- 925 sterling silver delicate apatite and amazonite necklace
- Stone: Apatite and amazonite
- Keywords: Thinking, focus
- Beads: Sterling silver
- Chain: Sterling silver
- Length: 16 & 18 in. (16 in. shown on image)
Cecilia Payne-Gaposchkin was an astronomer and astrophysicist. It was Payne who first discovered that stars are made primarily of hydrogen and helium. Her colleagues called her thesis: "Undoubtedly the most brilliant Ph. D. thesis ever written in Astronomy."