sunstone

/ˈsʌnstoʊn/
noun
  1. A type of feldspar mineral that has a sparkling, golden or reddish shimmer, often used as a gemstone.
    • Sunstone is popular in jewelry because of its warm, glowing appearance.
    • The ring featured a sunstone that caught the light and sparkled.
    • She wore a beautiful necklace with a polished sunstone pendant.
  2. A type of translucent stone believed by some to have been used by ancient Vikings as a navigational aid to locate the sun on cloudy days.
    • Some historians think Vikings used a sunstone to navigate across the Atlantic.
    • Legends say the sunstone helped sailors determine direction even when the sky was overcast.
    • The museum displayed a replica of a Viking sunstone used for finding the sun.
Synonyms
What does "sunstone" mean? | whatsthatwordmean | whatsthatwordmean