We have some at Rings & Things but they are not pictured on line. We have horn shaped beads in dyed red coral, possibly in dyed purple bamboo coral, in black onyx and some multi color and banded agate. These are thing we have in small quantity that we show in the showroom and take to our trunk shows. You can call us at 1-800-366-2156 and ask for details.
Other places that might have horn shaped gemstones include earthstone.com, wondersource in NYC, Jewelweaver and possible FMG. Some places might refer to them as tooth shape or group them with the "claw" shape.