04-29-2015, 04:03 PM
You could mine enough fluorite and slowly anneal enough of it to make a blank but I'd wager that would take years to make just one and it would probably cost upwards of $10M.
Not to mention you'd get pretty tired carrying it around.
And where're you going to find a UV filter for that?
Not to mention you'd get pretty tired carrying it around.
And where're you going to find a UV filter for that?