Across
- 2. : an instrument able to determine isotropy or anisotropy in gemstones
- 4. : the chemical element giving rubies their red color and emerald their green one
- 6. : a very famous mine of emeralds in Colombia
- 8. : the most popular cut in diamonds
- 10. : the well-known inventor of cultured pearls
- 11. : the chemical element mainly composing diamonds
Down
- 1. : the mineral family of rubies and sapphires
- 3. : an orangey marine animal long mistaken to be a plant
- 5. : an Asian country long famous for its rubies
- 7. : a Northern region of India and Pakistan known for the best color of sapphires
- 8. : name for irregular shape pearls
- 9. : the most beautiful turquoise producing country