Your Diamond. Your Design.
Custom Lab-Grown Diamond Engagement Rings
Bring your vision to life with a custom lab-grown diamond engagement ring, thoughtfully designed around you. From your perfect diamond to every intricate detail, experience personalized craftsmanship without the traditional luxury markup.
From Concept to Creation
Explore how our customers' ideas take shape through personalized CAD design and expert craftsmanship, from the first inspiration to the finished piece.
Vintage Floral Filigree Oval Bezel Diamond Engagement Ring
Botanical Vine Oval Diamond Engagement Ring
Drawing inspiration from nature, this bespoke engagement ring features a brilliant 2-carat oval lab-grown diamond set in white gold. Delicate marquise-cut diamond accents intertwine with graceful, vine-inspired metalwork, complemented by a hidden diamond halo and sparkling pavé details along the band. Working from two designs our customer admired, we developed a personalized CAD design that brought his favorite elements together into one distinctive creation. The result is a romantic, botanical-inspired ring that beautifully balances organic elegance with intricate craftsmanship.
Diamond Halo Emerald Ring
A celebration of a new chapter, this bespoke ring was designed for a returning Gema&Co customer who wanted to commemorate her new career milestone. Inspired by Princess Diana's iconic engagement ring, the design features a vibrant 3-carat oval green emerald surrounded by a brilliant halo of round accent stones, set in 14k yellow gold. Through personalized CAD revisions, we added cathedral supports for greater structural stability while maintaining the elegant, low-profile silhouette she envisioned. We also worked closely with our customer to select her preferred emerald-green hue, creating a timeless statement piece that blends royal inspiration with meaningful personalization.
Our Design Process
From your first inspiration to the finished ring, we guide you through each step.
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Share Your Inspiration
Send us your ideas, photographs, or sketches, along with your preferred diamond shape and size, and ring size if known. We'll discuss your vision and prepare a personalized, all-inclusive quote.
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Confirm Your Order
Once you're happy with your quote, we'll email an invoice. Full payment is collected before CAD design begins and includes the $100 nonrefundable design fee, not an additional charge.
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Review Your Digital Design
Initial CAD renders typically take 5–8 business days after payment. Review every detail with two complimentary revision rounds. Additional rounds may incur a $50 fee each, disclosed in advance.
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Approve and Create
Production begins only after you approve your final CAD design and generally takes approximately 3.5 weeks. This is separate from CAD design, revisions, and shipping. Your completed ring is inspected before shipping.
Make It Yours
Shape the details of your custom lab-grown diamond engagement ring around your style and ideas.
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Shape & Size
Explore the lab-grown diamond shape, carat weight, and proportions that suit your vision.
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Your Setting
Personalize an existing design or develop something original with our team.
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Precious Metal
Choose 14K or 18K gold in white, yellow, or rose, or platinum.
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Band Design
Refine the band width, profile, finish, and fit of a matching wedding band.
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Accent Stones
Explore side stones and accent details that complement your center diamond.
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Personalization
Add meaningful engravings, distinctive motifs, or thoughtful details that make your ring uniquely yours.
You’re not limited to predefined designs. Bring a photograph, sketch, an existing ring you’d like to personalize, or an entirely original idea.
Start Your Custom Design
Tell us what you have in mind for your custom lab-grown diamond engagement ring. We’ll discuss your ideas, refine the details, and prepare an all-inclusive quote.
Your Questions, Answered
A few things to know before creating your custom lab-grown diamond engagement ring.
How do I start designing my custom lab-grown diamond ring?
Share your inspiration through our inquiry form or by email at support@gemaandco.com, along with your preferred diamond shape and size, and ring size if known. We discuss the details and prepare an all-inclusive quote. You can personalize an existing Gema&Co design or bring an original idea, including a matching wedding band.
Are your lab-grown diamonds individually graded?
Our lab-grown diamonds weighing 1.00 carat and above are individually graded by IGI. Lab-grown diamonds weighing 0.99 carat and below are not individually graded.
How does payment work, and is the $100 design fee extra?
Full payment is collected before CAD work begins. The $100 nonrefundable design fee is included in your agreed order payment, not charged on top of it.
Can I request changes to the digital design?
Yes. You review the CAD renders before approving the final design. Two revision rounds are complimentary. Additional rounds may incur a $50 fee, which is disclosed in advance.
What if I decide not to proceed?
If you decide not to proceed after reviewing your CAD renders, you may cancel before production begins and receive a refund of your payment, less the $100 nonrefundable design fee. Once production has begun, the order is no longer eligible for this cancellation refund.
How long does the custom-design process take?
Initial CAD renders typically take 5–8 business days after payment. Once you approve your final design, production generally takes approximately 3.5 weeks.
Design revisions may extend the overall timeline, and shipping time is additional. If you have a specific date in mind, let us know so we can discuss what's possible.
What can I customize?
Nearly every detail can be personalized, from your diamond's shape and size to the setting, precious metal, band design, accent stones, and engraving. Whether you're refining an existing Gema&Co design or envisioning something entirely new, our team can work from inspiration photographs, sketches, or your own ideas to create a ring that's uniquely yours.