Mineral!

　

Hope Diamond. 45.52 Carats. India.

　

Left : Beryl. 15,256 Carats. Minas Gerais, Brazil.
Right : Quartz. 590Kg. Otjua mine, Karibib, Namibia.

　

Left : American Golden Topaz. 22,892.5 Carats. Minas Gerais, Brazil.
Right : Topaz. 12,555 Carats. Minas Gerais, Brazil.

And others.

　　

　　

　

from The National Museum of The Natural History - Smithsonian Institution,
Washington, D.C., the USA