3 Carat Lab Grown Diamond Engagement Ring – Round Cut Halo | Catalina

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.

"White" diamonds — the classic colorless to near-colorless grades (D through J on the GIA scale) — are the most iconic and timeless choice for an engagement ring. They reflect light cleanly across the full visible spectrum, producing the brilliance and fire that defines a diamond. Lab grown technology delivers the same D-F colorless excellence as the most premium mined diamonds, at a fraction of the cost — making top-tier 2-ct, 3-ct, and 4-ct stones realistic for the modern proposal budget.

Mohana's white lab grown diamonds are chemically, optically, and physically identical to mined diamonds — graded by the same IGI and GIA laboratories using the same 4Cs scales (Carat, Clarity, Color, Cut). Every stone receives an independent grading report you can verify, and the optical performance — brilliance, fire, scintillation — is indistinguishable from a mined diamond of the same cut grade.

Colorless diamonds pair beautifully with white gold or platinum settings, where the cool metal complements the colorless stone for a uniform, classic look. For a warmer, vintage-inspired aesthetic, choose yellow or rose gold — the contrast frames the diamond and highlights its brilliance. Explore the full colorless diamond collection.

Are white lab grown diamonds real diamonds?

Yes. Lab grown diamonds are 100% real diamonds — same crystal structure, same hardness (10 on the Mohs scale), same optical brilliance and fire as mined diamonds. Every Mohana diamond is certified by IGI or GIA using the same 4Cs scales.

How many side stones does this ring have?

Approximately 16 pavé round brilliants (~0.5 ct total). 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 4.5mm wide. At 4.5mm the band balances the visual weight of a 3-carat center in the halo 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 lab grown diamond engagement ring cost?

The Mohana Catalina starts at $2899.00 in 10K solid gold and scales up with 14K, 18K, and platinum. A mined diamond of comparable size and colorless grade would cost $8,000 to $40,000+.

What's the color grade of the center diamond?

The center stone is colorless (D-F on the GIA color scale) — the highest grade, with no detectable color even to a trained eye under ideal lighting. The 4Cs grading report is included with every order.

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 halo setting?

A halo of small diamonds surrounds the center stone, amplifying its visual size and adding sparkle from every angle.

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.