Porto Solitaire, Marquise Cut
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All Signature Customizable rings are made to order in 6-9 weeks and non-returnable*
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Lifetime Warranty
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Complimentary Gift Packaging
The Porto ring is a thoughtfully designed and timeless setting. The unique shape of the stone strikes the perfect balance between unique yet classic.
The cathedral adds elegance while providing the support that the length of the marquise requires to be stable. The "V" prongs add protection to the most vulnerable parts of the stone and the beautiful claw prongs accentuate its beauty.
We custom cut and hand select the top quality lab diamond center stones for every ring which are guaranteed premium D or E color and completely eye-clean VVS/VS1 clarity.
Our specialty diamond cuts minimize or eliminate the bow-tie effect for optimal performance. Read more about our Bespoke Diamonds here.
We custom cut or custom source stones with ideal cut proportions for optimum light return and minimal to no bow tie in our elongated cuts.
Stones are guaranteed excellent symmetry and polish.
We are picky with who we work with and only source and produce from a small number of high-quality, eco-conscious growers and screen for blue, gray, and brown color tinges, strain and striation to ensure you receive only the most premium lab diamonds available on the market.
Pavè stones in rings with a moissanite center stone are moissanite by default unless stated otherwise.
Pavè stones in rings with lab diamond center stones are automatically upgraded to lab diamonds.
Pavè stone quality is DEF VS+.
Cut: Marquise
Shank Width: 2mm
Features a cathedral, gallery rail, 6 prongs (2 V-prongs at the north and south position),
Moissanite:Colorless DEF, VVS1-VVS2
Lab Diamond: Colorless or Near Colorless, eye clean VVS or VS Clarity, Excellent Symmetry and Excellent Polish
All lab diamonds come with GIA, IGI, or GCAL Certification.
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.
Learn more about our warranty here.
We offer one free yearly cleaning, prong tightening, and polish for any Bijou Lab engagement ring or wedding ring purchased through us. Eligible to the original purchaser only. Shipping to and from is the responsibility of the customer and we are not responsible for any packages lost, damaged or stolen so we strongly encourage you to ship with an insured, tracked and signature required mailing service. Please reach out to us before shipping your ring back and we will provide you with instructions.
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Our Commitment to the Earth
Consciously-Sourced, Handcrafted Heirlooms
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.