MARCUS & CO: SAPPHIRE AND DIAMOND BROOCH/PENDANT, EARLY 20TH CENTURY
The central oval-cut sapphire within an openwork quatrefoil border of floral and foliate motifs, millegrain-set throughout with old brilliant and single-cut diamonds, sapphire stated to weight 9.29 carats, length 4.5cm
Footnotes:
Accompanied by a report from The Gem & Pearl Laboratory stating that the sapphire is of Sri Lankan origin with no indications of heat treatment. Report number 22027, dated 19th August 2022.

Accompanied by a report from Lotus stating that the sapphire, weighing 9.29 carats, as stated by the client, is of Burmese origin with no indications of heat treatment. Report number 9231-9880, dated 17th January 2022.

Accompanied by a report from AIGS stating that the sapphire, weighing 9.29 carats, as stated by the client, is of Burmese origin with no indications of heat treatment. Report number GF21031856, dated 30th March 2021.

Accompanied by a report from GRS stating that the sapphire, weighing 9.29 carats, as stated by the client, is of Burmese origin with no indications of heat treatment. Report number GRS2015-111305 dated 17th November 2015.

The sapphire is a vivid and highly transparent medium blue gem of rich saturation. Under 10 X magnification, two feather inclusions and a small area of silk inclusions seen. Reverse of sapphire collet signed Marcus & Co. Clasp stamped 14K. Untested white and yellow metals with light surface wear. Spots of old solder to both ends of pin fitting. Overall in good condition. Gross weight approx. 13.0 grams.