Ruby and garnet on biotite

This model combines rubies and garnets embedded in a biotite matrix. The rubies, visible here in shades of pink to red, are forms of corundum highly prized for their vibrant color and hardness. Alongside, garnets typically come in a color range from deep red to violet. Biotite, a black or brown mineral, contrasts with these gemstones, highlighting their brilliance. This type of natural assemblage is often mined in Asia, particularly in India and Sri Lanka.

The size of this stone is approximately 4 cm.