Crystal Substitutes

As you may or may not be aware, crystals are currently rather contentious in certain corners of the internet.

Therefore, for those of us wishing to remove all crystals from our Rings of Power, Amulets of Might, &c, I have hastily composed the following table of substances that may be put in their place.

1. Amber
2. Jet
3. Pearl/Nacre
4. Ebony/other exotic wood
5. Ivory/Bone
6. Horn/Claw/Tooth (cut to shape or au naturel)
7. Hair/Fur (in a suitable sealed container)
8. Scale (dragonscale particularly desirable)
9. Brightly coloured plumage/butterfly wings (in suitable sealed container)
10. Skin (in a suitable sealed container)
11. Tiny oil painting
12. Polished stone (none-precious)
13. Petrified wood
14. Calligraphy on paper (in a suitable sealed container)
15. Porcelain
16. Enamel
17. Stained glass
18. Millefiori
19. Mirror
20. Two of the above; roll again

Roll 1d20: or, if you feel that amber, jet and pearl are crystalline by association, broaden the 'Roll again' option by two.

Better than any crystal.
[Source: http://webapps.fitzmuseum.cam.ac.uk/explorer/index.php?qu=roman%20glass&oid=28432]