The undrilled drop pearl (15.90 x 13.91mm) weighing 21.84 carats with natural body color of orangy yellow and with orient, very good luster and clean surface, with GIA report identification of bead cultured pearl, saltwater, Pinctada Maxima (gold-lipped pearl oyster), and with no evidence of treatment.

GIA Report #5172478680 dated February 26, 2016
https://www.gia.edu/report-check?reportno=5172478680&s=1559913123538