itw3ak
0
- Joined
- Jul 7, 2009
- Messages
- 41
- Points
- 6
Your welcome itw3ak;584681, I came about much of what I know of gems and diamonds, from going to the shows and conventions and asking questions, in the early 60's I started making jewelry in addition to collecting rocks and gems, (I was quite fond of crystals early on), and later I went to GIA and Rancho Santiago "Gemology colleges", as, I find gems and minerals fascinating, and it seems, there are quite a few minerals and gems that fluoresce.
I think in rocks and minerals daguin is a great person to use for questions, btw.
Many sapphires will glow and from my experience most good rubies and emeralds do too, some things will glow in shorter wavelength light (notably rock salt from the Calif. salt flats0, and much less or not noticeably in long wave.
There are also several simi-precious stones that glow, (calcite, amber, opal an Sugilite & Kunsite come to mind), and there are many more
Dave says he knows on no long wave glowing materials tht a BR laser will not make glow, and this is so far true in my experience too. I hope this exploration goes on, and I do caution that there is ome confusion and mis-information about. Some maybe many folks do not know phosphorescence form fluorescence for example, but I hope we get more good information here as we go along. Thanks & Best Wishes! -Glenn
Nice, I have a buddy that is a Lapidary and he is always going on trips to Arizona, up-state New York etc. and bringing back trilobites, herkimer diamonds, gems etc. And speaking of the fluorescence of stones and blu-ray lasers, what the heck is a 405nm wavelength in comparison to the short wave or longwave UV lights used in gemology etc??
Also I just found an old Calcite Rhob (identified by Daguin lol) that has an awesome orange fluorescence and even phosphorescence after exposure! Ive had the thing for 20+ years and had no idea it could look so cool. I have some pix posted if anyone would like to see?
Picasa Web Albums - Tw3ak - Crystal
its hard to capture the effect but you will see in some of the 3 shot bursts that it holds the orange glow for a second or two.
Also video here:
YouTube - phosphorescentCrystal
I just got another Calcite Rhomb off ebay quite a bit larger but it fluoresces a bright yellow and only holds the glow a brief split second or two.