Certified Lab-Grown Cushion Diamonds
Frequently Asked Questions (FAQs)
Stock both if budget allows. Modified brilliant cushion cuts suit contemporary engagement positioning where scintillation drives the sale, while standard cushion faceting suits heritage and vintage-inspired retail with broader facets and softer light return. LabGems holds IGI-certified cushion cuts in both faceting styles in active Antwerp inventory.
If stocking a single ratio, 1.10 to 1.20 captures the broadest retail demand: slightly elongated, finger-flattering, but recognisably cushion. For dedicated square proportions at strict 1.00 to 1.05 ratios, LabGems holds a separate square cushion collection alongside this elongated cushion range.
Yes. Cushion cuts feature in the LabGems coloured lab-grown diamonds collection across pink, blue, green and orange saturations, in-stock from 0.13ct to 9.00ct. Coloured lab-grown stones price roughly 70% below natural fancy colour, with IGI certification included on coloured stones from 0.30ct upward.
Cushion cuts span approximately 0.30ct through 5.00ct in LabGems active Antwerp inventory, covering both faceting styles and both profile ratios. Standard sizes ship within 1 business day; custom specifications ship within 7-10 business days. For halo and pave work around a cushion centre, 1ct melee parcels complete the design, with a €500 minimum across purchases.
LabGems supplies cushion cuts both IGI-certified and non-certified. Non-certified wholesale cushion stock prices around 20% lower than certified equivalents, suiting production runs and price-led retail. Certified cushion cuts ship with IGI documentation from Antwerp, while the non-certified fancy shape collection covers buyers who do not need individual reports.
Cushion cut lab-grown diamonds offer the broadest configuration choice of any shape in the certified inventory. Trade buyers can select between modified brilliant or standard faceting, and between square or elongated rectangular profiles. Each combination produces a commercially distinct product — modified brilliant for contemporary scintillation, standard cushion for romantic vintage character, square for traditional balance, elongated for finger-flattering proportion. Building cushion inventory means choosing which combinations to stock based on retail positioning.
Sourcing and Specifications
Active Antwerp inventory includes cushion cuts from approximately 0.30ct through 5.00ct across both faceting styles and both profile ratios. All certified stock is supplied with IGI documentation. Standard sizes ship within 1 business day; custom specifications ship within 7 business days. A €500 minimum applies across all certified purchases. For dedicated square-only inventory at strict 1.00-1.05 ratios, see the certified square cushion collection.
Modified Brilliant vs Standard Cushion Faceting
Modified brilliant cushion (also called cushion brilliant) features additional faceting beneath the table to heighten scintillation, producing a sparkle profile closer to round brilliants while retaining the cushion outline. Standard cushion (also called cushion antique) preserves broader, chunkier facets that reference old-mine cut antique diamonds, producing softer, romantic light return with larger flashes rather than fine scintillation. Modified brilliant suits contemporary engagement positioning; standard cushion suits heritage, Edwardian, and Art Nouveau retail contexts. Both are commercially viable; the selection depends on the retail audience.
Square vs Elongated Profile
Square cushions hold L:W ratios between 1.00 and 1.05, producing a balanced square outline. Elongated cushions extend from 1.10 through 1.30, producing a rectangular profile that flatters the finger and pairs effectively with east-west settings. Square cushions perform commercially in traditional solitaire and halo applications. Elongated cushions perform in contemporary engagement designs where finger appearance is a buying consideration. Trade buyers stocking both profiles will capture both audiences. For brilliant-cut alternatives in similar elongated proportions, consider oval or radiant cuts.
Halo and Pavé Applications
The cushion's softly rounded corners pair particularly well with halo settings, hidden halos, and scalloped pavé bands. Milgrain detailing enhances vintage-inspired cushion designs. Three-stone configurations with smaller cushion or trapezoid side stones produce cohesive heritage compositions. For accent stones, single round melee supplies pavé and halo inventory with same-day dispatch, while 1ct melee parcels support production-quantity applications.
Selection Notes for Cushion Cuts
- Decide faceting style by retail positioning: modified brilliant for contemporary, standard for heritage
- Stock both square and elongated profiles where possible to capture both audiences
- VS2 or better clarity for stones above 1.00ct; SI grades viable in smaller sizes
- Excellent or Very Good symmetry for balanced corner-to-corner geometry
- Pair with halo, hidden halo, or scalloped pavé settings for vintage retail conversion