From The Gemology Project
Plato_immersion.png (187 × 240 pixels, file size: 12 KB, MIME type: image/png)
Illustration of the "becke lines" in the Plato immersion technique. By Doos.
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|current||07:39, 25 September 2007||187 × 240 (12 KB)||Doos||Illustration of the "becke lines" in the Plato immersion technique. By Doos.|
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