Geologists believe that the diamonds in all of Earth's commercial diamond deposits were formed in the mantle and delivered to the surface by deep-source volcanic eruptions.

Apr 11, 2023 · Diamonds can be made in multiple ways you may not have known, let’s see how. 100 miles deep in the Earth, a layer separating our hospitable exterior from the molten core, …

Nov 12, 2025 · In nature, diamonds are created within Earth’s mantle at depths exceeding 120 kilometers (75 miles) where temperatures soar and pressures are immense. Over billions of …

Jul 16, 2025 · How are diamonds formed? Explore their fascinating billion-year-old origins from deep in the Earth and debunk myths with scientific facts.

In diamonds, each carbon atom is bonded to 4 other carbon atoms, while in graphite, each atom is only bonded to 3 other carbon atoms. The bonds in diamonds are held in such a tight …

Diamonds were formed over 3 billion years ago deep within the Earth’s crust under conditions of intense heat and pressure that cause carbon atoms to crystallise forming diamonds. Diamonds …

Aug 5, 2025 · Learn how natural and lab-created diamonds are made, how they compare, and which is right for you. Explore key differences in formation, cost, value, and more.

Sep 19, 2023 · Most diamonds are formed deep within the Earth’s mantle, where high temperatures and pressures transform carbon-containing materials into diamonds. This …

May 20, 2025 · Uncover how diamonds are made naturally and in labs. Learn about carbon, pressure, time, and where diamonds come from.

Aug 7, 2025 · Discover how diamonds form deep within the Earth over billions of years, and how lab-grown diamonds are made using modern technology.