Topaz (noun)

1. A mineral, a silicate of aluminum and fluorine, that can be yellow, brown, red, pink, or colorless and is used as a gemstone.
2. A yellow or yellowish-brown color.

Origin:

From the greek word topazos, meaning unknown or uncertain, possibly from the island of topazos.

Examples:

1. She had a beautiful topaz ring on her finger.
2. The topaz necklace was a family heirloom.
3. The topaz mineral is found in many different colors.
4. The topaz color of the dress was perfect for the occasion.
5. The walls were painted in a warm topaz color.