Leading institute for gem and jewellery education.
Visionary leaders shaping jewellery education and growth.
50 years of trusted industry excellence.
Strong industry and academic partnerships worldwide.
Empowering students with global skill-based education.
Gemstone Hardness Chart is based on the Mohs scale of hardness, which measures a mineral’s resistance to scratching (1 being the softest and 10 being…
Remember Me
