Source your opal earrings direct from jewellery manufactures.
most opal earrings are made from sterling silver or gold and opals are doublets ,triplets or solid opals and most are for pierced ears
It is hard to find matching opals for earrings, especially solid opals like black opals and boulder opals so opal wholesalers have to hand select matching sets from bulk parcels just to match few similar opals .