SSEF Facette 2021

I N T E R N A T I O N A L

I S S U E

N 0 . 2 7,

J U N E

2 0 2 1

SCIENTIFIC GEMMOLOGY / AFGHAN EMERALDS / NEW PEARL SPECIES / AGE DATING / MACHINE LEARNING SSEF AT AUCTION / FREE ONLINE COURSES

1 · FACETTE 2021