Green Diamond Rings

A natural green diamond is one of the rarest and most scientifically fascinating gemstones in the world. Unlike yellow diamonds — whose colour comes from nitrogen — the green hue in a natural green diamond is caused by exposure to natural radiation (primarily alpha particles) over millions to hundreds of millions of years as the stone migrates towards the earth's surface. This process produces a colour that typically resides in the outermost layers of the diamond, making it uniquely vulnerable to loss during cutting and polishing — which is one of the key reasons truly fine natural green diamonds are so exceptionally scarce.

Browse our full green diamond ring collection or contact us to arrange a private consultation.

Natural green diamonds are among the rarest of all fancy colour diamonds for several compounding reasons:

Surface-only colouration — In most green diamonds, the radiation-induced colour exists only in a shallow layer near the surface of the rough stone. During the cutting and polishing process, this coloured layer can be partially or entirely removed, meaning many stones lose their green hue before they ever reach the market.

Deep-body colour is extraordinarily rare — Stones where the green colour penetrates throughout the entire crystal — known as deep-body colour — are vanishingly rare and command extraordinary premiums at auction.

Natural vs. treated distinction — Because green diamonds can also be produced artificially through laboratory irradiation, the GIA subjects every green diamond to rigorous testing to confirm whether the colour is of natural origin. Stones confirmed as naturally coloured are exceptionally rare and carry a significant value premium.

Limited global production — High-quality natural green diamonds are found in only a handful of mines worldwide, with notable sources in Brazil, the Democratic Republic of Congo, and India.

Green diamonds are graded by the GIA using the same fancy colour intensity scale applied to all fancy colour diamonds:

Faint Green → Very Light Green → Light Green → Fancy Light Green → Fancy Green → Fancy Intense Green → Fancy Vivid Green / Fancy Deep Green

The deeper and more saturated the colour, the rarer and more valuable the stone. In addition to intensity, the GIA grades the colour modifier (hue), which has a significant impact on value:

Pure Green — The most desirable and rarest hue, commanding the highest premiums.
Bluish Green — Highly sought after, evoking the colour of fine emeralds.
Yellowish Green — More commonly available, often at more accessible price points.
Greyish Green / Brownish Green — Lower value modifiers, though still beautiful and natural.

A Fancy Vivid Pure Green diamond represents the absolute pinnacle of the category — fewer than a handful reach the global market each year.

This is arguably the single most important question to ask when considering a green diamond purchase.

Natural green diamonds receive their colour from millions of years of exposure to naturally occurring radiation within the earth. The GIA confirms this origin through extensive spectroscopic testing and clearly states "Natural Color" on the grading report. These stones are extraordinarily rare, and their value reflects that rarity.

Treated green diamonds are colourless or near-colourless diamonds that have been subjected to artificial irradiation or HPHT (High Pressure High Temperature) processing in a laboratory to induce a green colour. While visually similar or even identical to natural stones, treated diamonds carry a fraction of the value of their natural counterparts. The GIA grading report for a treated stone will state "Artificially Irradiated" or similar language.

Every green diamond in our collection has been independently certified as Natural Color by the GIA or CGL. We never sell treated stones as natural, and the certificate accompanying every purchase confirms this without ambiguity.

Yes. Every green diamond ring in our collection features a centre stone accompanied by an official grading report from the GIA (Gemological Institute of America) or CGL (Central Gem Laboratory). The certificate documents the stone's colour grade, colour origin (Natural — critical for green diamonds), colour modifier, clarity, carat weight, cut, polish, symmetry, and fluorescence.

For green diamonds in particular, the "Natural Color" designation on the GIA report is essential — it is the definitive proof that the stone's colour was not induced by any artificial treatment and is a primary driver of the stone's long-term value. We recommend all customers review the certificate carefully before purchasing, and our specialists are always available to explain it in full.

Natural green diamonds — particularly those graded Fancy Intense or Fancy Vivid with a Pure Green or Bluish Green modifier — are widely regarded as among the most compelling investment-grade gemstones available. Key factors underpinning their investment case include:

Extreme scarcity — Fewer natural green diamonds of investment quality reach the global market each year than virtually any other fancy colour category. Supply is not merely limited — it is vanishingly small.

Auction track record — Significant natural green diamonds have achieved record-breaking prices at Christie's and Sotheby's, including the famous Aurora Green (5.03ct Fancy Vivid Green, sold for $16.8 million in 2016) and the Dragon Vivid Green (5.04ct, sold for $8.7 million in 2023).

Growing awareness — As collector knowledge of green diamonds deepens globally, demand is rising while supply remains fixed.

Tangible, portable asset — A significant concentration of value in a compact, internationally liquid, and privately held form.

As with all investments, we recommend consulting a qualified financial adviser. However, the rarity fundamentals of natural green diamonds are exceptionally strong.

The ideal metal pairing depends on the specific hue of the green diamond and the aesthetic you are looking to achieve:

18K White Gold — The most common and versatile choice for green diamonds. Its clean, neutral tone enhances the green colour beautifully, creating an elegant and refined look that works well across a wide range of designs. It is also an excellent option for those choosing a green diamond for the first time.

Platinum (PT950) — Similar to white gold, platinum creates a cool and sophisticated impression while allowing the green colour to stand out clearly. It is especially suited for those who value a luxurious feel, durability, and a timeless finish.

18K Yellow Gold — A c lassic and warm pairing. The rich tone of yellow gold harmonises naturally with green diamonds, evoking a lush, vintage, and botanical elegance. It is particularly beautiful with Yellowish Green stones.

18K Rose Gold — An unconventional but striking combination. The contrast between blush and green creates a distinctive, fashion-forward aesthetic that works beautifully with lighter Fancy Light Green stones.

For setting styles, a prong solitaire maximises light entry and colour brilliance, while a halo setting with white diamond accents enhances both the perceived size and saturation of the green. Popular cuts for green diamonds include cushion cut, oval cut, pear cut, and radiant cut — all of which are excellent at retaining colour during the cutting process. Our specialists can help you find the perfect combination — book a private consultation today.

Absolutely. A natural green diamond is an extraordinary foundation for a truly one-of-a-kind engagement ring or special jewellery piece. Once you have selected your stone — either from our loose green diamond collection or in collaboration with our sourcing team — we will guide you through every aspect of the design and fabrication process. From setting style and metal choice to final finishing, every detail is crafted to complement your stone and reflect your personal vision.

Whether you have a clear design in mind or are starting from a blank page, our specialists are here to help. Contact us or visit our private Tokyo showroom to begin the conversation.

Yes — and for green diamonds in particular, we strongly encourage it. The colour of a natural green diamond is highly sensitive to lighting conditions: it can appear dramatically different under natural daylight, fluorescent lighting, and incandescent light. Experiencing this interplay of colour and light in person is something no photograph or video can replicate, and it is often what makes buyers fall completely in love with a stone.

At our private Tokyo showroom, one of our specialists will present the stone under multiple light sources, walk you through the grading report in detail, and answer every question you have — with no pressure and complete transparency. Viewings are by appointment only. Please use our contact form to reserve your private session.

Yes. Weiss offers a money-back guarantee on our green diamond rings and jewellery. Acquiring a natural green diamond is a significant and deeply personal decision, and we are committed to ensuring every customer feels completely confident at every stage — from first enquiry to delivery and beyond. Full terms and conditions are available on our Money-Back Guarantee page. If you have any questions before purchasing, please do not hesitate to get in touch — we are always happy to help.