08/06/2025
Interesting and fascinating observation
“Tree rings” in diamonds? 🌳 Under deep UV illumination, type Ia diamonds—which make up roughly 99% of all natural diamonds—often show internal growth patterns that look like tree rings.
Here’s what we can learn from this diamond’s “tree rings”:
- These growth patterns form as the diamond crystal develops deep in the Earth, recording changes in pressure, temperature and chemistry over time.
- The presence of nitrogen atoms and vacancies in the crystal lattice gives these diamonds their unique fluorescence pattern. Blue fluorescence typically results from three nitrogens and a vacancy, while green is linked to two nitrogens and a vacancy.
- These nitrogen arrangements contribute to a diamond's color (often yellowish or brownish tones) and fluorescence. They even affect how it reacts to advanced imaging tools like the DiamondView, which reveals the hidden growth structure and helps identify whether a diamond is natural, treated or laboratory-grown.💎🌍
Have you ever seen a diamond’s growth rings?
