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."
- 925 sterling silver apatite stone necklace
- Stone: Apatite
- Keywords: Thinking, Focus
- Beads: Sterling Silver and Chinese Glass
- Chain: Sterling Silver
- Length: 16 & 18 in. (16 in. shown on image)