Image 1 of 1 Mona Boulder Opal Earring $1,499.00 Handcrafted from ecologically sustainable reclaimed & refined sterling silver & 9ct yellow gold. Our natural gemstones are ethically sourced in Australia. 2 x 20mm x 10mm rectangle solid Eulo boulder opals Finished weight 10.53gm Australian Made in Moffat Beach on Queensland's Sunshine Coast. 25 year written guarantee with free aftercare plan. Add To Cart Added! Handcrafted from ecologically sustainable reclaimed & refined sterling silver & 9ct yellow gold. Our natural gemstones are ethically sourced in Australia. 2 x 20mm x 10mm rectangle solid Eulo boulder opals Finished weight 10.53gm Australian Made in Moffat Beach on Queensland's Sunshine Coast. 25 year written guarantee with free aftercare plan. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More