Non-nacreous Natural Pearl--"The Giant Clam Pearl", Tridacna gigas, Coastal waters near the Philippines. Photo Bonhams.

A slightly baroque drop-shaped, undrilled, non-nacreous natural pearl from a marine mollusk, white with fine flame structure. Weighing 21.437 carats (85.75 grains) and measuring approximately 13.35 -13.35 x 19.05mm. Estimate US$ 9,000 - 11,000 (€6,500 - 7,900)

Accompanied by an SSEF (Swiss Gemmological Institute) Test report no. 72785 dated 25 February 2014 stating that the slightly baroque drop-shaped, undrilled pearl is a non-nacreous natural pearl from a marine mollusk, white with fine flame structure, measuring approximately 13.35 -13.35 x 19.05mm

Bonhams. GEMS, MINERALS, LAPIDARY WORKS OF ART AND NATURAL HISTORY. Los Angeles, 20 May 2014 10:00 PDT - www.bonhams.com