The pendant centring on an oval conch pearl, to an openwork surmount embellished with variously-shaped diamonds, anchored by a pear-shaped paraiba tourmaline weighing 1.69 carats, to a double chain necklace intervalled with collet-set brilliant-cut diamonds, mounted in 18 karat white gold. Length approximately 480mm.
Conch pearl measuring approximately 22.27 x 14.65 x 13.67mm.

GIA report numbered 1287780383, 24 April 2018, stating the pearl is 32.72 carats, natural saltwater, light pink and pink colour, no indications of treatment;
GIA report numbered 7261255079, 18 July 2017, stating that the tourmaline is 1.69 carats, natural, Greenish Blue colour, with a comment stating this copper and manganese bearing tourmaline may be called 'paraiba tourmaline' in the trade.

CONCH PEARL
A conch pearl is non-nacreous, which means they are not made of nacre but calcareous concretion produced by the Queen Conch mollusk (Strombus gigas) which lives primarily in the Caribbean. They often exhibit a flame-like structure unlike the iridescent lustre from traditional pearls and are highly valued for their rarity, beautiful colour and porcelain-like luster. Less than 10% of the pearls out of 15,000 shells are gem-quality; thus a bigger size or a matching pair in good size and excellent colour is hard to come by.

Price estimate:
HKD: 350,000 - 480,000
USD: 44,900 - 61,500

Auction Result:
HKD: 413,000