An 8.5 carat big green amethyst and white topaz gold vintage ring.

A vivid purple and gold ametrine in a heavy openwork white gold mounting.

Deep, chocolate brown quartz and diamond yellow gold vintage ring.

Contemporary vintage black white diamond ring in white gold.

Exceptional antique twin old mine cut diamond platinum filigree engagement ring enhanced by six round diamonds.

An impressive vintage yellow topaz diamond ring in platinum with gold highlights.

A vintage designer brown topaz sterling silver 18kt gold ring by Lagos signed Caviar.

Art Deco gold filigree 1930s diamond blue sapphire wedding band.

An estate LeVian designer aquamarine diamond ring in 14kt strawberry gold.