Moderate difficulty suitable for most players
Exquisite Enigmas: Obscure Jewels & Minerals
Challenging puzzle for experienced crossword solvers
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Across
- 1. Cobalt-rich silicate mineral named for an American steel city
- 2. Delicate pink-violet variety of spodumene named after a pioneering mineralogist
- 4. Luxe calcium-magnesium-aluminum borosilicate found only in Sri Lanka’s gem deposits
- 8. Bright orange-lead molybdate mineral prized by collectors with tabular crystals
- 9. California's rare fluorescent blue treasure named after a saint
- 12. Greenish uranium phosphate mineral with radioactive notoriety
Down
- 3. Rare niobium- and titanium-bearing mineral from Russia's Kola Peninsula
- 5. Inconspicuous manganese-bearing silicate first identified in volcanic environments
- 6. Meteoric precious alloy combining iron-nickel with olivine crystals
- 7. Tektite known as Bohemian glass, born from cosmic collision
- 10. Rare beryllium aluminate famed for cat’s eye optical effect
- 11. A rare gem bridging spinel and chrysoberyl in complex lattice
- 13. Wedge-shaped crystal whose name echoes its axe-like cleavage
- 14. Elusive beryllium silicate whose name means 'easily broken'
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- Explore the world of rare gemstones and minerals with clues that shine light on nature's most elusive treasures.