The Oval Brilliant Diamond Cut

The oval brilliant diamond cut is a popular choice for engagement rings and other fine jewelry, prized for its elegant shape and excellent brilliance. It is essentially a modified round brilliant cut, elongated and with rounded corners.

Key Features

The defining characteristic of the oval brilliant is its elliptical shape. Typically, the length-to-width ratio falls between 1.30 and 1.50, though personal preference can lead to variations. This elongated form offers several advantages:

• Enhanced Sparkle: Like the round brilliant, the oval cut is designed with 57 or 58 facets (including the culet) to maximize light return, producing exceptional brilliance and fire.
• Appears Larger: Due to its elongated shape, an oval diamond often appears larger than a round diamond of the same carat weight.
• Versatility: Its flattering shape complements many hand types and finger sizes. It also works well in various jewelry settings.
• Unique Elegance: While sharing the brilliance of a round cut, the oval offers a distinct and sophisticated aesthetic.

Origin and History

The oval brilliant cut is attributed to the Russian gem cutter Lazare Kaplan, who refined its modern proportions in the 1960s. He aimed to create a shape that retained the brilliance of the round brilliant while offering a more elongated and striking appearance. Kaplan's innovations significantly improved the cut's light performance, making it a favored option.

Types / Variations

While the standard oval brilliant is the most common, there are subtle variations:

• Ratio: As mentioned, the length-to-width ratio can vary. A ratio closer to 1.30 appears more rounded, while a ratio closer to 1.70 or higher can appear quite elongated. The most popular range is generally between 1.40 and 1.50.
• Facet Count: While 57 or 58 facets are standard, some manufacturers might experiment with facet arrangements, though this is less common for ovals than for other fancy shapes.

How It's Made

Creating an oval brilliant diamond involves precise cutting and polishing. The process begins with a rough diamond, which is carefully mapped to determine the best yield and the optimal placement of facets. The cutter then uses specialized tools to shape the diamond into its oval outline and meticulously facet it to maximize light performance. The symmetry of the cut is crucial for even sparkle.

Grading & Quality Standards

Oval brilliant diamonds are graded using the same 4Cs as round brilliant diamonds: Cut, Color, Clarity, and Carat Weight. However, specific considerations apply:

• Cut: While there isn't a formal 'cut' grade for fancy shapes like oval brilliants from major labs (like GIA), excellent polish, symmetry, and well-proportioned facets are vital for maximizing brilliance. Look for diamonds with good symmetry and no overly deep or shallow sections. A common issue to watch for is a 'bow-tie' effect, a bowtie-shaped shadow in the center of the diamond, which can range from faint to very dark and distracting. Good cutting minimizes this.
• Color: Ovals tend to show color more readily than round brilliants due to their large, exposed surface area. Therefore, selecting a slightly higher color grade (e.g., G or H) is often recommended to ensure a diamond appears colorless.
• Clarity: Similar to color, the elongated shape can make inclusions more noticeable. Aiming for a clarity grade of VS1 or VS2 is generally a good balance between appearance and cost.
• Carat Weight: As mentioned, ovals appear larger than round diamonds of equal weight. A 1-carat oval will look noticeably bigger than a 1-carat round.

Buying Guide

When purchasing an oval brilliant diamond, consider the following:

• Length-to-Width Ratio: Decide on your preferred ratio. Do you want a more classic, rounded oval or a longer, more dramatic shape? Examine diamonds with different ratios to see what appeals to you.
• Bow-Tie Effect: Inspect the diamond face-up for any bow-tie shadow. A slight, faint bow-tie is acceptable and even expected in many oval cuts, but a dark or prominent bow-tie can detract significantly from the diamond's beauty.
• Symmetry: Ensure the diamond is symmetrically cut. The two halves of the oval should be mirror images of each other.
• Setting Style: Oval diamonds look stunning in various settings. They are particularly popular in solitaire settings, three-stone rings, and halo settings. The prongs can be placed to protect the pointed ends of the oval.
• Metal Choice: White gold, platinum, yellow gold, and rose gold all complement oval diamonds beautifully, each offering a different aesthetic.

Price Range & Value Factors

Oval brilliant diamonds are typically priced lower than comparable round brilliant diamonds of the same quality (4Cs). This is because the cutting process yields more usable diamond from the rough, and the demand, while high, is not as intense as for round brilliants. Factors influencing price include:

• The 4Cs: As with any diamond, higher color and clarity grades command higher prices.
• Cut Quality: Even without a formal lab grade, superior make (symmetry, polish, facet proportion) will be reflected in the price.
• Ratio: Extremely elongated or very rounded ovals might sometimes command slightly different pricing, though ratio is more about preference than inherent value.
• Brand/Retailer: Prices vary significantly between different jewelry stores and brands.

Care and Maintenance

Oval brilliant diamonds, like other diamonds, are very durable but require proper care:

• Cleaning: Clean regularly with a soft brush, warm water, and mild dish soap. For a deeper clean, an ultrasonic cleaner can be used, but check with your jeweler if the stone is set in a way that might be compromised (e.g., heat-treated or fracture-filled diamonds).
• Protection: Avoid wearing your diamond jewelry during strenuous activities, when using harsh chemicals (like cleaning products), or when exposed to extreme temperatures, as these can damage the metal setting or, less commonly, the diamond itself.
• Storage: Store your diamond jewelry separately in a soft pouch or a lined jewelry box to prevent scratching other items.

Pros and Cons

Pros:

• Exceptional Brilliance and Fire: Rivals the sparkle of a round brilliant.
• Appears Larger: Offers more visual carat weight for its size.
• Flattering Shape: Elongated form can make fingers look longer and slimmer.
• Unique Alternative: Stands out from the traditional round cut.
• Cost-Effective: Generally less expensive than round brilliants per carat.

Cons:

• Bow-Tie Effect: Can be present and potentially distracting if not well-cut.
• Color Sensitivity: Tends to show color more than round cuts.
• Clarity Sensitivity: Inclusions may be more visible than in other cuts.
• No Formal Cut Grade: Buyers must rely more on visual inspection and seller reputation for cut quality.

Famous Examples

Several famous diamonds feature the oval brilliant cut, showcasing its beauty and elegance:

• The Hope Diamond: While often described as cushion-cut, its current 45.52-carat form is widely considered a deep blue oval modified brilliant cut. It's one of the most famous blue diamonds in the world.
• The Star of Australia: This significant 203.03-carat diamond is a renowned example of an oval brilliant cut.

Common Misconceptions

Misconception 1: Oval diamonds are always less sparkly than round diamonds.Truth: When well-cut, an oval brilliant can exhibit virtually the same level of brilliance and fire as a round brilliant. The key is the quality of the cut and proportions.

Misconception 2: The bow-tie effect is always a sign of a bad cut.Truth: A faint bow-tie is a natural characteristic of oval cuts and often adds depth. It becomes a negative only when it is very dark and distracting, indicating poor faceting or proportions.

Misconception 3: Oval diamonds are a modern invention.Truth: While Lazare Kaplan refined the modern oval brilliant in the 1960s, variations of elongated, brilliant-cut diamonds have existed for centuries, evolving from older cuts.

Related Terms

• Fancy Shape: Any diamond shape other than a round brilliant.
• Modified Brilliant Cut: A brilliant-cut diamond that is not round.
• Length-to-Width Ratio: The mathematical ratio comparing the longest dimension to the shortest dimension of a gemstone’s outline.
• Brilliance: The brightness of a diamond, referring to the white light reflected back.
• Fire: The dispersion of white light into spectral colors.
• Scintillation: The play of light and dark areas that create sparkle as the diamond moves.
• Bow-Tie Effect: A shadow or bowtie-shaped pattern that can appear in the center of elongated fancy diamond cuts.

FAQs

What is the ideal length-to-width ratio for an oval diamond?

The ideal ratio is subjective and depends on personal preference, but a range of 1.30 to 1.50 is most common and widely considered aesthetically pleasing. Many prefer ratios between 1.40 and 1.50.

Do oval diamonds show a bow-tie?

Yes, most oval diamonds will exhibit some degree of a bow-tie effect. A well-cut oval will have a faint to moderate bow-tie that does not significantly detract from its sparkle. Very dark or prominent bow-ties are generally undesirable.

Are oval diamonds more expensive than round diamonds?

No, oval diamonds are generally less expensive per carat than round brilliant diamonds of comparable quality. This is due to higher yield from rough diamonds and slightly lower market demand compared to round brilliants.

Which setting is best for an oval diamond?

Oval diamonds are versatile and look good in many settings, including solitaire, three-stone, halo, and pave settings. The choice often depends on the desired aesthetic and the need to protect the diamond's pointed ends.

How do I choose the right color grade for an oval diamond?

Because ovals can sometimes appear to hold more color than round diamonds, it's often recommended to choose a color grade of G or H to ensure it looks colorless to the average eye. However, this also depends on the metal of the setting; warmer metals like yellow or rose gold can complement diamonds with slightly lower color grades (e.g., I or J).