Bidspirit auction | An Islamic Deep Blue Intaglio

An Islamic Deep Blue Intaglio Gemstone with Calligraphic Inscription, Possibly Sapphire. A domed oval-shaped gemstone of deep cobalt blue hue, possibly sapphire, intricately carved with vegetal and script-like motifs around its bevelled edge. Approximately 2.6 x 1.5cm Provenance: Part of a private collection based in W London.