Hello,
For "classic" dragon tears, Bluscarlet said everything (except it's level 52).
If you want more informations, there's an article here, when dragon tears appeared in Allods:
http://guilds.en.allods.com/forum/topics…-the-new-spells
(some "new" spells may have changed since feb 2013)
Then i checked allods website, now it tells me i can Combine 100 of these shards to obtain an Eternal Tear of the Dragon of epic quality oh great now i just need 100 to get something i yet Again got no clue what it is or if it has any use of any kind.....
Dragon Tears chests are not in game at the moment, even though the icon is active.
Meanwhile you can read the old news we had when the sale happened a few month ago:
http://en.allods.com/news/sales/box-crystal-tears
To sum up, there's an ingame quest to get a permanent frozen tear of the dragon -blue quality- (collect 700 parts). You can get them by doing daily quests (or weekly ? they changed it recently. As i have finished this quest, i can't check it ingame). Or you can buy chests from the cash shop, to get it faster.
And there's box sales from time to time, to get an Epic permanent dragon tear.