About gemdatID
Opal
Specimen ID:
BC-EX7-4G
Gem(s)
Opal
:
SiO
2
·nH
2
O
Locality
Mindat locality:
Mexico
Dimensions
weight: 1.36 carats
�
�
�
×
Photos
Certificates
Add a new certificate
Description
Size: 8.1 mm.
Previous data
Mineral(s)
Opal
Michael Gray (2)
Log in to comment/edit
Your email
Your password
Submit
Other options
Add a photo of this specimen
Report duplicate gemdatid
3,420 gemdatids have been issued as of 11th Dec 2025 10:37 pm UTC
