This .925 Silver earrings is sized 30 mm in height x 15 mm in wide

The Doublet Opal is sized 7 mm x 5 mm x 2 mm and the opal weight is 1 carats.

QUALITY DOUBLET OPALS, BOULDERBACK
Type: DOUBLET OPAL - BOULDER BACK
Origin: OPAL CRYSTAL TOP FROM LIGHTNING RIDGE, BOULDER BACK FROM QUEENSLAND, AUSTRALIA .

WHAT IS A DOUBLET AND TRIPLET OPAL?
A thin slice of crystal or light opal is laminated onto a layer of dark material to form a Doublet. The addition of a clear dome of crystal, where the crystal opal is sandwiched between the clear dome and the layer of dark material, makes it a triplet. The clear dome capping gives the opal layer protection.