Two unusual corundum crystal sections from an old collection, labeled Ratnapura, Sri Lanka. The pieces show distinct hexagonal growth zoning with deep blue outer color and yellow-green centers. Ratnapura is noted as the old collection locality, though it may represent the gem market or district rather than a specific mining location. Interesting collector material showing natural growth structure and color zoning.
2 pieces / 11.970 carats / 14.8 x 11.4 x 2.7 mm
Estimate: $425 - $450
