algt colored stone identification report identification species .............................................................................................................. natural opal variety ....................................................................................................... bluish gray opal description shape & cutting style ......................................................................... oval, mixed cut measurements .................................................................... 18.10 x 13.06 x 8.96 mm carat weight ...................................................................................................... 8.92 carat color .............................................................................................. bluish gray (yellowish) transparency .................................................................................................. transparent comments no indications of treatment. 06 october, 2025 31368017