CONSCIOUS LUXURYIndependently certified by IGI or GIA, every Astrea London diamond and every piece of jewellery carries the assurance of exceptional quality and authenticity.
Astrea London

Eternal Collection

Round Brilliant Cut Tennis Necklace

£16,500

Inspired by timeless sophistication, our round brilliant cut lab-grown diamond tennis necklace sparkles with a sleek line of diamonds set in 18K Gold or Platinum.

Select Carat Weight12.00ct
12.0ct30.0ct

Inspired by timeless sophistication, our round brilliant cut lab-grown diamond tennis necklace sparkles with a sleek line of diamonds set in 18K Gold or Platinum.

IGI certified · Insured shipping worldwide · Complimentary resizing

A jeweller setting stones by hand at the Astrea London bench

Craftsmanship

Set by hand,
considered twice

Each piece begins as a drawing, then a wax, then a single casting. Stones are chosen individually, matched for colour and life, and set under the loupe. Galleries are pierced, edges softened, and the finish brought up by hand over several days — the work you cannot see is the work that lasts.

Nothing leaves the atelier until it has been reviewed twice.

Round Brilliant Cut Tennis Necklace

£16,500