A buyer in Toronto once ordered 24 oval moissanite solitaires, photographed them in the catalogue, and returned 11 of them after retail clients said the stone looked "skinny" on the finger. The ovals were correctly cut. They were correct at 1.33 length-to-width, which is the textbook ratio for an oval. What the catalogue photo did not show was how that same stone reads on a size 7 finger next to a 2.2 mm band. Shape choice for a custom ring is a finger-perspective decision, not a lab-spec decision.
Moissanite comes in the same cutting shapes as diamond, but its higher refractive index (2.65 versus diamond's 2.42) changes how light returns, especially on elongated cuts. Below are the face-up and on-finger numbers we quote buyers so they do not have to learn that difference through returns.
Round brilliant: the default, and why
Round is 62% of our custom moissanite engagement orders. It hides off-center culets the best, reads largest on a given carat, and is the most forgiving cut when the stone is set into a custom head. We stock rounds from 4.0 mm (0.25 ct equivalent) up to 12.0 mm (3.0 ct equivalent). For a custom head we model the seat to the measured girdle, not the nominal mm, because a 6.5 mm round can measure 6.42 to 6.58 across production.
Oval, pear and marquise: length-to-width is the retail decision
Elongated shapes are where returns happen. We quote two ratios on every custom oval order: a 1.33:1 "classic" oval and a 1.60:1 "elongated" oval. The Toronto buyer above quoted 1.50:1 in the catalogue, which is between the two, and the on-finger look split their clients. Pear is usually 1.45 to 1.55:1; marquise runs 1.80 to 2.10:1. On a narrow band (under 2.0 mm) an elongated shape reads slimmer still, so we step the ratio down by 0.10 when the buyer pairs it with a slim shank. Our shape reference covers the same ratios for stock heads.
Because moissanite's RI is higher than diamond's, elongated cuts show a darker bow-tie more visibly when cut to maximize carat. We specify stones cut to IGI's optical symmetry standard and reference IGI's moissanite grading as the lab vocabulary buyers can put on their listing.
Emerald and Asscher: step-cut moissanite
Step cuts in moissanite are the smallest segment, roughly 8% of custom orders. They show body color and inclusions more readily than brilliant cuts, so we grade them at DEF color equivalent on a custom order. Emerald cut moissanite reads about 15% smaller face-up than a round of the same mm, which is why we quote it in mm, not carat equivalent. Buyers who want a step-cut look often pair it with a halo to add visible size; our halo micro-pave durability guide lists the prong math for that combo.
Cushion and radiant: corner wear
Cushion and radiant corners chip more easily than rounded outlines because the corner is exposed. On a custom head we add a corner guard (a small metal bead at each of the four corners) at no extra charge when the stone is 7 mm or larger. We do not add corner guards on rounds or ovals. This is the same reason lab-grown diamond producers specify corner protection on square cuts; the failure mode is identical across transparent stones.
On-finger vs catalogue: size up the band
A 6.5 mm stone on a 2.5 mm band reads 15% wider than the same stone on a 1.6 mm band, because the band shoulders take up visual real estate. Buyers who want the stone to look large on the finger should run the slimest band their pricing allows, not the largest stone. Our men's band design notes show the reverse: a wider band makes a smaller stone look proportional.
Which moissanite shape returns the fewest refunds?
Round brilliant, at roughly 4% refund rate. Elongated ovals and marquise run closer to 12% when the ratio is not matched to the band width.
Does moissanite look bigger than diamond on the finger?
Moissanite has a 10% to 15% larger apparent size for the same mm because of its higher brilliance and lighter body, but only when cut to a symmetric standard.
What length-to-width ratio do you recommend for an oval?
1.33:1 for a classic look, 1.60:1 for a slim look. Pair the slim ratio with a band of at least 2.2 mm so it does not disappear on the finger.
Can you cut a custom moissanite to a buyer's ratio?
No. We source graded moissanite to IGI specs; custom faceting is not part of our service. We do spec the head to the stone's measured girdle.
Do step cuts show more inclusions in moissanite?
Yes. Step cuts expose the table and pavilion more than brilliant cuts, so we only supply DEF-color, eye-clean step-cut moissanite on custom orders.
Send us the finger size, band width and the reference shape you are quoting. We will return a mm-to-carat table with the on-finger render for two ratio options. Get your moissanite shape spec sheet today.
Frequently Asked Questions
Is moissanite a good diamond alternative for retail buyers?
Yes for price-sensitive customers who want brilliance and hardness. Moissanite ranks 9.25 on the Mohs scale, holds up to daily wear and costs a fraction of a natural diamond of the same size, so it resells fast in bridal and fashion lines.
What is the minimum order for wholesale moissanite?
MOQ starts at 50 pieces per design for stock items. Custom cuts and private-label settings usually start at 100–300 pieces depending on the mold.
Do you provide certificates with moissanite stones?
Yes. Every parcel ships with GRA or IGI documentation listing carat weight, color grade and cut. We recommend passing the certificate to your end customer for trust.
How long does sample and bulk production take?
Samples ship in 3–5 days. Bulk runs take 15–20 days under 500 pieces, and 25–30 days for custom work.
