Free express shipping · One complimentary resize within 1 year of delivery · IGI certified · Rings handcrafted in 12–16 business days

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Solitaire · Personalize below

Cushion Marquise Three-Stone Engagement Ring

From $4,100Starts at 3.00ct Cushion · D–F · VVS2 · IGI

Ring price includes the 3.00ct cushion lab-grown diamond and 14k white gold setting. Price updates with your choices. Applicable taxes are calculated at checkout.

A cushion-cut lab-grown diamond center flanked by two marquise side stones in 18K gold. The marquise sides angle outward from the cushion, elongating the visual line across the finger. Specifications Center stone: Cushion-cut lab-grown diamond, IGI certified Side stones: Two marquise-cut lab-grown diamond side stones Color & clarity: D–F / VVS2 Cut grade: GIA Excellent equivalent Setting: Three-stone with claw prongs Metal: 18K Yellow, White, or Rose Gold, hand-finished Band width: 1.8mm Inner diameter (US size 6.5): 16.9mm Certification: IGI Why this design Cushion alone reads soft and vintage. Adding marquise sides extends the finger line and pulls in the modern three-stone symbolism (past, present, future) without making the ring feel busy. Made to order Each ring is hand-finished to order. Production takes 12–16 business days, plus 5–7 business days of insured DHL Express shipping. Each order includes the IGI certificate, one complimentary resize within the first year, and lifetime cleaning. Frequently asked Is this a real diamond? Yes. Lab-grown diamonds are chemically and optically identical to mined diamonds — same carbon structure, same 10 Mohs hardness, same fire. The only difference is origin. Will the marquise sides feel sharp on the finger? No — the marquise tips are set in the same plane as the band, so the ring sits flat against the skin. The points are decorative, not exposed. Can I customize the metal or carat? Yes. Choose 14K or 18K white, yellow, or rose gold for the band, and any complementary cut for the side stones during consultation.
IGI Certified

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Typical arrival · 17–23 business days

After payment and final design confirmation.
Shipping & returns

Standard made-to-order ring production takes 12–16 business days after payment and final design confirmation. Insured shipping usually takes 5–7 business days after dispatch, with tracking and signature required.

Made-to-order means we craft a listed Sula design after you order, using the standard options shown on the product page. It does not make the piece final sale.

Request the return within 30 days of delivery. The piece must be unworn, undamaged, and returned with its original packaging and certificates. For an eligible return, we provide a prepaid, insured return label.

After the piece is received and passes inspection, we issue a full refund to the original payment method within 7 business days.

If an engraved or bespoke piece has different cancellation or return terms, we will disclose them in writing before payment. If no exception is disclosed, our standard 30-day return policy applies.

Shipping & timeline → · Full return policy →
Sizing & lifetime limited warranty

One complimentary resize within 1 year of delivery. We provide a prepaid, insured label for the complimentary resize.

Some pavé, eternity, intricate, or large size adjustments may require a different solution. We will confirm feasibility and any cost before work begins.

Lifetime limited warranty for manufacturing defects in craftsmanship and metal. Normal wear, scratches, accidental damage, loss or theft, chemical damage, and third-party repairs or alterations are not covered.

Resizing details → · Warranty & care →

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Starting configurationChoose your diamond, then review metal and ring size.
Stone3.00ct Cushion · D–F · VVS2 · IGI
Metal14K White Gold
SizeUS 6 · review before adding to cart

Four Promises

Every ring, cared for beyond the sale.

IGI Certified

Every center stone ships with its independent IGI report — color, clarity, cut, and carat, verified by a third party.

Made in Our Atelier

Standard made-to-order ring production takes 12–16 business days after payment and final design confirmation. Setting consistency is quality-checked across every size.

Complimentary Resizing

One complimentary resize within 1 year of delivery. Lifetime cleaning and prong inspection included.

Free Insured Shipping

FedEx or DHL, fully insured and signature-required. Eligible unworn pieces may be returned within 30 days of delivery. For an eligible return, we provide a prepaid, insured return label.

A Quiet Word

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Email us one question — a stone, your size, the timeline — and we'll answer the same day. No call, no pressure, nothing to sell. Prefer to talk it through? Book a 15-minute video call instead.

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Common Questions

Frequently Asked Questions

Most standard made-to-order rings arrive in 17–23 business days after payment and final design confirmation.

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