Marquise Cut Three-Stone Lab Diamond Engagement Ring
Marquise Cut Three-Stone Lab Diamond Engagement Ring
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01. Pick Your Lab Diamond
02. Pick Metal & Size
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Estimated delivery: Mar 20 - Mar 24
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CVD lab-grown diamonds, ethically made. More information about lab diamonds here.
Marquise Cut Three-Stone Lab-Grown Diamond Engagement Ring
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Note on Carat Weight: 3-Stone Masterpiece
Important Notice: The selected carat weight represents the Total Carat Weight (TCW) of all three diamonds. To ensure the most breathtaking aesthetic, Bowtie carefully selects two side stones that perfectly complement your chosen center stone's dimensions.
Our Golden Ratio Breakdown: Here is how your total carat weight is distributed between the center stone and the two side stones to achieve the iconic look shown in our photos:
- 1.00 ct total = 0.50 ct Main Stone + 0.50 ct Side Stones (0.25 ct each)
- 1.50 ct total = 0.80 ct Main Stone + 0.70 ct Side Stones (0.35 ct each)
- 2.00 ct total = 1.00 ct Main Stone + 1.00 ct Side Stones (0.50 ct each)
- 2.50 ct total = 1.50 ct Main Stone + 1.00 ct Side Stones (0.50 ct each)
- 3.00 ct total = 2.00 ct Main Stone + 1.00 ct Side Stones (0.50 ct each)
- 3.50 ct total = 2.00 ct Main Stone + 1.50 ct Side Stones (0.75 ct each)
- 4.00 ct total = 2.50 ct Main Stone + 1.50 ct Side Stones (0.75 ct each)
- 4.50 ct total = 3.00 ct Main Stone + 1.50 ct Side Stones (0.75 ct each)
- 5.00 ct total = 3.00 ct Main Stone + 2.00 ct Side Stones (1.00 ct each)
For High-End Collector Sizes (6.0ct – 10.0ct): For these monumental sizes, we utilize a specialized Masterpiece Ratio to maintain structural integrity and visual grandeur:
- 6.00 ct total = 4.00 ct Main Stone + 2.00 ct Side Stones (1.00 ct each)
- 8.00 ct total = 5.00 ct Main Stone + 3.00 ct Side Stones (1.50 ct each)
- 10.00 ct total = 6.00 ct Main Stone + 4.00 ct Side Stones (2.00 ct each)
The Bowtie Difference: We don't just "fill" the weight. Each side stone is hand-picked to match the Color and Clarity of your center stone, creating a seamless river of light across your finger.
Specifications
Specifications
*Each lab-grown diamond, like natural diamonds, is uniquely characterized.
*Images are for design reference only.
*Carat and brilliance may vary.
Product Details
Product Details
Designed with care and crafted from premium materials, our products combine durability, comfort, and timeless style.
Designed Around You
Craft your one-of-a-kind piece with ethically grown diamonds, designed to last a lifetime.
- STEP 01. You submit your request
- STEP 02. We review your design & specs
- STEP 03. Final quote confirmation
Not sure of which size to get?
Click below to view our Lab-Grown Diamond size guide and find your perfect fit.
- Ring/Band Size
- Lab Diamond Carat Size
- Pendant Size
IGI • GIA Lab-Grown Diamond Certification
CVD lab-grown diamonds, ethically made. More information about lab diamonds here.
- Color: D (Premium Color) / E / F / G
- Clarity: VVS / VS
- IGI / GIA / Non-Certified Options
Complimentary shipping
We offer complimentary shipping on all Bow Tie Lab Diamonds Inc. orders placed on the U.S. website for domestic delivery. (Expedite not included)
All Bowtie Diamond pieces are custom-made.💎
Production begins immediately after your order is placed and requires a minimum of 14 business days before shipment.
Once your order ships, you will receive a confirmation email with full tracking details.

