Calderoni has been a leading player in the sale of diamonds and precious stones for over 200 years.
Every product is accompanied by an international gemological certificate. The diamonds are carefully selected by the Maison’s highly qualified staff. Each order is guaranteed by a safe custody service and an anti-counterfeiting seal. Calderoni’s reliability and professionalism ensure the safe purchase of the world’s most precious stone: the diamond.
The price list for our certified diamonds is transparent and easy to understand. Diamond prices are based on the Rapaport Diamond Report.
The Rapaport Diamond Report is the primary source of diamond prices and diamond market information. Diamond prices are published periodically on the website, based on the carat, shape, colour and clarity of the gems.
DIAMOND IN BLISTER PACKS
Mark life's most important occasions; celebrate a birth, christening, holy communion, confirmation, anniversary or graduation with a truly unforgettable gift. Calderoni’s diamonds in blister packs are a unique choice. Discover the features of a Calderoni diamond, guaranteed by the very best safety and anti-counterfeiting technology. Each diamond is stored in a special CertiCard® case, which instantly detects any attempt to open any part of the case. The product’s authenticity and integrity are guaranteed from the time of sealing.Find out more
A further advantage in buying Calderoni: it is always possible to replace a diamond previously purchased by Calderoni by purchasing higher value stones.
Calderoni adheres to the ethical principles of the Kimberley Process and ensures that the entire production chain of diamonds on sale, since the extraction of precious stones, is controlled and certified.
Calderoni diamonds are certified by leading international gemological institutes, guaranteeing the authenticity of each individual stone and related features.
ENGRAVING the diamond
Every diamond is unique:the Certification Code is engraved on the girdle of every stone with a carat weight of 0.30 or more.
Calderoni offers a replacement certificate for every single Diamond starting from 0.30 ct, issued by a leading insurance company, in case of theft or robbery in a home or a safe at the bank for a period of three years.Find out more
Calderoni offers after 5 years from the date of purchase, the diamonds setting service on Calderoni production rings.