Thoughts on some opal

Hey all,

Looking to get some thoughts on some opal jewellery. Quality/Value/Other...
Also maybe a value put on all of the items together..

Australian opal jewellery.
7 rings with single opal triplets various sized opal
45 oval pendants
19 necklaces
17 random pendants
22 gold plated rings 11 with 3 opals 11 with 4
31 glass and silver pendants filled with opal pieces topped with opal triplets with silver chains, chains have tarnish from age as come from my grandmother's craft shop in the 80s pictures dont do them justice
10 damaged glass pendants with chains