Coffin Cut Lab-Grown Diamond Engagement Ring Set in 14K Solid

Part cathedral, part midnight — this coffin cut diamond ring set pairs an IGI-certified D color, VVS clarity lab-grown diamond with a diamond-accented contour band, all in warm solid yellow gold. Gothic geometry, heirloom light.

The coffin cut: gothic-luxe geometry

The coffin cut is one of the rarest silhouettes in fine jewelry — an elongated, angular shape with tapered sides that reads unmistakably gothic while still catching light like a classic diamond. Where round brilliants whisper tradition, this shape makes a statement: romantic, a little dark, entirely intentional. It has become the signature of coffin cut engagement rings chosen by brides who want their ring to feel like theirs alone. If the aesthetic speaks to you, our guide to coffin cut engagement ring meaning and styling explores where the shape came from and how to wear it.

A certified lab-grown diamond, D color and VVS clarity

The center stone is a lab-grown diamond — a real diamond, chemically and optically identical to a mined one, rating a perfect 10 on the Mohs hardness scale. It arrives with an official IGI certificate documenting its D color grade (the highest on the scale, fully colorless) and VVS clarity, so its brilliance is verified rather than promised. Curious how these stones come to be? Read how lab-grown diamonds are made, or compare grading houses in our IGI vs GIA certification guide. The accent stones are lab-grown diamonds as well, graded D–F color and VVS–VS clarity, so the sparkle is consistent across both rings.

Warm solid yellow gold, three karats

This set is handcrafted in your choice of solid 10K, 14K, or 18K yellow gold, selected from the drop-down. 10K is the most durable and most affordable; 14K is the classic balance of strength, warmth, and value; 18K carries the richest, deepest yellow. Whichever you choose, the gold runs all the way through — this is the same solid construction found across our solid gold rings. Undecided? The 10K vs 14K vs 18K karat comparison guide breaks the choice down, and the design is also available in solid white or rose gold on request.

Milgrain, beadwork, and a matching silhouette

Fine milgrain and beadwork detailing edge the setting, lending the set its antique, candlelit character — a natural companion to gothic engagement rings and dark-romantic bridal styling. Because the contour band is shaped to this exact ring, the two pieces sit flush as one sculpted profile; browse more matching wedding ring sets for women if a coordinated look is what you are after. Every order arrives in a luxury ring box with free USA shipping, and every stone is conflict-free.

Sizing & care

Choose your ring size from the drop-down menu; if you are between sizes or ordering as a surprise, our find your size guide makes it easy to measure at home. Care is simple: soak in warm water with a drop of mild soap, brush gently with a soft toothbrush, and pat dry. Diamond is the hardest gemstone there is, but storing the set in its box keeps the milgrain detail and the gold’s polish pristine between wears. An optional professional appraisal can be added from the drop-down menu.