How Old Are Most Diamonds? Between 1 and 3.5 Billion Years Ancient

Diamonds dazzle us with their timeless beauty. But these mesmerizing gems aren‘t just elegant—they‘re also unfathomably ancient. Most natural diamonds originated deep in our planet over 1 billion years ago. Let‘s explore the incredible lifespan of Earth‘s most prized stone.

You may know diamonds form under intense heat and pressure far underground. But the full journey spans an astonishing 1 to 3.5 billion years from raw carbon to sparkling gem.

That means most diamonds predate the dinosaurs, mammals, flowering plants, and even the first single-celled life. They‘ve been crystallizing since nearly the birth of our 4.5 billion year old planet!

Determining a Diamond‘s Vast Age

Geologists use clever techniques to pin down the rough age of diamonds:

• Radiometric dating measures trace radioactive elements like uranium inside the stones. The rate of decay indicates how many eons have passed.

• Studying tiny mineral inclusions trapped inside diamonds provides clues about the environment when it formed. Certain minerals only appeared at certain times.

These advanced methods allow scientists to assign broad age ranges to diamond deposits, usually over 1 billion years old.

Experts can also identify the likely period of a cut diamond by examining its style, cut and facets. For example, an Old European Cut diamond must be at least 100 years old.

The Youngest Natural Diamonds

While nearly all natural diamonds formed over a billion years ago, a rare few are geologically "young" by comparison:

• Impact diamonds from meteorite crashes under extreme pressure. These may be less than 1 billion years old.

• Microdiamonds in oceanic crust dated to around 600 million years old.

• Lab-created diamonds made commercially in the past 60 years. These have identical properties to mined diamonds.

So while most diamonds are primordial, some exceptions formed in less than 1 billion years!

Where Are Diamonds Still Being Discovered?

South Africa long dominated diamond mining. But enormous reserves continue being uncovered across the globe:

• Russia – Estimated diamond reserves up to 650 million carats, the largest in the world. Significant mines in Sakha Republic, Arkhangelsk, the Urals.

• Botswana – Around 300 million carats, ranking 2nd for reserves. Major discoveries in Orapa and Jwaneng.

• Canada – Recent massive finds in the Northwest Territories, including Diavik with 190 million carats discovered.

• Angola – Over 200 million carats across several large deposits, including the Catoca mine.

• Australia – The now-closed Argyle mine was the primary source of rare pink diamonds.

Impressive new diamond troves are still being discovered, even if superficial deposits are dwindling. Advanced technology allows miners to reach previously unattainable depths.

While mining practices must balance ethics and sustainability, global diamond discoveries show no signs of stopping.

Why Old Diamonds Are More Valuable

As natural diamonds grow increasingly scarce, older stones become more coveted and climb in value.

Antique and vintage diamonds over 100 years old are especially prized for their rarity, unique cuts and historical significance. Their value has increased 4-6% yearly.

According to diamond investment advisor Estatediamondjewelry.com:

"As diamonds age from 100 years to 120 years old and we move further away from the 20th century, these old cuts will not only become more scarce but also more valuable."

Untreated diamonds exhibiting their natural color without enhancements also become pricier with age. A 120-150 year old quality diamond can be worth 30-50% more than an equivalent modern stone.

Lab-created diamonds are chemically identical to natural diamonds, but currently sell for 30-40% less. Their low cost reduces demand for extremely old and expensive mined diamonds.

Should You Buy Diamonds as an Investment?

History reveals diamonds gradually increase in value over decades and centuries. But prices also fluctuate in the short term.

The safest strategy is focusing on quality over size, buying well below retail prices. Patience is required to realize substantial appreciation.

Avoid overpaying based on marketing hype. Shop around for independently certified diamonds at competitive prices. Seek stones with timeless appeal.

While past growth doesn‘t guarantee future results, diamonds have proven a relatively stable store of value for centuries. Handle with care, and they can become cherished heirlooms passed down for generations, just as they‘ve dazzled us since the dawn of humanity.