Vintage larger 23mm long West German Lapis Lazuli (color marked on package) glass cabochon. It is an irregular shape and rounded on both sides. One side is a more solid darker blue, and the other is more mottled. You could use either side. They are from the 1950s. Perfect, never seen the light of day condition. We found these on a recent trip to the northeast to a warehouse that has not seen the light of day for many years.
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