Golconda Type IIa diamond ring, circa 1905.

Golconda Type IIa diamond ring, circa 1905.

Rings, Engagement Rings, Edwardian/Belle Époque Rings



Price: £145,000

€158,050 $184,150 CHF169,650 HK$1,426,800
Ref: 25474

Free Delivery Worldwide.
Local taxes and duties may apply.

There are currently 9 other people interested in this item. Why is this important?

Add to Basket    

Reserve Item      

Add to Wishlist 

  • Email    I

  • Print    I

  • Viewing
  • WhatsApp

Berganza on Twitter Berganza on Facebook Berganza on Instagram Berganza on Pinterest


Golconda Type IIa diamond ring. Centrally set with a cushion shape old mine Golconda Type IIa diamond, E colour, SI1 clarity with a weight of 3.58 carats in an open back claw setting, flanked by eight round old cut diamonds in open back grain settings with a combined weight of 0.08 carats. The total approximate diamond weight is 3.66 carats, to an impressive solitaire design with curving claws, linear open gallery and intricately pierced backholing, flanked to either side with raised open shoulders which terminate to fine ribbed details before flowing to a solid D-shape shank. Tested platinum, circa 1905, accompanied by Gemological Institute of America report #2141498398.

Diamonds are classified by scientists into two main types, depending on the presence of nitrogen in the diamond's chemical makeup. Type II diamonds contain little to no such impurities. This type is further subdivided into two groups, ‘a’ and ‘b’, both of which make up less than two percent of all gem quality diamonds. Type IIa diamonds are extremely rare, and the most pure of all diamonds, and consequently exhibit superior transparency. This type was first identified as coming out of India, namely the Golconda region. Some of the most famous diamonds in the world are Type IIa, including the Koh-i-noor and the Cullinan I.

Ring size guide: M

Convert Ring Sizes. The majority of items can be re-sized free of charge.

Email: info@berganza.com | Opening hours: Monday-Saturday 10am-5pm | Currencies accepted: £ $ CHF
Berganza on twitter Berganza on Facebook Berganza on Instagram Berganza on Pinterest
Updated 23/09/2020 at 4:21PM

| Latest Acquisitions | Copyright Notice | Terms & Conditions | Categories | Privacy Policy | FAQs |

© Berganza Ltd 2020