Forbes contributors publish independent expert analyses and insights. I am the founder of La Patiala, the luxury encyclopedia. Turquoise is one of December’s birthstones — the other December ...

6 x 5 x 5 in. (15.2 x 12.7 x 12.7 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

14.6 x 3.5 cm. (5.7 x 1.4 in.) ...

Few stones inspire thoughts of summer quite like turquoise, offered in vivid hues ranging from a clear, pale blue sky to a robin’s egg tone or a deep azure that conjures images of Caribbean waters.