Certified natural sapphires from 2 carats, supplied wholesale to jewelers and dealers See also: Ruby Supplier, Natural Diamond Supplier and Gemstone Supplier.
Message us on WhatsAppCatalogueNatural Diam Srl is a supplier of natural sapphires based in Milan, Via Giuseppe Mazzini 16. We supply certified sapphires to jewelers, workshops, resellers, dealers and collectors across Italy and Europe, with offices in Mumbai and Bangkok as well.
If you are looking for a supplier of sapphires in Milan or Italy, we work with certified stones from 2 carats. Every sapphire comes with a report from a recognised gemological laboratory, stating type, origin and treatment.
We work with reports from the leading gemological laboratories: Gübelin, SSEF, GRS and Christian Dunaigre. The report is the foundation of any wholesale purchase: it confirms the stone is natural, states its origin and declares any treatment.
In the online catalogue we separate unheated sapphires (No heat) from heated ones (Heated), so you can compare stones with the right information in front of you.
We describe colour with the trade terms used internationally, such as Royal Blue and Cornflower Blue for blue sapphires. We keep them in English because they are the terms used on reports and by dealers worldwide.
Sapphires are not only blue: the catalogue includes other colours as well. If you need a specific shade, message us and we reply with the stones available.
Heating is a common treatment for rubies and sapphires, and the report states it explicitly. An unheated stone and a heated stone can differ greatly in value, so the laboratory report is what establishes what you are buying.
That is why we never describe a stone in words alone: we show you the report. Ask for the report, photos and video of the stone you like, and compare origin, treatment and carat weight before you decide.
We sell wholesale, not retail. Browse the online catalogue, pick the stones you like and message us on WhatsApp at +39 351 397 6900 with the stock number. We reply with the report, photos and video.
If you do not find what you need, describe the size, colour and budget: we search among the available stones and propose the closest alternatives.
FAQ
Natural Diam Srl is based in Milan, Via Giuseppe Mazzini 16, 20123, and supplies certified natural sapphires to jewelers and dealers across Italy.
We offer certified sapphires and rubies from 2 carats.
We work with Gübelin, SSEF, GRS and Christian Dunaigre reports, with origin and treatment stated.
In the catalogue we show for each stone whether it is unheated (No heat) or heated (Heated).
No, we supply wholesale to jewelers, dealers and collectors.
Send us the size, quantity or carat weight you are looking for and we will come back with options.
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