Set at one end with three half pearls and two turquoise cabochons measuring approx. 2.7mm, centered by a Round faceted amethyst measuring approx. 2mm, in the form of a pansy, at the other end with a turquoise cabochon measuring approx. 2.5mm, fashioned in 14k yellow gold (pin stem is not gold). Circa 1835. Halley's comet has appeared periodically throughout history. The 1835 and the 1910 return inspired commemorative jewelry, usually pins.