It could be the old collection of Mr. And Mrs. Nixon.: hetian Bai Yuchan pieces21.4 grams, 1.4 CM long and 4.3 CM wide and 2.4 CM thickJade cicada hetian jade material, delicate jade.The overall flat, round eyes bulge outward, double vein lines norm, fine workman, heavy andplicated for the typical characteristics of jade cicada.Jade cicada has always been a symbol of the ancients to the yu jie, cicadas in the minds of the ancients status is very high, has long been considered a symbol of high purity, and channeling.