The first factor that most people look for when choosing a binocular is magnification. However, there is much more to consider in order to make sure that you are getting the right binocular to suit your needs....
Things to look out for when buying art glass or lampwork beads * Kiln annealed This is a must for beads that won't suddenly break on you. Indian and Asian lampwork beads, as far as general...
Investing in tourmaline is made much easier by the lack of lab imitations, although glass is sometimes sold to the unwary. Tourmaline investment probably suffers most from simply having too many choices....