Gemstone Supplier

Natural diamonds, certified rubies and sapphires, supplied wholesale from our office in Milan See also: Ruby Supplier, Sapphire Supplier and Natural Diamond Supplier.

Message us on WhatsAppCatalogue

A gemstone supplier in Milan and Italy

Natural Diam Srl is a gemstone supplier based in Milan, Via Giuseppe Mazzini 16. We supply natural diamonds and certified rubies and sapphires to jewelers, workshops, resellers, dealers and collectors across Italy.

We have offices in Milan, Mumbai and Bangkok, and reply directly from our office in Milan.

GIA and IGI certified natural diamonds

Certified diamonds come with a GIA or IGI report and each diamond is linked to its own report. We supply certified diamonds above 0.30 ct and perfectly calibrated melee up to 0.70 mm.

Our stones are fully traceable and responsibly sourced.

Certified rubies and sapphires from 2 carats

We offer certified natural rubies and sapphires from 2 carats, with Gübelin, SSEF, GRS and Christian Dunaigre reports. Origin and treatment are stated for every stone, and the catalogue separates unheated stones (No heat) from heated ones (Heated).

For colour we use the trade terms in English, such as Pigeon Blood and Royal Blue.

Wholesale to jewelers and dealers

We sell wholesale, not retail. The online catalogue shows the available stones; for reports, photos and video message us on WhatsApp at +39 351 397 6900.

Tell us the size, quantity or carat weight you need and we reply with options.

Where we are

Natural Diam Srl, Via Giuseppe Mazzini 16, 20123 Milan. We work with customers across Italy and with our offices in Mumbai and Bangkok.

For a quote or a specific request, the quickest way is to message us on WhatsApp.

FAQ

Where can I find a gemstone supplier in Milan?

Natural Diam Srl is based in Milan, Via Giuseppe Mazzini 16, 20123, and supplies certified diamonds, rubies and sapphires to jewelers and dealers across Italy.

Which stones do you supply?

Natural GIA and IGI certified diamonds, calibrated melee, and certified rubies and sapphires from 2 carats.

Do you sell wholesale?

Yes, we supply wholesale to jewelers, dealers and collectors.

How do I request a quote?

Message us on WhatsApp at +39 351 397 6900 with the size, quantity or carat weight.

Where are your offices?

In Milan, Mumbai and Bangkok.

Tell us what you need

Send us the size, quantity or carat weight you are looking for and we will come back with options.

Message us on WhatsApp