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Fine-quality rubies have gradually increased in value per carat

Of all the coloured gemstones, rubies can fetch the greatest prices. Fine-quality rubies have been steadily increasing in Pigeon Blood Ruby price per carat, frequently surpassing previous auction records. In the case of superior-grade material, minute variations in colour might translate into substantial variations in value.

https://www.takatgemssr.com/blog/fine-quality-rubies-have-gradually-increased-in-value-per-carat.html

Fine-quality rubies have gradually increased in value per carat