Beautiful Art Nouveau lady brooch, not hallmarked and XRF tested to be 12 carat gold, weighing 4.1 grams with a delicate small white topaz flower stamen. Measuring approximately 28mm by 27.8mm with a stone around 2mm, this exquisite piece showcases intricate craftsmanship. Possibly Russian in origin, it features a distinctive pigtail on the reverse and may have been part of a larger ensemble.