3 Carat Blue Lab Grown Diamond Engagement Ring – Heart Cut Three Stone
10K Solid Gold / Yellow Gold
$3,380.00
Sale price
$3,380.00
Regular price
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3 Carat Blue Lab Grown Diamond Engagement Ring – Heart Cut Three Stone
$3,380.00
Sale price
$3,380.00
Regular price
A 3-carat fancy blue lab grown diamond, heart-cut and set in a three stone design — handcrafted to order. Handcrafted in your choice of solid gold or platinum.
- 3ct blue center — Fancy Blue lab grown diamond, VS clarity
- Heart cut for the most romantic of all diamond cuts
- Side stones: Two complementary side stones (often trapezoid, pear, or trillion — ~0.5–1.8 ct each, varies by design)
- Band width: 2.5mm — balanced for the 3ct three stone center
- IGI® or GIA® certified — independent grading report included
- Your choice of metal: 10K, 14K, 18K solid gold or platinum
- Free worldwide insured shipping + lifetime warranty
Made to order in 1–2 weeks · 30-day returns · Starting at $3380.00
Have questions about this ring?Talk to a real diamond expert — we typically respond within 24 hours.
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Full Specifications
| Specification | Detail |
|---|---|
| Center Stone | 3 ct Lab Grown Diamond, Fancy Blue, Heart, VS Clarity, Excellent Cut |
| Center Stone Size | 12x8mm · Diamond size guide |
| Setting | Three Stone |
| Side Stones | Two complementary side stones (often trapezoid, pear, or trillion — ~0.5–1.8 ct each, varies by design) |
| Total Carat Weight | 3 ct center (accent carat varies by configuration) |
| Band Width | 2.5mm |
| Metal Options | 10K, 14K, 18K Solid Gold, Platinum Pure |
| Metal Colors | Yellow, Rose, White Gold |
| Certification | IGI® or GIA® diamond grading report |
| Production | Handcrafted to order — 1–2 weeks |
| Included | Free insured worldwide shipping, lifetime warranty, 30-day returns |
Why Mohana
For couples who want a real, certified diamond crafted to their exact specifications — without the retail markup of a national chain.
- Made to order, not pulled from inventory — every ring is handcrafted to your stone, finger size, and metal choice over 1–2 weeks. Your ring has never been worn or sat in a display case.
- Direct-from-workshop pricing — you pay for the diamond, the metal, and the craftsmanship. No retail floor, no franchise markup, no middleman.
- Every center stone IGI® or GIA® certified — independent grading report ships with the ring. Verify the specifications directly on the IGI or GIA portal.
- Custom variations welcome — different carat, shape, metal, or setting? Our craft team can quote any reasonable modification before production begins.
- Real human concierge — contact us directly for diamond questions, sizing help, or custom requests. We respond personally — not via bot.
About Blue Lab Grown Diamonds
Fancy blue diamonds are among the rarest colored diamonds on earth — the Hope Diamond, the Cullinan Blue, and the Oppenheimer Blue have all set auction records at $30M–$50M+ apiece. Natural blue diamonds owe their color to trace boron in the crystal lattice, and only a tiny fraction of mined diamonds show true blue saturation. Lab grown technology makes the romance of a true blue diamond accessible without the financial or ethical burden.
Mohana's blue lab grown diamonds are chemically, optically, and physically identical to mined blue diamonds — graded by the same IGI and GIA laboratories using the same scales. The boron-tinted color is part of the diamond's atomic structure, not a surface treatment, and will not fade.
Blue diamonds pair most beautifully with white gold or platinum settings, which amplify the cool blue tone. For warm contrast, choose yellow gold. Explore the full blue diamond collection.
Frequently Asked Questions
Are blue lab grown diamonds real diamonds?
Yes. Lab grown blue diamonds are 100% real diamonds — same crystal structure, same hardness (10 on the Mohs scale), same optical brilliance as mined blue diamonds. Every Mohana blue diamond is certified by IGI or GIA.
How many side stones does this ring have?
Two complementary side stones (often trapezoid, pear, or trillion — ~0.5–1.8 ct each, varies by design). For exact stone count on your specific configuration, our craft team can confirm before production — contact customer support.
What is the band width of this ring?
The band (around your finger) measures 2.5mm wide. At 2.5mm the band balances the visual weight of a 3-carat center in the three stone setting — slim enough to wear daily, substantial enough to hold the design securely. The band width is consistent across all metal options.
How much does a 3 carat blue lab grown diamond engagement ring cost?
The Mohana starts at $3380.00 in 10K solid gold and scales up with 14K, 18K, and platinum. A natural mined blue diamond of comparable size and saturation would cost $300,000 to $3M+.
Will the blue color fade over time?
No. The boron-tinted color in a lab grown blue diamond is part of the diamond's atomic structure, not a treatment. It will not fade over a lifetime of wear.
Can this ring be resized?
Yes — complimentary resizing within the first year. Full eternity bands are the exception due to their continuous diamond setting.
What is a three stone setting?
A three-stone setting flanks the center diamond with two complementary side stones — often symbolizing past, present, and future.
What's included with my ring?
The IGI® or GIA® grading report, a signed Mohana certificate of authenticity, free worldwide insured shipping, a lifetime craftsmanship warranty, a 30-day return window, and complimentary resizing within the first year.
How long does it take to make and ship?
Each ring is handcrafted to order in 1–2 weeks, then ships free worldwide with full insurance.
Can I customize this ring?
Yes — contact our team through customer support to request a custom variation in a different carat, shape, or metal combination.
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