Hi Paul... thank you for your interest.
I believe you're right -- lead content (and proper cutting) increases the light refraction properties of the piece.

(Showing off my new word here). The lead also gives the crystal its beautiful ring. Unfortunately, my vase is almost half matt which reduces its 'sparkabilty' somewhat. As for the base: There is a star cut into a circular shiny 'island'. The island appears slightly taller than the part around it, but sits flush to the base's rim. (In other words, the rim tapers/slopes towards the center of the piece. At the center, there is that island, which is a bit taller...). Am I making any sense? :huh:
The vase is very obviously hand-cut as the patterns are 'imperfect' and each slightly different from the next... this is especially visible towards the bottom of the vase. Oh, and did I mention the beautiful ring it makes???
