Surname พลอยบริสุทธิ์ (พลอยบริสุทธิ์ 
) , throughout the world, is a very rare family name. The cognomen พลอยบริสุทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พลอยบริสุทธิ์ | Thailand |