3 Carat Lab Grown Diamond Engagement Ring – Round Cut Infinity | Infinity Cross
14K Solid Gold / Rose Gold
$2,550.00
Sale price
$2,550.00
Regular price
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3 Carat Lab Grown Diamond Engagement Ring – Round Cut Infinity | Infinity Cross
$2,550.00
Sale price
$2,550.00
Regular price
A 3-carat lab grown diamond engagement ring, round-cut and set in a infinity design — handcrafted to order. The Infinity Cross pairs the brilliance of a colorless lab grown diamond with the infinity design, in your choice of solid gold or platinum.
- 3ct white center — Colorless (D-F) lab grown diamond, VS clarity
- Round cut for exceptional sparkle and timeless symmetry
- Band width: 2.5mm — balanced for the 3ct infinity 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 $2350.00
Full Specifications
| Center Stone | 3 ct Lab Grown Diamond, Colorless (D-F), Round, VS Clarity, Excellent Cut |
| Center Stone Size | 9.3mm · Diamond size guide |
| Setting | Infinity |
| Total Carat Weight | 3 ct (center stone) |
| 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 |
How Mohana Compares
Major retailers price colorless diamond engagement rings from $5,000 for a 1-carat round up to $20,000+ for 3 carat colorless premium grades. Mohana delivers IGI/GIA-certified lab grown diamonds at a fraction of that, handcrafted to your specifications, starting at $2350.00.
| Feature | Mohana Jewels | Brilliant Earth | Blue Nile | James Allen |
|---|---|---|---|---|
| Center stone | 3ct Round Colorless (D-F) VS | 1–2ct Round | 1–2ct Round | 1–2ct Round |
| Setting style | Infinity | Standard Infinity | Standard Infinity | Standard Infinity |
| Total carat weight | 3 ct | 1.5–2.5 ct | 1.5–2.5 ct | 1.5–2.5 ct |
| Band width | 2.5mm | Not stated | Not stated | Not stated |
| Metal options | 10K / 14K / 18K + Platinum | 14K / 18K | 14K / 18K | 14K / 18K + Platinum |
| Made to order | Yes — handcrafted | Pre-made inventory | Pre-made inventory | Limited custom |
| Insurance on shipping | Included free | Separate purchase | Separate purchase | Separate purchase |
| Starting price | $2350.00 | $5,000+ | $4,500+ | $4,200+ |
About White Lab Grown Diamonds
"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.
Frequently Asked Questions
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.
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 infinity 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 Infinity Cross starts at $2350.00 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 infinity setting?
Band interlocks in an infinity-loop motif around the center stone — symbolizing endless union.
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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