Find your stone. Make it yours.
3 carat round lab-grown diamonds
Explore round stones from 3 to under 4 carats. Compare the exact details, then choose a setting around your stone.
Find your next direction
There are no 3-carat round stones in this collection right now.
Three things to know
Which certificate lab should I check?
Review the grading laboratory and available report on the exact stone listing. A design illustration does not establish certification.
How do I choose a 3-carat round diamond?
This collection covers 3 to under 4 carats. Compare the exact measurements, color, clarity, photos and supplied grading report. Carat measures weight; face-up dimensions and proportions help you judge the appearance. Choose the stone and setting together; the loose-stone price excludes the setting.
When will my stone or finished piece arrive?
Review the delivery estimate on the exact stone page and confirm your destination before ordering. Making time is confirmed for your piece. Delivery is typically 3–10 business days after production. Carrier, destination and customs restrictions can affect transit. Confirm your required date before ordering. Standard shipping and processing is US$85 for eligible physical orders below US$500, and free at US$500 or more. Checkout confirms applicable charges and any separately selected service.
Clear details. A considered choice.
Making your piece with Leyloon
Share your idea
Begin with your words, a stone or a photo you have permission to share.
Review the design
Explore a design direction and review the important details with Leyloon.
Choose your quote
Confirm the stone, metal, fit, included work and written price before ordering.
Made for you
Leyloon makes the agreed piece and shares the updates available for your order.
- Design changes
- Discuss the changes you want with Leyloon. Included design changes and any additional cost are confirmed in your written quote.
- Timing
- Making time is confirmed for your piece. Delivery is typically 3–10 business days after production. Carrier, destination and customs restrictions can affect transit. Confirm your required date before ordering.
- Price
- Current listing prices appear with each piece or loose stone. A complete custom piece receives its own written quote.
- Stone reports
- Review the grading laboratory and available report on the exact stone listing. A design illustration does not establish certification.
- Metals
- Choose your metal direction in Create. Leyloon confirms the exact metal, purity and available options in the quote.
- Shipping
- Standard shipping and processing is US$85 for eligible physical orders below US$500, and free at US$500 or more. Checkout confirms applicable charges and any separately selected service. Shipping details
- Returns
- Eligible items have a 60-day return window from delivery. Custom, engraved, altered and made-to-order pieces may have different terms. Return shipping is usually paid by the customer. Full return terms
5.0 / 5 · 553 Etsy reviews
Shop reviews · source checked Oct 31, 2026. Reviews describe customers’ individual orders.
“Exactly what I wanted.”
“Max was incredibly responsive, patient, and willing to explain the process every step of the way.”