The Oval Cut Lab-Grown Diamond: The Modern Classic

The Shape of the Moment

The oval cut has exploded in popularity over the past decade, becoming the most sought-after fancy shape diamond. Its appeal is straightforward: it combines the brilliant-cut fire of a round diamond with an elongated silhouette that makes fingers look longer, makes diamonds appear larger, and offers a distinctly modern alternative to the traditional round brilliant. For those who want something different but not too different, the oval is the perfect choice.

Why Oval Is Trending

Finger-flattering: The elongated shape creates a slimming, lengthening effect on the finger — one of the most universally flattering shapes across all hand sizes
Larger appearance: Oval diamonds have about 10% more face-up surface area than rounds of the same carat weight, making them appear bigger
Brilliant sparkle: Ovals use a brilliant-cut facet pattern (56-58 facets), delivering the same fire and brilliance as round brilliants
Modern yet timeless: Distinct enough to feel contemporary, familiar enough to never look dated
Versatility: Works beautifully in solitaire, halo, three-stone, and east-west settings

Understanding the Bow-Tie Effect

Most oval diamonds display a bow-tie — a dark area across the center that resembles a bow tie when viewed face-up. This is caused by a shadow created by the way light reflects through the elongated facets. The bow-tie is not inherently bad — in fact, some degree of contrast adds depth and character. However, an overly prominent bow-tie can make the center of the diamond appear dark and lifeless.

When evaluating oval diamonds:

Minimal bow-tie: Faint, barely noticeable — ideal. The diamond appears evenly brilliant
Moderate bow-tie: Visible but balanced by surrounding brilliance — acceptable and may add character
Severe bow-tie: Dominates the stone's appearance, creating an obvious dark stripe — avoid

The bow-tie isn't visible in grading reports, so you must see the actual diamond (in images or video) before purchasing. This is particularly important when buying online.

Choosing the Right Oval

Length-to-Width Ratio

The ratio determines how elongated your oval appears:

1.30-1.40: The classic oval proportion. Balanced elongation that's universally flattering. The most popular range
1.40-1.50: More elongated, creating a more dramatic, fashion-forward look. Maximizes the finger-elongating effect
1.50+: Very elongated, nearly marquise-like. Distinctive and bold, but narrower width means the stone may look thin from some angles
1.20-1.30: Slightly plumper, more egg-like. Less dramatic elongation but may appeal to those who find standard ovals too narrow

4Cs for Ovals

Cut: GIA doesn't grade cut for ovals, making this the one area where you need to rely on images and expert judgment. Look for excellent symmetry, proportionate depth (58-62%), and minimal bow-tie
Color: Ovals tend to show color more than rounds, particularly at the pointed ends. Choose G or higher for white metals. H-I works well in yellow or rose gold
Clarity: VS2 is typically eye-clean. The brilliant faceting masks inclusions effectively. Avoid inclusions at the narrow ends, where they're most visible
Carat: The elongated shape gives impressive visual size per carat. A 1-carat oval looks as large as a 1.10-1.15 carat round

Settings for Oval Diamonds

Solitaire: The oval's distinctive shape shines in a minimal setting. Six prongs (two at the tips, four at the sides) provide security while showcasing the shape. Slim, delicate bands enhance the oval's elongating effect
Halo: A halo of small round diamonds around the oval amplifies both size and sparkle. The halo follows the oval outline, creating a larger, more impactful presentation
Three-stone: Oval center with pear-shaped sides pointing outward, or with round side stones for contrast. Three-stone ovals are elegant and meaningful
East-west: Rotating the oval horizontally creates a thoroughly modern look that sits differently on the finger and makes a distinctive style statement
Bezel: A metal rim around the oval protects the pointed ends (the most vulnerable areas) while creating a sleek, contemporary silhouette

Protecting the Tips

Recommended Pieces

Oval diamonds have pointed ends that are more vulnerable to chipping than a round's uniform edge. Protection strategies:

V-prongs or bezel tips at the ends shield the vulnerable points
Avoid wearing during activities that could impact the tips
Regular prong checks are especially important for oval settings