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Dianco B.V.B.A.

Established 1984, Rio Tinto Diamonds Customer Since 1984

With a consistent supply of rough from four of the leading mining companies: DTC, Rio Tinto, Alrosa, and BHP, Dianco is one of the leading diamond manufacturers in the world. Driven by a passion for the diamond industry, we constantly endeavour to give our clients the best in terms of quality and commitment. Our strengths are our steady supply of rough, skilled craftsmen, deep company values and our primary focus on satisfying our customer’s every need.

Products & Services

Dianco and our affiliate D. Navinchandra Exports, have a range of polished diamonds encompassing a variety of colours, clarities and carats. We offer round brilliants from 0.005cts to 0.90cts in:
• Whites from 0.005cts to 0.90cts
• Light Browns and Light Capes from 0.01cts to 0.17cts
• VVS-I3 qualities
• GIA, HRD and IGI certified goods, from 0.90cts to 3.00cts


As manufacturers of loose diamonds, it is imperative that one must have the competency and capabilities to deliver world-class products to our customers and as a result Dianco is the preferred supplier of quality polished diamonds to reputed jewellery manufacturers and retailers. With our polished head office in Mumbai and marketing affiliates in Antwerp, Dubai, Hong Kong, Shanghai New Delhi, Kolkata and Hyderabad the company has access to major diamond markets around the world. Adding a new facet to diamond production, we believe that there is nothing more precious than the faith of a satisfied customer. The company seeks to achieve this trust every day, in every transaction conducted.

Vision & Strategy

A dream, a vision translated into a sound mission is what can be summarized as the force behind Dianco. All of our clients have access to dedicated service teams led by a direct personal contact. Our successful client relationships are based on Dianco’s insight into the specific needs and priorities of each of our clients. We believe that our commitment to our customers does not end with the sale. We work closely with our customers to understand prevailing market conditions and price points to forecast future trends. This sharing of information has helped our customers to stay ahead of the curve and progress.

Company/Family Background

The D. Navinchandra Group was founded in 1970 by Navinbhai Mehta and Shantibhai Mehta. The company started as a small family business, but soon became a network of specialist businesses, each able to successfully fulfil client needs. This eventually formed the platform for a global company which provides employment to over 12,000 artisans. Now they have handed over the reins of the company to their sons and nephew: Samir Mehta, Ajesh Mehta and Manoj Mehta. We are a key player in the diamond industry with a global clientele base and an unparalleled reputation.

 Business Offerings 
  • Rough Dealer
  • Cutting & Polishing
  • Polished Sales

 Product Range  Core Products

 Sales Regions 
  • Belgium
  • India
  • Hong Kong
  • Dubai

  • Argyle
  • Diavik

 Principal(s)/Founder(s)  Manoj Mehta

 Contact Information  HEAD OFFICE
Dianco BVBA
2 Hoveniersstraat PB 306
Antwerp 2018
T: +32 3 232 98 27
F: +32 3 231 96 83

D Navinchandra Exports Pvt Ltd
GW-8101, 8th Floor, G-Tower
Bharat Diamond Bourse,
Bandra Kurla Complex,
Bandra (East),
Mumbai, India
T: +91 22 6607 6000
F: +91 22 6607 6099

New Delhi, India
Mr. Manish Shah
T: +91 11 2875 30 81

Hyderabad, India
Mrs. Bina Dhakan
T: +91 40 66660039

Kolkata, India
Mr. Malay Shah
T: +91 8981279140

Dianco LLC
Dubai, UAE
Mr. Sujal Shah
T: + 971 4 2352846 / 47
F: + 971 4 2352801

Dianco (HK) Ltd
Hong Kong, China
Mr. Jigar Shah
T: +852 3904 2595
F: +852 3904 2594

Dianco (Shanghai) Ltd
B706a, China Diamond Exchange,
1701 Century Avenue,
Pudong, Shanghai
T: +86 21 61099375
F: +86 1360 1063 474