Calderoni: Certified Diamonds to Give Away

Calderoni was born in 1840 in Via della Lupa, today's Via Torino, in the romantic Milan dominated by the Habsburg dynasty.

The brand has always enhanced the characteristics of Made in Italy in the creation of classy jewelry, through the careful selection of the best stones, the most precious materials, with exclusivity, creativity and tradition: for Calderoni, in fact, creating a jewel has always been a challenge towards perfection , towards the ingenious, so much so that it has won the Diamonds International Awards, the World Oscar of jewelry, four times.

The maison boasts almost 200 years of experience in jewellery and in choosing the best diamonds, further strengthened by the almost century-old experience of the Damiani group of which it is now a part.

Discover the benefits and exclusive services

Calderoni has been a leader in the diamond and precious metals sales sector for almost 200 years.

RELIABILITY : Each product is accompanied by an international gemological certificate . Diamonds are carefully selected by the maison's highly qualified staff. Each purchase is guaranteed thanks to the anti-counterfeit seal . The reliability and seriousness of the Calderoni company guarantees a safe purchase of the most precious stone in nature: the diamond.

TRANSPARENCY OF QUOTATION : The price list of certified diamonds is transparent and easy to consult. The prices of diamonds are indexed according to the Rapaport Price List . The Rapaport Price List is the primary source for the definition of diamond prices and information on market trends. The quotations of Calderoni diamonds are published weekly on the website according to the weight, shape, color and purity of the gem.

DIAMOND IN BLISTER : All our stones are sealed in CertiCard® blister, an excellence in the field of security and anti-counterfeiting used by the main laboratories that certify diamonds, and which includes multiple levels of security: housing card; seal card with cryptoprint printing system that highlights the tampering of the CertiCard®; characteristics of the stone described in the CertiCard®; verification of the originality of the CertiCard® by scanning the Qrcode with the free CertiEye app.

ETHICS : Calderoni adheres to the ethical principles of the Kimberley Process and guarantees that the entire production chain of diamonds on sale, starting from the extraction of the precious stones, is controlled and certified .

CERTIFICATION : Calderoni diamonds are certified by the most important international gemological laboratories which, in addition to providing the characteristics of the product, guarantee and certify the authenticity of the diamonds.

DIAMOND ENGRAVING : Each diamond is unique: on stones weighing 0.30 carats or more, the unique certificate code is engraved on the girdle.

Free insurance

Calderoni reserves you an exclusive service for free on your diamond:
free insurance valid for three years. This insurance includes events
throughout the world.

Calderoni therefore undertakes to replace your diamond in the event of:

– Burglary from a locked safe at the main residence;
– Theft from safety deposit boxes at a bank or security institute;
– Robbery at main residence

Certified diamonds, a guarantee of quality

Calderoni accompanies each gem with certifications issued by the most important international gemological laboratories such as GIA, HRD Antwerp, Calderoni Diamond. These certify and guarantee the authenticity of diamonds and information on their characteristics.
The proof of authenticity is also accompanied by information on the weight, color, clarity, cut details, proportions to create a real "identity card" of the diamond. The certification of a diamond offers ease in evaluating and comparing it with other stones and guarantees its quality.