£500 to £1,000

18ct 4-claw diamond solitaire engagement ring

18ct 5-stone diamond ring

18ct diamond halo engagement ring

18ct emerald-cut diamond solitaire engagement ring

18ct white gold square style diamond ear studs

Antique 1883 Diamond Five Stone Ring

Antique Diamond Brooch

Antique Diamond Openwork Pendant

Antique Diamond Pheasant Stick Pin

Antique Edwardian Old Cut Diamond Ring

Bezel Set Round Cut Diamond Band Ring

Diamond half eternity ring

Diamond set bow-style ring with crossover shoulders

Diamond solitaire engagement ring

Diamond Square Set Solitaire Ring

Diamond Star Signet Ring

Platinum single stone square diamond ring

Round Cut Diamond Beaded Band Ring

Shaped Diamond Half Eternity Ring

Single stone diamond pendant

Vera Wang Heart Diamond and Sapphire Pendant

Vintage 1979 Star Set Diamond Signet Ring

Vintage 1990's Old Cut Diamond Three Stone Ring

Vintage 2002 Baguette Diamonds Three Stone Band Ring

Vintage Diamond Cluster Ring

Vintage Diamond Cluster Ring

Vintage Diamond Daisy Cluster Ring

Vintage Diamond Set Bird Stick Pin

Vintage Diamond Solitaire Ring

Vintage Old Cut Diamond Full Eternity French Ring

Vintage Round and Pear Cut Diamond Cluster Ring

Yellow gold 2-stone diamond cross-over ring