A q u a p r a s e
3.03 ct
Round Cut
9.90 mm
Origin:
Africa
max6186

In 2015 a new type of chalcedony appeared in the marked and scientific gemological test proved that it is natural, untreated.The absorption spectrum shows the composition is different compared with gem-silica or chrysoprase:

he color may be caused by chromium and nickel.It comes from Africa ,but the exact location is still a secret.