Diamond is a solid form of pure carbon with its atoms arranged in a crystal. Solid carbon comes in different forms known as allotropes depending on the type of chemical bond. The two most common …

Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.

May 15, 2026 · A diamond is a mineral composed of pure carbon. It is the hardest naturally occurring substance known; it is also the most popular gemstone. Because of their extreme hardness, …

Join us in historic Philadelphia and cherry pick through our extensive inventory of, natural and lab, loose diamonds and finished diamond jewelry. At GN, buying diamonds is much more than a certificate.

Comprehensive natural All diamond price guide. Compare prices across all carat sizes and quality grades. Find the best deals updated daily.

Dec 22, 2025 · Diamond trading and investment is a multi-billion dollar industry, with major diamond centers located in cities such as Antwerp, Dubai, and Mumbai. Overall, diamonds are highly valued …

Diamond's unique properties make it suitable for many different uses including: gemstones, cutting tools, heat sinks, wear-resistant parts, low-friction bearings, specialty windows and lenses, speaker domes, …

Not sure the size of a particular diamond based on its carat weight? Our helpful guide breaks down diamond sizes by diamond shape and millimeter (mm) size.

Discover the origin, rarity, and timeless appeal of natural diamonds. Learn how natural diamonds are formed and why they remain a symbol of lasting value.

Jan 18, 2022 · Diamonds are the most sought-after and admired gemstones, with a sparkling brilliance that sets them apart from all other jewelry. That’s as true today, when diamonds are mined on an …