Turquoise and Diamond Demi-Parure

Comprising: a tiara designed as an entwined undulating ribbon, set with turquoise cabochons, accented by rose-cut diamonds, inner circumference approximately 120mm, comb fitting deficient; 1830s; and a pair of pendent earrings, each composed of a single pampille set with turquoise cabochons and rose-cut diamonds, post and hinged back fittings, one small diamond deficient; circa 1860 and later.