Maker: possibly Chaumet
Platinum and 18k yellow gold, center Old European cut diamond (approximately 0.95ct, SI2/K, grading limited by mount) within a surround of 16 calibré cut rubies (approximately 0.25ct TW), rose, single and antique cushion cut  diamonds mounted in scalloped rim and shoulders (44 diamonds approximately 0.25ct TW), marked "1138" and with French eagle's head warranty mark, partial maker's mark, mounted weights established by formula.