Cart
0
✦ BLOG HERO IMAGE — 4:3 RatioA clean editorial hero shot of two loose lab-grown diamonds presented side by side on a soft cream-and-white marble surface: a round brilliant cut on the left and an elongated oval cut on the right, both approximately 1.5 carats, both blazing with rainbow fire. The oval is positioned vertically to emphasise its elongated elegance against the round's classic symmetry. Refined thin gold serif labels float above each: "ROUND" and "OVAL". Soft directional studio light from the upper-left brings out maximum scintillation in both stones. Camera 100mm macro f/4, both diamonds in tack-sharp focus, background blurring softly. Color palette: cream and white marble, icy colorless diamonds, rainbow fire, gold label text. Photorealistic 8K. Editorial fine jewelry photography. The hero should let a viewer instantly compare the two most popular diamond shapes. No clutter, no rings, loose stones only.
Oval and round are the two most searched diamond shapes for engagement rings in 2026. Both are brilliant-cut diamonds -- designed to maximise light return, fire, and sparkle. But they wear differently, look different on the hand, and suit different ring styles. Here is an honest breakdown to help you decide.
✦ IMAGE PROMPT — 16:9
Two loose lab-grown diamonds photographed side by side on a flawless polished white Carrara marble surface. Left: a round brilliant cut diamond, approximately 1.5 carats, perfectly symmetrical with 58 facets visible. Right: an oval brilliant cut diamond, same approximate carat weight, elongated silhouette clearly visible. Both are D-color VVS clarity, colorless. Captured with a 100mm macro lens at f/4, focused on the crowns of both stones simultaneously. Overhead diffused softbox creates even cool-white light with zero harsh shadows and maximum rainbow fire scintillation inside both diamonds. Color palette: pure white, cool grey marble veining, ice-clear diamond. No labels, no people, no ring settings -- loose stones only. Shot on Phase One IQ4 150MP. Hyperrealistic 8K. Editorial fine jewelry photography. Clean, clinical, premium. Background out of frame gradually blurs to pure white.
The Round Lab Grown Diamond
The round brilliant cut has 58 facets arranged to maximise light reflection. It is the most researched, most optimised diamond shape in history. Because so much of a round diamond's rough is removed during cutting, round diamonds command slightly higher prices per carat than other shapes -- even in lab-grown form.
Round diamonds are versatile. They suit solitaire settings, halo settings, pavé bands, and vintage-inspired designs equally well. If you want a diamond that looks brilliant from every angle and works with almost any ring style, round is the safe and timeless choice.
The Oval Lab Grown Diamond
The oval cut has been the most searched engagement ring shape since 2022. It has the same brilliant faceting as a round diamond -- the same fire, the same light return, the same sparkle. What it adds is length.
An oval diamond elongates the finger. A 1.5-carat oval appears visually larger than a 1.5-carat round because its elongated footprint covers more surface area. This is called the "face-up" size -- and oval diamonds consistently look larger face-up than rounds of the same carat weight. For buyers who want visual impact per carat, oval delivers more.
How Much Is a Lab Grown Oval Diamond?
In lab-grown form, oval diamonds typically cost slightly less per carat than round diamonds of the same quality because less rough material is wasted in cutting. A VVS, D-E-F lab-grown oval in 1 to 2 carats is significantly more accessible than a mined equivalent. At Ronora, oval lab-grown diamonds are available across engagement ring, halo, and three-stone settings at multiple carat sizes.
Oval vs Round: Key Differences
Brilliance: Equal. Both are brilliant-cut with similar light return when well-cut.
Finger elongation: Oval wins. The elongated shape makes fingers appear longer and slimmer.
Face-up size: Oval wins. Looks larger per carat than round.
Versatility: Round wins slightly. Easier to find matching wedding bands and side stones.
The bow-tie effect: Oval diamonds can show a dark shadow across the center if not well-cut. All Ronora ovals are selected for minimal bow-tie visibility.
✦ IMAGE PROMPT — 4:5
A beautifully lit portrait-orientation lifestyle photograph of a woman's hand held up gracefully against a soft warm cream interior background, wearing an oval lab-grown diamond engagement ring in 14K yellow gold on the ring finger. The hand is relaxed with fingers slightly spread to showcase the ring. The oval diamond is approximately 1.5 carats, pointing vertically along the finger, clearly showing the elongating effect on the finger. Finger skin is natural and unretouched, no nail polish or subtle nude pink polish. Warm golden-hour light streaming from a large window to the left, creating a soft directional highlight on the diamond that reveals fire and brilliance inside the stone. Shot on 85mm portrait lens at f/1.8, shallow depth of field with the ring and hand in tack sharp focus and the background cream wall softly blurred. Color palette: warm gold (#c9a96e tones), cream, natural skin tones. No jewelry other than the ring. No face visible. Premium editorial lifestyle jewelry photography. Vogue jewelry editorial aesthetic. Photorealistic 8K.
Which Shape Should You Choose?
If you want timeless and universally flattering: round. If you want modern, finger-elongating, and visually impactful: oval. Both shapes are available in Ronora's CVD lab-grown diamond collection in VVS clarity and D-E-F colorless grading.
Browse oval and round engagement rings or explore halo settings in both shapes.
Frequently Asked Questions
How much is a lab grown oval diamond?
Lab-grown oval diamonds cost 60 to 80 percent less than mined oval diamonds of the same cut, color, clarity, and carat. In VVS clarity and D-E-F colorless, a 1-carat lab-grown oval is significantly more affordable than the mined equivalent.
Do oval diamonds look bigger than round?
Yes. Oval diamonds have a larger face-up surface area than rounds of the same carat weight, making them appear larger on the finger. This is one of the main reasons oval has become the most popular engagement ring shape.
Why do jewelers sometimes not recommend lab grown diamonds?
Traditional jewelers who sell mined diamonds earn higher margins on natural stones. Lab-grown diamonds offer better value to buyers, which has disrupted the traditional jewelry market. The diamonds themselves are identical in quality.
What is the bow-tie effect in oval diamonds?
The bow-tie effect is a dark shadow visible across the center of some oval diamonds. It is caused by how certain facets reflect light. A well-cut oval diamond minimises this effect. Always view oval diamonds in natural light before purchasing.
