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Lab Grown Cushion Cut Diamond Rings

12 designs

FAQ

A lab grown cushion cut diamond ring features a cushion cut diamond — a modified brilliant cut with a soft square-to-rectangular outline and rounded corners — produced in a laboratory rather than mined. Cushion cut lab grown diamonds are chemically identical to mined diamonds, graded by IGI or SGL using the 4C framework, and set in 14KT or 18KT BIS hallmarked gold. They are available in solitaire, halo, and side stone ring designs.
A chunky cushion cut has larger, open facets that produce broad, bold flashes of light individually visible to the eye. A crushed ice cushion cut has a higher density of smaller facets that create a granular, shimmering sparkle pattern resembling crushed ice. Chunky cushions perform well in all lighting conditions. Crushed ice cushions are highly active in direct sunlight but can appear darker in lower-light indoor settings. Both are valid cushion cut varieties.
Yes. The cushion cut is a strong engagement ring choice, particularly for buyers who want a ring with distinctive character and a vintage or romantic aesthetic. It is the second most popular diamond shape for engagement rings. Cushion cuts are available in lab grown diamond formats with IGI or SGL certification, making them fully documentable. They suit a range of settings from classic four-prong solitaires to halo and side stone designs.
Cushion cut diamonds can appear slightly larger face-up than round brilliants of equivalent carat weight in some configurations, because the cushion's flat table and shorter depth proportions can increase the visible surface area. However, this varies significantly by individual stone. The cushion's broader, warmer sparkle pattern can create a perception of greater visual presence than the tighter brilliance of a round, even at equivalent carat weights.
For a square cushion cut that looks balanced from above, a length-to-width ratio between 1.00 and 1.05 is ideal. For a slightly elongated cushion that creates a subtle finger-lengthening effect, ratios between 1.10 and 1.20 work well. Ratios above 1.25 produce a clearly rectangular outline. The choice is personal and depends on how the wearer prefers the stone to read on the finger. In-person comparison of different ratios is recommended before purchase.
A four-prong open setting placed at the corner zones of the cushion is the most common solitaire configuration and allows the soft sides of the stone to read clearly. An eight-prong setting provides greater security and a more classical cushion aesthetic. A halo setting significantly amplifies the visual size of a cushion centre stone. For buyers who prefer a vintage character, milgrain or filigree details in yellow gold complement the cushion's historical associations well.
Pricing depends on the carat weight, length-to-width ratio, facet pattern (chunky vs crushed ice), clarity, colour, setting style, and gold purity. Lab grown cushion cut diamonds are available at significantly lower price points than mined equivalents of the same 4C grade. Contact Lucira or visit an experience centre for current pricing on specific carat weights and settings.
Yes. Lab grown cushion cut diamonds are graded by IGI (International Gemological Institute) and SGL (Solitaire Gemological Laboratories) in India. IGI grading for cushion cut diamonds assesses clarity, colour, and carat weight, and provides a documented assessment of symmetry, polish, and proportions. For cushion cuts, face-up visual assessment is as important as individual grades because the modified brilliant facet pattern varies significantly between stones of the same grade.
G to H colour lab grown diamonds are the most practical choice for cushion cut rings. The cushion's modified brilliant facet pattern and broader sparkle character are more forgiving of slight body colour than a round brilliant, meaning G-H colour cushions can appear face-up as white as D-E colour rounds in equivalent settings. For yellow gold settings, G to I colour is appropriate. For white gold settings, F to H delivers clean face-up appearance.
Lucira offers a buyback policy on its lab grown diamond jewellery, including cushion cut diamond rings. Specific buyback terms should be confirmed with the Lucira team at the time of purchase, as conditions may vary by product. Retain your IGI or SGL certificate, as it is required for any future buyback or exchange transaction. Lucira's 100% lifetime exchange policy allows you to trade your ring for a new Lucira piece at any time.