Gold pectoral inlaid with a green jade. 14 cm long, 5 cm wide. Late 3rd – beginning of the 4th century. From the Tomb 2 at Fangshen, Liaoning Province, China.
The Jin Dynasty(266-420) Crescent-shaped Gold Ornament Inlaid with Jade. Unearthed from Fangshencun Beipiao, Liaoning Province, China.
Liaoning Provincial Museum collection
pp. 59-60, 223
https://core.ac.uk/download/pdf/76382599.pdf
Leaves that Sway: Gold Xianbei Cap Ornaments from Northeast China, Sarah Laursen
“Aside from the cap ornaments, it is worth noting the presence of a 5.5 inch long crescent-shaped plaque (Figure 2.13) that — judging from the sets of four holes at the upper edges — may have been worn as a pectoral. The sheet gold is thicker than usual and inlaid with a rectangular piece of mottled green jade, which is secured in place by a plate fastened with rivets. On either side of the jade are engraved images of winged animals that the excavation report identifies as phoenixes. The edges of the plaque are lined with large bosses, which in turn have several tiny bosses protruding from them. Crescent shaped pectorals like this one appear in a variety of media at the same sites where gold cap ornaments have been discovered. Sun Guoping suggested a late third to mid-fourth century date for Tomb 2 at Fangshen“
三 燕 金 属 製 装 身 具 の 研 究 Santsubame Metal jewelry research, Otani Ikue https://irdb.nii.ac.jp/01288/0000250815
A chest decoration [a broad collar] with both ends of the crescent moon cut off was excavated at two grave burials in Liaoning province, the Twelve Brickworks Grave No. 9022 and the Fusamimura Grave No.2.