Vintage Monaco 3 Stone, Marquise Cut
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Handcrafted to order — our team will guide you throughout the process.
One complimentary resize included within six months.
Our team will review your order carefully and keep you updated throughout the creation process.
Your details are protected and safe with us.
Lifetime Warranty
Free Express Insured Shipping
Complimentary Gift Packaging
This ring features a sweeping take of our brand's signature Vintage Pave Bridge; an ode to both the old and the new, a dual-sided sparkling arch of hidden diamonds with an enchanting milgrain border to add a touch of vintage beauty underneath.
The marquise rests within our beloved Latticework Petal Prongs; a romantic bloom of petals that weaves around the center stone. Petal prongs encapsulate the two pear diamonds that frame the center.
Our design's proprietary overlapping tulip petals are not only beautiful; they give the prongs added security due to the interlocking nature of every prong.
All diamonds are hand-selected by our founder to meet strict beauty and quality standards, the details below are for those who’d like a deeper look.
We custom cut the top quality lab diamond center stones for every ring which are guaranteed premium D or E color and completely eye-clean VVS1-VS1 clarity, excellent polish and excellent symmetry.
Our specialty diamond cuts minimize or eliminate the bow-tie effect for optimal performance. Read more about our Bespoke Diamonds here.
Diamond Parameters:
Color: D or E (completely colorless)
Clarity: VVS1-VS1 (eye-clean)
All of 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. Our diamond expert and founder Michelle Keller hand selects the diamond for each ring depending on the setting style, number and position of the prongs, as well as presence or absence of accent stones.
*For specific requests, please send us an email PRIOR to ordering to discuss.
2mm band
6 claw prongs
Dual-sided sweeping pave diamond milgrain bridge
Flush-fit with most wedding bands
Cut: Marquise
Moissanite:Colorless DEF, VVS1-VVS2
Lab Diamond: Premium D or E color, eye clean VVS or VS
Clarity
All lab diamonds come with IGI Certification.
Pavè stones in rings with a moissanite center stone are moissanite by default.
Pavè stones in rings with lab diamond center stones are lab diamond by default.
Non-round side stones in all rings are lab diamond.
Pavè stone quality is DEF VS+.
We craft our rings by hand. The ring you see online is a close representation of what your custom piece will look like, but your ring is made by artisans and not by computer or machine. Our experienced jewelers hand finish every single piece, so any subtle differences are what make your ring unique.
Because each piece is custom crafted specifically for you in the stone size/type, metal type, and ring size you choose, it is not eligible for return.
We want you to feel completely confident in your decision. If you have any questions prior to purchasing, please contact us at hello@thebijoulab.com. We’re always happy to provide additional images, videos, or detailed product information to support your selection.
Every piece of Bijou Lab jewelry is created to make a lasting impression. For this reason, all Bijou Lab jewelry pieces are covered by our Limited Lifetime Warranty.
We guarantee that every Bijou Lab piece is crafted to the highest standards of fine jewelry workmanship. Should your piece arrive with a manufacturing defect, we will repair or remake it at no cost to you.
Learn more about our warranty here.
Using our Ring Size Chart
Our Ring Size Chart includes US sizing, UK/Australian sizing, and inside diameter and circumference measurements for reference. This is helpful if you already know your size, are converting from an international size, or are measuring a ring you currently own.
For the most accurate fit
If you’re unsure of your size or between sizes, we recommend using a professional ring sizer—HERE is the gold standard sizing tool used by our master jewelers and setters.
Fit tips
- Fingers naturally fluctuate throughout the day and across seasons
- A well-fitting ring should feel snug and take a few wiggles to get off
- If you’re between sizes or have a larger knuckle, choosing the slightly larger size often feels best long-term to allow for swelling/fluctuation
Each ring includes one complimentary resize within six months of purchase, should a size adjustment be needed.
All orders are fully insured during transit. In the rare event a package is lost or damaged in shipping, we will work with the carrier and remake the piece as needed.
Adding product to your bag
Our Commitment to the Earth
Consciously-Sourced, Handcrafted Heirlooms
Expert Diamond Curation
All of our ring purchases include an expert curation service where our founder and diamond expert, Michelle, hand selects the ideal diamond to ensure that it meets the highest standards for excellence. The diamond is selected for the exact setting that it is going into, with regards to a multitude of factors including but not limited to: the diamond cuts proportions, the number of prongs, prong placement, setting style, ring size, band width, and the presence or absence of side stones. Our stones are always custom cut in very strict balanced ratios; if you have specific diamond requirements you'd like to have met, please reach out to us via email!
Handcrafted with care
At Bijou Lab, we don’t just make rings; we craft pieces with intention. We believe that the jewelry we wear should tell a story — of quality, of thoughtfulness, of connection and purpose.
Rings with a conscience
“Radically Impactful”—We’re on a mission to change the lives of those afflicted by diamond mining. All of our ethical and sustainable jewelry pieces have a 1:1 impact on a child’s life by providing them with the gift of empowerment in education.
Complimentary Gift Packaging
All orders come packaged in premium gift packaging and a proposal-ready box!
Hidden Birthstones
A hidden birthstone is a discreet gem carefully set inside the band; a secret tribute meant just for the wearer. It’s a personal detail that symbolizes something meaningful, like a loved one’s birth month or a special memory, visible only to you.
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Bijou Lab is THE ONLY place to get your beautiful girl her engagement ring or band. Every single piece is a work of art and I cannot recommend them enough. My fiancé said that their customer service was incredible and I legitimately stare at my ring everyday in awe of the beautiful and thoughtful details of my Vintage Monaco 3 Stone engagement ring.
YOUR GIRL DESERVES ONLY THE BEST!! BIJOU LAB IS THE ONLY ANSWER
Bijou Lab is THE ONLY place to get your beautiful girl her engagement ring or band. Every single piece is a work of art and I cannot recommend them enough. My fiancé said that their customer service was incredible and I legitimately stare at my ring everyday in awe of the beautiful and thoughtful details of my Vintage Monaco 3 Stone engagement ring.
YOUR GIRL DESERVES ONLY THE BEST!! BIJOU LAB IS THE ONLY ANSWER
From the customer service to the final product, the team did a great job at turning a dream into reality. The ring turned out to be even better than in the pictures and completely flawless. She couldn't be more satisfied. Also, the regular checkups in the creation process were much appreciated. This is thoroughly better than you'd find from a big box retailer. I did upsize the diamond and the band though, so I'd recommend doing that as well to make it more perfect.
my fiancé worked super close w bijou lab to design my absolute dream ring. he semi-customized it by adding his birthstone to the bridge on both sides. it is such a beautiful tribute to him & the perfect amount, something i am able to see and show if i want or i can keep that privately to myself! i never stop staring at my ring and i can’t wait for people to ask me about it! i know shopping online for a ring can be scary - but the team at Bijou is unmatched, kind, caring, knowledgeable- everything you’d ever want from a ring designer! cannot recommend them enough! back to staring at my ring now! xo