Designed to Minimize the Bow Tie Effect
Most oval, marquise, and pear diamonds lose light through the center, creating what's known as the bow tie effect. Our bespoke cutting patterns are designed specifically to maximize brightness while minimizing that darkness.
cut comparison
Save the bowtie for your wedding
The difference isn't just something you see under jewelry store lighting. It's something you'll notice every time you glance down at your hand. A brighter center, more even light return, and a diamond that comes alive from every angle.
The Astral Cut
All of our oval, marquise, and pear diamonds rings come with our signature Astral faceting pattern. The Astral Cut uses a custom pavilion faceting arrangement that redirect light more efficiently through the stone. This significantly reduces the appearance of a bow tie while maintaining excellent brilliance, fire, and scintillation. The facets also create broader flashes of light and stronger contrast, giving the diamond a crisp, lively appearance. There is no upgrade fee or need to special request this cut; it is included in the price of our rings.
The Constellation Cut
This cutting pattern eliminates the bow tie effect through the addition of facets on the pavilion. This cut has very even sparkle throughout the entirety of the stone.
It is considered a "crushed ice" style cut and is cut intentionally with slightly deeper proportions in order to eliminate the bow tie completely. Because of this it can have a marginally smaller footprint for its carat weight. This cut is available by request.
Expert Diamond Curation
Every Bijou Lab engagement ring includes our complimentary diamond curation service. Rather than asking you to sort through hundreds of grading reports and make a decision based on specifications alone, our founder and diamond expert, Michelle, personally selects the ideal diamond for your ring.
Each diamond is chosen not only for its beauty, but also for how it will perform in your specific setting. We evaluate far more than the traditional 4Cs, considering factors such as light performance, faceting, proportions, overall visual balance, and how the diamond's exact dimensions interact with the setting design, prong placement, ring size, band width, and any accent stones.
Our goal isn't simply to find a diamond that meets a checklist of specifications—it's to select the diamond that will create the most beautiful finished ring.
All of our elongated diamonds are custom cut to our strict Astral Cut™ standards, ensuring exceptional light performance and beautifully balanced proportions. If you have a specific preference, such as a longer or slightly wider appearance, we're always happy to accommodate those requests whenever possible.
Diamond Parameters
Every Bijou Lab Diamond Is Expertly Hand Selected
We custom cut and hand select ALL of our diamonds to ensure our clients are receiving the most premium stone possible. When you order a ring, you will receive a highly curated diamond, selected to minimize or eliminate bow tie and to fit perfectly with your setting choice.
Diamond Parameters:
Color: D or E (completely colorless)
Clarity: VVS1-VS1 (eye-clean)
Our diamonds are guaranteed completely colorless D or E color, and completely eye-clean VVS or VS1 clarity (meaning you cannot see any inclusions with the naked eye) with an emphasis on cut quality as the highest priority as it is the biggest determinant of beauty at this high of a color/clarity level.
Ratio Parameters:
Oval: 1.40-1.50
Marquise: 1.85-2.0
Pear: 1.50-1.60
We keep very strict parameters for what we will accept in regards to diamond ratio. As we are curating the diamond for you, we are very committed to ensuring that the ratios are perfectly balanced and will suit the number of prongs and side stones in your setting.
*If there is a particular cut, color, clarity, ratio or faceting pattern you’d like to request, please send us an email PRIOR to ordering to discuss your request. If we have it in stock, we'd be more than happy to accommodate your requests. Since the stones are cut 2-3 months in advance, our in-house diamond inventory changes on a day to day bases.
Frequently Asked Questions
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When you choose Bijou Lab, you're not just buying jewelry; you're making a difference in others' lives and the Earth's preservation. Together, we can continue to make a positive impact, one ring at a time.
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