San Francisco biotech company Pembient is developing a synthetic rhino horn.
Rhinos are being poached in record numbers, and the Californian startup believe an ethical alternative will undermine the black market.
The finished product is expected to be on sale in September.
The process involves fabricating protein that the team claim is identical to the keratin found in rhino horns.
A single horn can fetch $100,000 in Asian countries such as China and Vietnam.
Conservationists have been skeptical over Pembient's plans, fearing this might legitimize the market and increase demand.
A man shows off a piece of rhino horn. From terminal cancer to strokes, rhino horn is seen as a miracle cure-all.
Pembient's method is one of several radical responses to the rhino crisis. The Sabi Sand Reserve, South Africa, are injecting rhino horns with poison dye that turns them pink as a deterrence.
Pembient CEO Matthew Markus (left|) is targeting up to 25% of the $500 million black market, and if successful will move on to elephant tusks, tiger bone, and pangolin scales.
Synthesizing animal products is a rapidaly developing field. Biotech startup Muufri are developing milk without a cow.
Printed horns will be followed by printed teeth for humans, as with this set from Stratasys.
The next step is living tissue. Organovo are printing human liver samples for drug testing, and will soon be producing skin.