John Chapman

Showing all 9 results

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  ID of Blue Gems with Portable Instruments

  USD $40.00 Add to cart
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  ID of Blue Gems with Portable Instruments (Digital Download)

  USD $20.00 Add to cart
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  2022 – “Beyond Fluorescence for ID Testing”

  USD $0.00 Add to cart
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  Fluorescence as a Tool for Diamond Origin Identification – a Guide

  USD $35.00 Add to cart
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  Fluorescence as a Tool for Diamond Origin Identification – a Guide (Digital Download)

  USD $15.00 Add to cart
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  ID of Green Gems with Portable Instruments

  USD $25.00 Add to cart
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  ID of Green Gems with Portable Instruments (Digital Download)

  USD $15.00 Add to cart
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  ID of Transparent Red, Pink, and Purple Gems with Portable Instruments

  USD $25.00 Add to cart
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  ID of Transparent Red, Pink, and Purple Gems with Portable Instruments (Digital Download)

  USD $15.00 Add to cart