeweler’s work together to create collections characterized by their simple and refined design which puts the priority on the stone. Within in workshop, Diamant Factory blends the ancestral know-how of its craftsmen with cutting-edge techniques providing its creations with unparalleled precision.
  • Trading - Expertise - Made to order
    Member of the World Federation of Diamond Bourses
    A master of the entire sequence of processes leading from the diamond to the jewellery piece, the Diamant Factory teams of gemologists also propose personalized customer support, advice and a made-to-order design service throughout the story of your unique creation (quote, feasibility study, purchase of the stone, restoration, etc). As a true “made-to-order cutter”, Diamant Factory undertakes discreet and determinative work to enhance and add femininity to the stone.
  • Authenticity and ethics
    Member of the World Federation of Diamond Bourses
    As a member of the Federation of Diamond Bourses, a diamond dealer is the guarantor of an ethical code and as such gains access to the very select sphere of the most beautiful stones in the world. Without resorting to intermediaries, the dealer will search for the diamond at its source, thereby ensuring the authenticity and the value of the stone. Only an exclusive few diamond dealers have access to this privilege. Thanks to this advantage that Diamant Factory possesses, certain collections presented are made with diamonds of the very highest quality (D, E, F color and LC VVS clarity).

The diamond

An ancestral fascination
The diamond
An ancestral fascination
Throughout time, the diamond has held a particular fascination for people and cultures. From Greco-Roman antiquity where it was the symbol of strength and dubbed “the indomitable, the invincible”, also found encrusted on Cupid’s arrows and strengthening the eternal link between husband and wife, or again at the heart of the Indian civilization where it was called “the fruit of the stars”, the diamond has been attributed curative, protective, and spiritual virtues. With the opening of the maritime routes to India in the 15th century, it then became the jewel of kings, decorating every crown, until it became universally recognized, as Marilyn Monroe sang in the 1950s, as “a girl’s best friend”.

Diamond mining and trading

It was in 1871 that diamond-bearing rock was discovered in the Kimberly region;
hence the name given to this rock: kimberlite. Commercial mining then began
which gave rise to the De Beers Consolidated Company. De Beers rapidly
became the largest diamond company in the world.
Whereas knowledge of the composition of the diamond dated from the 13th century,
it was not until the 20th century that chemists were able to produce it. From that
moment on, the diamond became an industrial material subject to strict regulation.

The 4 Cs

In the 20th century, gemologists established the famous 4 Cs –
clarity, carat, cut, color – which became world characteristics
for assessing the value of a diamond.
  • Color
    Color has a significant impact on a diamond’s value. The most known color is white (transparent). But its tint may vary in relation to its chemical properties; the stone is classified on a scale from D (diamond) to Z.
  • Cut
    The cut relates to the angles and proportions of a diamond based on complex scientific formulas. A very well cut diamond will reflect the light from one facet to another like a mirror, disperse it and reflect it via the diamond’s table (the top, central part of the diamond).
  • Clarity
    Diamonds with little or no inclusion are extremely rare and very expensive. These inclusions may resemble crystals, clouds or tiny feathers. A scale of clarity was established to classify the diamond according to its degree of pureness.
  • Carat
    The weight of a diamond is measured in carats (a word coming from the ancient Greek keralta, signifying horn and designating the carob, a tree whose pods were used as master weights). One carat is equivalent to 0.20 g.
The identity card
The gemological certificate first appeared in 1970 and profoundly changed the codes of the profession. The gemological certificate only has meaning when it is recognized by the profession. The gemological certificate is the identity card of the diamond.

It comes in the form of a plasticized card on which all the characteristics of the evaluated diamond are printed. In order to avoid counterfeits and ensure that it is foolproof in nature, a certificate incorporates holograms, specific textures and micro-texts.
Gemological laboratories propose various types of certificates in several formats (A4, A5, credit card format, etc,).

Lastly, they offer additional services such as: laser inscription of the certificate number on the diamond, the possibility to embed the diamond in a plastic box, etc.
Cut: only the diamond cuts the diamond
The cut of a diamond depends on the natural shape of the raw stone. In addition, other important criteria determine its final shape. Yield remains a decisive factor in the final result and represents all the difficulty in the work of the diamond cutter (a choice between size and quality). The quality of the cut is also one of the factors determining the final value of the stone on the market.

Lastly, because of its extreme hardness, the diamond can only be worked by another diamond. The cutting and polishing of the stone are capital. For these reasons it is often the case that raw diamonds are studied for several months before being cut.
  • HRD expert at Diamant Factory
  • Setting a diamond in our workshop
  • Sealed casket of a wax seal


Rare and precious, platinum is a strong and noble metal. Platinum working is a skill which is rare and complex. Every stage in the creation of a platinum-worked piece of jewellery – from smelting to polishing the platinum – demands extreme finesse.

Each piece of jewelry in platinum is punched with the following symbol: PT or PLAT. Platinum is more expensive than gold for several reasons: its rareness is thirty-times higher, its alloy is 95% pure compared to 75 % for gold. And finally, it has a greater density than gold: for a ring of the same size, a platinum piece of jewelry will be 40% heavier in weight.
There are several colors for 18 carat gold: yellow - pink - gray – white gold is a term often used to denote gray gold or blue gold. In France, the stamping of jewelry made of gold has been mandatory since November 9th 1797 by the stamping of hallmarks. Two stamps are used: the first, dubbed “State stamp”, indicates the title; the second is the stamp used by the maker, called the “Maker’s stamp”.

Gold retains a very important economic role. It is quoted on the world’s main stock exchanges such
as New York, London and Tokyo. Transactions taking place on this commodity, notably in times of crisis, are considered to be an economic indicator. Gold remains, as a precautionary measure, in the reserves of the world’s main central banks. The world’s biggest reserve of gold bullion can be found in the United States at the Federal Reserve Bank of New York, though less famous than that of Fort Knox, Kentucky.

Second hand

Firmly turned towards the future while passionate about the history of jewelry making and the ancient heritage of cutting, Diamant Factory possesses a “second hand purchase” workshop that includes jewelry from every era and in every style.


Contact us

For questions about an order or information
on our products
Our shops
Du lun. au sam., de 10.00 à 19.30.
Les Allées Provençales
168 Avenue Giuseppe Verdi
13100 Aix-en-Provence, France
+33 (0) 442 549 728
Institut du Diamant
Sur rendez-vous
74 boulevard Périer
13008 Marseille, France
+33 (0) 967 630 558
Du lun. au sam., de 10.00 à 19.30.
Le Gray Albion
17 boulevard de la Croisette
06400 Cannes, France
Sur rendez-vous
55 Hoveniersstraat
Diamond Plaza
2018 Antwerp, Belgique
Tel Aviv
Sur rendez-vous
Jacobinsky, 1
Maccabi Building
Tel Aviv, Israël
(Ouverture prochaine)