This is a large classic Japanese akoya saltwater cultured pearl mid-century modern baroque drop pendant necklace. 

If features a single, lustrous, pearl measuring 9.50mm. It is good quality and has rosy pink overtones. It is a drop/baroque shape. 

It is set in solid 14K white gold and is stamped "K14WG" on the pendant bail. Comes with a solid sterling silver chain, which is not stamped. It measures 18.50 inch. Mid-century Japan.

All pearls are truly vintage and have only been lightly cleaned.