3 to 5 Carat Green Lab Grown Diamond Engagement Ring · Oval Cut Hidden Halo | Selene
An oval-cut fancy green lab grown diamond engagement ring, available in 3, 4, or 5 carat — set as a six-prong solitaire with a hidden halo of six round accents. The Selene pairs the elongated grace of an oval center with a sleek tapered band and a halo of brilliance tucked discreetly beneath the basket, in your choice of solid gold or platinum.
- Three carat options — 3 ct (10x7mm), 4 ct (12x8mm), or 5 ct (13.5x9mm) fancy green lab grown diamond
- Oval cut — elongated brilliant facet pattern, finger-flattering silhouette
- Hidden halo: Six round accent diamonds (1.30mm) nestled under the oval basket — only visible from side and top angles
- Six-prong setting — classic, secure, lets the oval breathe
- Band width: 2.5mm — slim tapered profile that elongates the finger
- 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 $4060.00
Full Specifications
| Specification | Detail |
|---|---|
| Center Stone | Lab Grown Diamond, Fancy Green, Oval, VS Clarity, Excellent Cut — choose 3, 4, or 5 ct |
| Center Stone Size | 3 ct — 10x7mm 4 ct — 12x8mm 5 ct — 13.5x9mm Diamond size guide |
| Setting | Solitaire with Hidden Halo (six-prong) |
| Hidden Halo | Six round lab grown diamonds — 1.30mm each (0.06 ct total), nestled beneath the basket |
| Total Carat Weight | 3.06–5.06 ct (center + 0.06 ct hidden halo) |
| 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 Green Lab Grown Diamonds
Green diamonds are exceptionally rare — most natural greens get their color from millions of years of natural radiation in the earth, an effect that is almost impossible to recreate identically and even rarer in fancy-vivid saturation. The 41-carat Dresden Green (one of the largest natural fancy green diamonds ever discovered) and the 5.03-carat Aurora Green (sold for $16.8M in 2016) are among the most famous. Lab grown technology now makes the depth of a fancy green diamond accessible without the seven-figure natural cost.
Mohana's green lab grown diamonds are chemically, optically, and physically identical to mined green diamonds — graded by the same IGI and GIA laboratories. The green color is part of the diamond's atomic structure and will not fade.
Green diamonds pair beautifully with yellow gold (tone-on-tone) or white gold and platinum (cool contrast). Explore the full green diamond collection.
Frequently Asked Questions
Are green lab grown diamonds real diamonds?
Yes. Lab grown green diamonds are 100% real diamonds — same crystal structure, same hardness (10 on the Mohs scale), same optical brilliance as mined green diamonds. Every Mohana green diamond is certified by IGI or GIA.
What is a hidden halo?
A hidden halo is a small circle of round accent diamonds set just below the gallery of the center stone — invisible when the ring is viewed straight-on from above, but adding sparkle and visual lift when viewed from the side or at an angle. The Selene hidden halo uses six 1.30mm round lab grown diamonds (0.06 ct total) tucked beneath the oval basket.
What carat options are available?
The Selene comes in three center stone sizes: 3 carat (10x7mm), 4 carat (12x8mm), and 5 carat (13.5x9mm). Choose your carat at the top of this page; the price updates per option.
How many side stones does this ring have?
Six round lab grown diamonds — 1.30mm each (0.06 ct total weight) — arranged as a hidden halo beneath the oval basket. 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 measures 2.5mm wide — slim and tapered to elongate the finger and let the oval center stand out. The band width is consistent across all metal and carat options.
How much does this green lab grown diamond engagement ring cost?
Pricing scales with the carat you choose. Starting prices in 10K solid gold:
- 3 ct — starts at $4060.00 (10K solid gold)
- 4 ct — starts at $5050.00 (10K solid gold)
- 5 ct — starts at $6140.00 (10K solid gold)
14K, 18K, and platinum add roughly $200 per tier. A natural mined green oval of comparable quality would cost $60,000+ to $600,000+.
Can this ring be resized?
Yes — complimentary resizing within the first year.
Why a six-prong setting on an oval?
Six prongs (two at each tip plus one on each side) give the oval extra security at the wider points and reinforce the silhouette, while still leaving the elongated stone and its brilliance fully on display.
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 for a custom variation in a different carat, shape, or metal combination.
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