Green diamond or emerald: a comparison?

Green is the colour of renewal and hope. In fine jewellery, it is embodied by two iconic gemstones. On one side, emerald, the legendary stone of the pharaohs. On the other, green diamond, of an almost mythical rarity. Their colour brings them close. But everything else sets them apart: composition, durability, price, symbolism. At Lauredi, we have made lab-grown green diamond one of our signatures. Here is how to choose between these two green stones for your engagement ring or an exceptional jewel.

Green diamond: rarity that defies nature

Natural green diamond is one of the rarest gemstones in the world. Its colour comes from an exceptional geological phenomenon. The stone is exposed to natural radiation for millions of years. This radiation alters the crystal structure of the carbon. It gives rise to that subtle green hue. Very few specimens reach the “Fancy Vivid Green” category. Those that do trade for tens of millions of euros at auction. This is the case of the Aurora Green, sold for $16.8 million in 2016.

• Composition : pure carbon, with colour centres caused by natural radiation
• Hardness : 10/10 on the Mohs scale, the highest possible
• Brilliance : incomparable brilliance and fire, identical to white diamond
• Rarity : among the rarest coloured diamonds in the world
• Lab-grown version : strictly identical properties, without the footprint of mining

Today, lab-grown green diamond is becoming accessible. It offers an exceptional stone with no ethical compromise. To learn more, read our article dedicated to the rarity of natural green diamond.

Emerald: the legend made real

Emerald belongs to the beryl family. Its distinctive green colour comes from chromium, and sometimes vanadium. It is this deep, velvety shade that is known as “emerald green”. Loved by Cleopatra, revered by the Incas, set into royal crowns—emerald is a legendary gemstone. It has endured through history for more than 4,000 years.

• Composition: beryllium and aluminium silicate (beryl), with chromium or vanadium
• Hardness: 7.5 to 8/10 on the Mohs scale, moderate durability
• Lustre: velvety, with a distinctive inclusion “garden”. In jewellery terms, this refers to the fine natural inclusions that mark the authenticity of each stone.
• Origins: Colombia (the benchmark), Zambia, Brazil, Afghanistan
• Symbolism: rebirth, eternal love, wisdom

Green diamond vs emerald: a direct comparison

These two green stones are not in the same league. Here are the criteria to consider before buying a ring with a green gemstone:

• Hardness and everyday wearability: a green diamond rates 10/10. It can be worn daily without special precautions. Emerald has lower hardness. Its crystal structure is fractured (the famous inclusion “garden”). It is sensitive to impacts, cracks, and temperature changes.
• Brilliance: a green diamond has the legendary brilliance and fire of a diamond, even in a coloured version. An emerald has a deeper, velvety lustre—but without the diamond’s spectacular light dispersion.
• Care: emeralds are often oil-treated to improve clarity. This treatment needs to be renewed every 1 to 3 years. A green diamond requires no special care.
• Rarity: both are rare. But a natural green diamond is incomparably rarer. In a lab-grown version, only a handful of houses offer this colour as a signature.
• Ethics and traceability: emeralds are sometimes mined under opaque conditions. Lauredi’s lab-grown green diamond offers full traceability and a reduced environmental impact.

If you're hesitating between other green gemstones (tsavorite, green sapphire, tourmaline), our complete guide to green gemstones for engagement rings will help you decide.

Why choose a Lauredi green diamond rather than an emerald?

Emerald is sublime—we do not dispute it. But for an engagement ring worn every day, its fragility is a real concern. A simple knock, a household cleaner, a temperature change—and the stone can crack. The green diamond, on the other hand, follows your every movement. Mornings, travel, celebrations, transformations: it endures it all without ever losing its beauty.

The Lauredi green diamond also carries a conviction: you can own a stone of exceptional rarity and unique brilliance without resorting to mining. To understand this philosophy, read our guide on the environmental impact of natural vs lab-grown diamonds.

Our green diamond rings

In our workshop in France, our lab-grown green diamond rings embody an Art Deco, geometric aesthetic, designed to last.

To discover the full range, visit our dedicated page for lab-grown green diamond rings.

Our ethical commitment

Each Lauredi ring is a bespoke creation. It is hand-finished in our workshop in France. It is set with certified lab-grown diamonds. It is crafted in responsibly sourced recycled 18k gold. Complimentary resizing within 30 days. 2-year warranty. Certificate of authenticity. Every detail is designed to make your ring a legacy to pass on. Discover also how to care for your green diamond ring day to day.

Conclusion

The emerald has undeniable historical charm. The green diamond is of absolute rarity. The choice depends on your lifestyle and the promise you want to set into your ring. If you are looking for a durable, radiant, and ethical green gemstone, the Lauredi lab-grown green diamond is the finest that contemporary fine jewellery has to offer.

Our workshop is at your disposal to design with you the piece that will celebrate your story. Engagement, promotion, or a personal milestone: your green diamond ring will reflect you.

FAQ: Everything you need to know about green gemstones in fine jewellery

What is the difference between a green diamond and an emerald?

A green diamond is made of pure carbon with colour centres caused by radiation. An emerald is a beryl whose colour comes from chromium. A green diamond has a hardness of 10/10 and requires no maintenance. An emerald is 7.5 to 8/10. It is often oil-treated to preserve its clarity.

Is an emerald suitable for an engagement ring?

An emerald is sublime. But with a hardness of 7.5 to 8 and its “garden” of inclusions, it is vulnerable to everyday knocks. For an engagement ring worn daily, a green diamond offers far superior durability.

Does a lab-grown green diamond have the same value as a natural green diamond?

A lab-grown green diamond has exactly the same physical, chemical, and optical properties as a natural diamond. Its market value is different because it is more accessible. But its beauty, hardness, and longevity are strictly identical.

How much does a lab-grown green diamond ring cost?

At Lauredi, lab-grown green diamond rings start at €2,100 for the Christine. They go up to €4,990 for the Loop Pear Diamond. The price depends on the diamond size, the design, and the metal chosen.

How do you care for a green diamond ring?

Care is just as straightforward as for a white diamond. Soak the ring in warm soapy water. Gently brush it. Rinse and dry with a microfibre cloth. Avoid cosmetics, chlorine, and impacts. An annual check-up with your jeweller ensures the setting’s longevity.

Fiona