John Chapman

Showing all 7 results

2022 – “Beyond Fluorescence for ID Testing”
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Fluorescence as a Tool for Diamond Origin Identification – a Guide
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Fluorescence as a Tool for Diamond Origin Identification – a Guide (Digital Download)
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ID of Green Gems with Portable Instruments
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ID of Green Gems with Portable Instruments (Digital Download)
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ID of Transparent Red, Pink, and Purple Gems with Portable Instruments
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ID of Transparent Red, Pink, and Purple Gems with Portable Instruments (Digital Download)
USD $15.00 Add to cart