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This is especially valid to possess black colored opals and you will boulder opals, which can demand premium costs. Has just, there has been an increasing need for highest-top quality opals, for example people who have exceptional color gamble and you may novel habits. Simultaneously, durability and you may moral sourcing are extremely tips, impacting how opals is actually mined and you may exchanged. Continue Reading Opal Jewels: essential hyperlink Well worth, Rate, and Precious jewelry Advice IGS