Don't struggle to get to grips with the polariscope on your own.

Use videos, stones and practical help, not books and the internet!

We have distilled our decades of knowledge and practical experience to produce you the perfect set of stones. This will help you learn to use the polariscope, and apply that skill. Whether you're studying gemmology, learning practical gem testing, or a working valuer or jeweller. You get a set of 15 stones, all labelled with the identity, and the key observations you should make. There will also be a video of the reaction for each stone so you know what you're looking for. Once you've built your confidence, you can then use them as an ongoing reference resource to compare and contrast stones you are testing.
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What's in the set

You get a set of 15 stones, all labelled with the identity, and the key observations you should make. There will also be a video of the reaction for each stone so you know what you're looking for. Once you've built your confidence, you can then use them as an ongoing reference resource to compare and contrast stones you are testing.

  • 6 singly refractive gemstones

  • 6 doubly refractive gemstones that show key interference figures.

  • Of the doubly refractive stones 3 will be uniaxial and 3 will be biaxial.

  • 3 polycrystalline gemstones

Online help you get

  • 1

    Intro & Instructions

    • How to use this set
  • 2

    Some help with basic reactions

    • Some examples of singly refractive reactions (apologies for audio quality - old video but I thought it was more helpful to include than leave out - this is all bonus material!)

    • Some examples of doubly refractive and polycrystalline reactions
  • 3

    Singly Refractive Reaction Stones

    • PSS-1 Examples of glass reaction

    • PSS-2 Examples of CZ reaction

    • PSS-3 & PSS-4 Examples of garnet reactions

    • PSS-5 Examples of opal reactions

    • PSS-6 Examples of Synthetic Spinel Reactions
  • 4

    Doubly Refractive Reaction Stones

    • PSS-7 Examples of sapphire reactions

    • PSS-8 Example of aquamarine reaction

    • PSS-9 Examples of quartz reaction

    • PSS-10 Examples of topaz reaction

    • PSS-11 Example of tanzanite reaction

    • PSS-12 Example of kyanite reaction
  • 5

    Polycrystalline Reaction Stones

    • PSS-13 & PSS-14 Example of carnelian and jadeite reaction

    • PSS-15 Comparison of agate and emerald reaction