Art Deco Platinum Diamond & Onyx Engagement Ring .85ct Chalcedony and "925" and "750" purity

and "925" and "750" purity marks

luscious red color and catch the light beautifully

The tapered band measures approximately 2mm wide in the back

but could easily be re-sized

fastens securely with a strong snap clasp engraved with "Cartier"

Art Deco Platinum Diamond & Onyx Engagement Ring .85ct Chalcedony and "925" and "750" purityA stunning and bold engagement ring from the Art Deco (ca1920s) era! Crafted in sleek platinum, this ring features a central, bezel set . 85ct old European cut diamond. The brilliant stone displays J K color and SI1 clarity. The diamond is surrounded by a square shaped onyx plaque, which is complemented on both the left and right sides by a vertical row of bead set single cut diamonds. The smaller diamonds, which have an approximate total carat weight