Every piece offered by Antiqua is individually sourced, authenticated, and curated for timeless style. Fine materials, historic detail, and thoughtful restoration define our collection.
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1.00ct Diamond Black Onyx Solitaire Ring

A beautifully crafted ring tested as platinum, featuring a 1.00ct certified natural round brilliant cut diamond in a refined bezel setting. The centre diamond is framed by a striking black onyx surround, creating an elegant geometric target design that offers a bold contrast against the brilliance of the diamond.

The openwork gallery adds a touch of sophistication while allowing light to enhance the sparkle of the certified centre stone. With its clean lines and timeless styling, this ring is equally suited as a statement piece or a unique engagement ring.

Specifications

  • Metal: Tested as Platinum
  • Centre Stone: Certified Natural Diamond
  • Diamond Weight: 1.00ct
  • Diamond Shape: Round Brilliant Cut
  • Diamond Colour: G
  • Diamond Clarity: SI2
  • Diamond Certificate: IGI
  • Accent Stone: Black Onyx
  • Ring Size: L 1/2
  • Total Weight: 3.45g
  • Hallmarks: None present (tested as platinum)

Condition

Presented in excellent pre-owned condition. The certified diamond and black onyx are secure with minimal signs of wear. Professionally cleaned and ready to wear.

Shipping

  • Dispatched within 1 business day
  • Fully tracked and insured delivery
  • Supplied in a presentation jewellery box

Please review all photographs carefully as they form part of the description and condition report.

CARE & MAINTENANCE

Pre-loved and antique jewellery should be worn and handled with care. We recommend avoiding exposure to water, chemicals, perfumes, and excessive heat, and storing pieces separately to prevent damage. Clean gently with a soft, dry cloth and avoid ultrasonic or abrasive cleaning methods unless professionally advised. When in doubt, please contact us—we are always happy to help.

SHIPPING & RETURNS

UK next-day delivery available. International shipping offered. Returns accepted within 14 days (excluding resized or customised items).

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