Colorless Radiant Cut Diamond Rings

ラディアントカットダイヤモンドリング

GIA & CGL certified natural radiant cut diamond rings. D–I color, 1ct+ focused, 18K white gold & platinum. 

Available from 1.06ct to 1.82ct across D through I color grades and VS1 through SI1 clarity, in 18K white gold and platinum (PT950).

Free ring sizing. Custom orders welcome.

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How to Choose a Pear Cut Diamond Ring

What Is a Pear Cut Diamond?

A pear cut diamond — sometimes called pear shape or teardrop — features a rounded end on one side and a pointed end on the other, combining the brilliance of round cut with the elegant elongation of a marquise shape. The cut is believed to date back to 15th century Flanders, making it one of the oldest fancy shapes still in production. Most pear cuts share the same 58-facet structure as round brilliant cut, allowing them to achieve comparable sparkle despite their distinctive asymmetric outline. Beyond rings, the shape's directional elegance has made it a longtime favorite for necklaces and earrings as well, where the point naturally draws the eye.

Why Symmetry Matters Most

Symmetry is the single most important factor when evaluating a pear cut diamond. Both halves of the stone — from the rounded end to the pointed tip — should mirror each other precisely along the central axis. Even slight asymmetry is noticeable to the eye and significantly affects the stone's overall appeal, which is why checking the symmetry grade on the certificate is essential. Length-to-width ratio is the other key proportion to consider: a ratio around 1.50 to 1.75 is generally considered the most balanced and popular, with lower ratios appearing more rounded and higher ratios appearing more elongated and dramatic.

Which Way to Wear It

One of pear cut's distinct features is that it can be worn in either orientation. Pointing the tip toward the fingertip creates a visually slimming, elongating effect on the finger. Pointing the rounded end toward the fingertip instead produces a softer, more classic look. There is no correct orientation — it comes down entirely to personal preference, and many buyers try both before deciding. On clarity, pear cut diamonds tend to reveal inclusions slightly more readily than round brilliant cut, so VS1 or higher is generally recommended, though our collection ranges from IF (Internally Flawless) through SI2 to suit different budgets.

Metal and Carat Weight

We offer pear cut diamond rings in 18K white gold, 18K rose gold, and platinum (PT900). Platinum and white gold give the stone a clean, brilliant frame, while rose gold adds a softer, warmer character. Our collection ranges from ¥350,000 (0.682ct SI1) to ¥1,150,000 (1.547ct SI1), with 0.6ct to 1ct being a popular range for engagement rings. If the directional elegance and distinctive silhouette of pear cut appeal to you and you'd like guidance on proportion or budget, contact us or visit our office in Okachimachi.

Frequently Asked Questions

The radiant cut was developed in 1977 by Henry Grossbard. It combines the rectangular or square outline of an emerald cut with approximately 70 brilliant-cut facets, producing significantly more sparkle than a step-cut shape like emerald cut while maintaining the same geometric character. It is designed for buyers who want the look of emerald cut but with dramatically more brilliance and fire.
Both shapes share a rectangular or square outline with cropped corners, but their facet structures are completely different. Emerald cut uses step-cut facets that create a hall-of-mirrors effect — a cool, deep, understated sparkle. Radiant cut uses brilliant-cut facets that produce strong, dynamic sparkle much closer to round cut. Browse our emerald cut diamond ring collection to compare directly.
Yes. Because radiant cut's brilliant-cut facets disperse color across the stone rather than concentrating it, G through I Near Colorless grades often appear just as white as D-F Colorless grades in real-world lighting conditions. This makes radiant cut a popular choice for buyers who want to allocate more of their budget toward carat weight or clarity without sacrificing visual quality.
Yes. All radiant cut diamond rings at Weiss come with a GIA or CGL certificate, detailing color grade, clarity, and carat weight so you can evaluate quality objectively before purchasing.
A square radiant (length-to-width ratio 1.00 to 1.05) looks bold and balanced from every angle. An elongated radiant (ratio 1.10 or higher) adds a finger-lengthening effect and a slightly more modern character. Elongated radiant has grown in popularity recently for engagement rings. The best way to decide is to try both in person, as the proportion difference is more apparent on the hand than in photographs.
Yes. Our appointment-only office is in Okachimachi, Tokyo. You are welcome to compare square and elongated proportions in person with guidance from our specialists. Please book an appointment through our contact page or by phone.
Yes. We can create a custom radiant cut diamond ring based on your preferred carat weight, color grade, clarity, proportion, and metal. You can also browse our loose diamond collection to select a specific stone. Contact us to begin.