猜猜这毛毛线是做什么滴。。。。。

压力和温度都再高点 隔绝活泼气体 直接压出人造钻石表壳 AP加把劲！

查了下维基百科，HPHT法（高温高压）想压出钻石所需的温度和压力和做这表壳的温度压力要求完全不在一个数量级上。。。看来道路还是很曲折滴啊！
如下图制作出的成品体积非常有限，且没有使用任何成型模具的可能：

The BARS apparatus is the most compact, efficient, and economical of all the diamond-producing presses. In the center of a BARS device, there is a ceramic cylindrical "synthesis capsule" of about 2 cm3 in size. The cell is placed into a cube of pressure-transmitting material, such as pyrophyllite ceramics, which is pressed by inner anvils made from cemented carbide (e.g., tungsten carbide or VK10 hard alloy).[43] The outer octahedral cavity is pressed by 8 steel outer anvils. After mounting, the whole assembly is locked in a disc-type barrel with a diameter about 1 meter. The barrel is filled with oil, which pressurizes upon heating, and the oil pressure is transferred to the central cell. The synthesis capsule is heated up by a coaxial graphite heater and the temperature is measured with a thermocouple.[44]