Fine Orange-Pink Tourmaline, Madagascar. Estimate US$ 3,500 - 4,500 (€3,100 - 4,000). Photo Bonhams.

Expertly faceted as a circular brilliant, this fine gem-quality tourmaline exhibits changing hues of pink and orange with slight purple flashes. Both its clarity and luster are exceptional. Weighing approximately 49.75 carats and measuring 23.0 x 15.5mm

Bonhams. LAPIDARY WORKS OF ART, GEMSTONES AND MINERALS INCLUDING GOLD, 19 May 2015 10:00 PDT - LOS ANGELES