Corundum (var: Sapphire) (doubly terminated "floater" crystal) caddisfly deep reddish-black groups of Sphalerite

deep reddish-black groups of Sphalerite are smartly perched atop a “mound” of HIGHLY lustrous

and it's really pretty when viewed up close

the word Knappenkees is possibly a reference to the Lappenkees (Lappen Glacier)

The "arms" of the twins are well-developed and with strong backlighting on the edges

Corundum (var: Sapphire) (doubly terminated "floater" crystal) caddisfly deep reddish-black groups of SphaleriteSome of the finest quality crystals of Sapphire in the world are those from various localities in Sri Lanka. The combination of excellent sharp, euhedral crystals along with a beautiful range of colors puts them in the upper tiers for Sapphire crystals from anywhere. This piece is a fine quality, very sharp (not rounded or water worn), rather lustrous, well formed, euhedral, hexagonal, striated, doubly terminated "floater" crystal with a lovely blue