An 18 Karat Yellow Gold, White Gold, Turquoise and Diamond Brooch

containing one oval cabochon cut turquoise measuring approximately 9.78 x 7.23 mm, four oval cabochon cut turquoise measuring approximately 9.57 x 5.92 mm, 44 navette shape cabochon cut turquoise measuring approximately 4.68-6.23 mm long, 14 round brilliant cut diamonds weighing approximately 0.50 carat total and 123 round single cut diamonds weighing approximately 1.25 carats total.
Stamp: 18K.
23.60 dwts.

The brooch is missing one diamond (approximately 1.4mm space left). The white metal surface acid and electronic tests for 14 karat.
Diamond Characteristics (graded in setting)
Color: G-H.
Clarity: VS-SI.