4 Carat Lab Grown Diamond Engagement Ring – Radiant Cut Three Stone | Tacori

A 4-carat lab grown diamond engagement ring, radiant-cut and set in a three stone design — handcrafted to order. The Tacori pairs the brilliance of a colorless lab grown diamond with the three stone design, in your choice of solid gold or platinum. 4ct white center — Colorless (D-F) lab grown diamond, VVS clarity Radiant cut for the fire of a round with the elegance of an emerald cut Side stones: Two complementary side stones (often trapezoid, pear, or trillion — ~0.5–1.8 ct each, varies by design) Shank width: 2.5mm — balanced for the 4ct 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 $3800.00 Full Specifications Center Stone 4 ct Lab Grown Diamond, Colorless (D-F), Radiant, VVS Clarity, Excellent Cut Center Stone Size 11.50 x 8 mm · 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 4 ct center (accent carat varies by configuration) Shank 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 $3800.00. Feature Mohana Jewels Brilliant Earth Blue Nile James Allen Center stone 4ct Radiant Colorless (D-F) VVS 1–2ct Radiant 1–2ct Radiant 1–2ct Radiant Setting style Three Stone Standard Three Stone Standard Three Stone Standard Three Stone Total carat weight 4 ct+ 1.5–2.5 ct 1.5–2.5 ct 1.5–2.5 ct Shank 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 $3800.00 $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. 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 shank width of this ring? The shank (the band around your finger) measures 2.5mm wide. At 2.5mm the band balances the visual weight of a 4-carat center in the three stone setting — slim enough to wear daily, substantial enough to hold the design securely. The shank width is consistent across all metal options. How much does a 4 carat lab grown diamond engagement ring cost? The Mohana Tacori starts at $3800.00 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 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.