2001: 3D Mineral. Two stamps with slight differences. Presumably you need 3D glasses to appreciate.
Minerals Represented: Fluorite.
Mineral Stamps from Slovenia
Denomination/Country/Mint etc
Brass (1)
Bronze (2)
Coins and Tokens (78)
Copper (10)
Counterfeit (4)
England (Pre 1707) (9)
Farthing (3)
Fifty Cents (1)
Five Cent (7)
Gaming Token (2)
Gold (1)
Great Britain (1707 onwards) (26)
Halfcrown (2)
Halfpenny (5)
Hammered (10)
Heaton Mint (29)
Japan (1)
Kings Norton Mint (1)
London Mint (1)
Minium (1)
One Cent (3)
One Dollar (1)
One Double (1)
One Millieme (1)
Penny (38)
Proof (4)
Quarter Anna (1)
Replica (4)
Silver (11)
Stamps (69)
Stamps - Fossils (1)
Stamps - Gems (11)
Stamps - Geology (5)
Stamps - Minerals (55)
Stamps - Mining (12)
Stamps - Waterfalls (2)
Ten Cent (2)
Ten Sen (1)
Token (10)
Twenty Sen (1)
Two Cent (1)
Twopence (2)
Unit (1)
White Metal (3)
York Mint (1)