Minerals

30 January 2014

International Year of Crystallography

• Commemorative
• Chemistry
• Geometric Shapes

Rs. 20 SG 2996

4 March 2001

Geological Survey of India

• Commemorative
• Anniversaries and Jubilees
• Minerals

Rs. 3 SG 1993

20 December 1980

Centenary of Kolar Gold Fields, Karnataka

• Commemorative
• Anniversaries and Jubilees
• Industry

Rs. 1 SG 990

20 March 2022

Amethyst

• Commemorative
• Conferences
• Geology

Rs. 5 SG 3810