Bryce Colwell Collection This one is a true oddity from Elmwood. A rather frothy mass of purple fluorite with a ribbon of quartz running through it is placed on a bit of black sphalerite matrix. The odd part of the specimen is the three gemmy crystal “corners” jutting out of the crude cubic crystals that compose the mass of the specimen. There are several areas with light bruising on the fluorite and sphalerite.