Late 20th Century Oval Opal & Diamond Cluster Ring

Ring in 18ct yellow gold with white gold diamond setting. The gold is hallmarked 750 (18ct), Birmingham 1983, and the makers/sponsor mark is HAN Jewellery Ltd. An opal cabochon (shallow) sits in the middle of the ring and has a carat weight of 3.75ct. In addition to the opal, there are two trilliant cut diamonds that have an estimated total carat weight of 0.28ct. This means each of the trilliant cut diamonds weighs 0.14ct (estimated), the estimated colour is H/I, and the estimated clarity is VS1/VS2. There is also a cluster of 18 round brilliant cut diamonds that surrounded the opal, each of which is estimated to be 0.01ct, for a total of 0.18ct. The estimated colour of the cluster of diamonds is H/I and estimated clarity VS1/VS2. This ring is a late 20th century ring and is pre-owned. Ring size J.

  • 18ct yellow gold 
  • 18ct white gold diamond setting
  • Hallmarked 750
  • Hallmarks for Birmingham 1983
  • Makers/sponsor mark HAN Jewellery Ltd
  • Opal gemstone 
  • Carat weight of the opal 3.75ct
  • Opal has white overtone and crystal iridescence
  • The composition colours of the opal are electric blue, mauve, and blue
  • Opal gemstone in a rubover setting
  • Two trilliant cut diamonds
  • Estimated total carat weight of the trilliant cut diamonds 0.28ct
  • Estimated diamond colour of the trilliant cut diamonds H/I
  • Estimated diamond clarity of the trilliant cut diamonds VS1/VS2
  • Trilliant cut diamond in a rubover setting
  • Cluster of 18 round brilliant diamonds
  • Estimated total carat weight of the round brilliant cut diamonds 0.18ct
  • Estimated diamond colour of the round brilliant cut diamonds H/I
  • Estimated diamond clarity of the round brilliant cut diamonds VS1/VS2
  • Round brilliant cut diamonds in a grain setting
  • Late 20th century
  • Pre-owned 
  • Weight 6.3g
  • Shank width 0.19cm
  • Shank depth 0.09cm
  • The shank of the ring is polished with a 'D' section
  • Length of the opal gemstone 1.75cm
  • Width of the opal gemstone 0.95cm
  • Depth of the opal 0.37cm
  • Length of the trilliant cut diamond 0.41cm
  • Width of the trilliant cut diamond 0.41cm
  • Length of one of the cluster round brilliant-cut diamonds 0.15cm
  • Width of one of the cluster round brilliant-cut diamonds 0.15cm
  • Depth of one of the cluster round brilliant-cut diamonds 0.09cm
  • Length of the head of the ring 2.25cm
  • Width of the head of the ring 1.91cm 

Ring Size

Size Guide
J

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