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Posted By: davidcycleback

If you have a display that blocks out most of the full spectrum of UV light, you can probably display it where you wish, within reason. You still want to be prudent with light use, for example turning off the lights in the room when you are not there or putting a cloth over the display when you are not there for the day. Even with the preservation glass, there's no point in shining bright lights on the balls for 20 hours when no one's even in the room.

I've read about the different kinds of conservation glass and plexiglass-- expensive to cheap, each advertising it blocks UV. The least effective-- the one that ranked lowest on the protection totem pole-- blocked 93 percent of UV, which is a good amount of protection.

I'm conservative and a 'better safe than sorry' about these exposing to the elements issues, but conservation glass does indeed give a lot of protection.