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21.79ct Colombian emeralds in a 10-piece lot.

These emeralds have minor or moderate oiling, with good color and lustre, and hence excellent fire.

The lot is considered clean for emeralds.

26.7ct blue Ceylon sapphire cabochon with no thermal treatment.

This unheated sapphire measures a generous 19mm by 12.17mm by 10.93mm.

10.59ct natural Colombian with insignificant oiling (F1 - minor oil in GIA terms).

This emerald may be considered paler than typical Colombian emeralds, but when your eyes can pick up almost no oiling you will appreciate what "insignificant oiling" means to the color of an emerald.