How do treatments and enhancements, such as heat treatment or irradiation, affect the appearance and market value of colored gemstones like sapphires and emeralds?

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on June 09 2025 at 10:39 PM in Jewelry & Precious Stones - Other

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How do treatments and enhancements, such as heat treatment or irradiation, affect the appearance and market value of colored gemstones like sapphires and emeralds?