The crucible has good thermal stability, suitable for emergency heat or cold usage condition. It can melt gold, silver, and other precious metals and other alloys,with . It is widely used in the chemical industry, pharmaceutical industry and laboratories. Features - Color: White. - Material: Ceramic. - Size: 7.00X7.00X7.00 cm/2.75X2.75X2.75 inch. - Capacity: 70ml. - Made using modern ceramic processing technology, mainly used in alloys, , gold and other high-temperature melting alloys. - High temperature over 1800 degrees, high purity, corrosion resistance, high strength, high heat-resistant, high shocks resistance. - Great for those who are using a torch method to melt down their materials. - Good corrosion resistance to ensure product quality and reliability, durable and wonderful. - Good heat conduction properties, can greatly shorten the melting time, save energy. Package list: 4 x Crucibles