Researchers placed a speck of iron between two small conical diamonds and applied laser - beam heat and 200 gigapascals of pressure. (discovermagazine.com)
It forms only at pressures greater than about 24 gigapascals — ... (sciencenews.org)
Those crystals would be stable only at pressures of 20 gigapascals, almost 200,000 times atmospheric pressure at sea level on Earth. (sciencenews.org)