Crystal & Stones

Diamond-bearing kimberlite rock specimen; Woudloper, CC BY-SA 1.0 — Roosters Peacock crystal guide
Kimberlite: The Stone of Deep Earth, Transformation & Hidden Potential
Kimberlite is a deep-origin ultramafic volcanic rock best known because some pipes transport diamonds from the mantle. Explore its geology, symbolism, and care. Read more...