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BY F. M. JAEGER (Groningen). BY F. M. JAEGER (Groningen). Received 3oth January, I929. I. From early days the azure-stone or lapis lazuli has been one of the most highly esteemed half-gems. The ancient Babylonians and Assyrians valued it highly, comparing this dark blue stone-interspersed with spangles o
F. M. Jaeger (Tue,) studied this question.