Pendant & Chain – Tsavorite & Diamond Trefoil
A modern pendant principally featuring one trilliant-cut tsavorite¹ garnet in a yellow gold-coloured tripled claw setting, surmounted with a trefoil of white gold-coloured claw-set round brilliant-cut diamonds suspended from an articulated bale. Employing a yellow gold filed curb chain secured with a bolt ring clasp. Circa 2000-2010.
Detail of the Setting and Chain.
Measuring: 16.70mm x 6.21mm.
Unhallmarked: tested and valued as 18ct gold.
Measuring: 405.00mm x 1.30mm x 0.70mm.
Hallmarked: 9ct gold, London, 2002.
Sponsor’s mark: ‘C&F’ (Cropp & Farr).
Assessment of the Gemstones.
Cut: triangular outline brilliant-cut crown over Portuguese-cut pavilion.
Measuring: 5.06mm x 5.28mm x 2.72mm.
Calculated weight: 0.47cts.
Colour: strong green (2.5G.10/5).
Average measurement: 1.70mm.
Estimated total weight: 0.06
Average colour: G/H.
Average clarity: SI2/I1.
Gross weight: 3.56g.
¹. Tsavorite is a species of green garnet known as grossularite. It became known to the larger world only in the 1960s when Campbell Bridges happened upon the exceptional, bright green stone while on an expedition in search of other minerals in Tanzania. Exporting stones from Tanzania was difficult at the time, but the vein was traced into Kenya where it could be registered, mined and exported. The exquisite gems caught the imagination of Henry Platt, then head of Tiffany and Co. a company with a long history of promoting new and spectacular gemstones, who named the stone after Tsavo, the famous National Park, on the border of Tanzania and Kenya (Vladyslav Y. Yavorskyy, ‘Gemstones’, 2017).
Green grossular, a very beautiful stone, has features that surpassed those of the emerald. The green garnet has a much higher index of a fraction, which results in superior brilliance, tends to greater transparency, and occurs with fewer inclusions. Green grossular is extremely rare, and fine stones over five carats are considered collectors’ items (Peter Bancroft, ‘Gem & Crystal Treasures’, 1984).