A gift retailer in Manchester ran out of heart-shape moissanite studs on January 28 one year and over-ordered the next, ending up with 14 unsold pairs in May. The demand curve for heart moissanite is not a straight line—it is two sharp peaks, and the gap between them is a desert. If you treat it like a year-round SKU, you get stuck. If you stock to the curve, it is one of the highest-turnover fancy shapes on the list.
Heart-shape moissanite is the most emotionally loaded shape in the catalog. It sells for Valentine's Day, Christmas, anniversaries, and just-because gifts. It also sells in bridal proposal rings, though that is a smaller slice. This article lays out the demand curve we see in our order book, the sizes that move, and how to plan a heart PO without getting stuck in March.
The two peaks and the valley
Across our last three years of heart-shaped moissanite orders, volume clusters in two windows: late November through mid-February (driven by gifting, Christmas, and Valentine's Day), and a smaller bump in late April through early June (Mother's Day and graduation). The summer months of July and August are quiet, and the month of March is a near-zero month. If you place a reorder in early March expecting the Valentine bump, you will be sitting on stones that do not sell until November.
The size mix shifts with the occasion. Valentine's orders skew small—5x5 mm and 6x6 mm studs and pendants—because they are impulse gifts. Bridal and anniversary orders skew larger, 7x7 mm and 8x8 mm solitaires. The symmetry grading matters more on hearts than on any other shape; see our heart symmetry and matching pairs piece. For broader seasonal planning, our 1ct to 5ct stocking guide covers the year-round SKUs.
Which sizes actually sell
Heart demand concentrates in three size brackets: 5x5 mm (0.5–0.7 ct), 6x6 mm (0.8–1.0 ct), and 7x7 mm (1.2–1.5 ct). The 4x4 mm and 8x8 mm brackets are niche. The 9x9 mm and above is cut-to-order. Color grading on hearts runs cleaner than on pears or emeralds because the brilliant-style facets hide color, but symmetry is make-or-break: a heart with one shoulder higher than the other reads as a defect and will be returned. We cover the symmetry checklist in symmetry grading, and color in D-F vs G-H stock.
Studs vs solitaires vs pendants
Heart studs are the volume SKU—they are bought in matched pairs and priced as impulse gifts. Heart solitaires are the bridal subset, bought as proposal rings by a smaller but higher-ticket shopper. Heart pendants sit in between. If you are building a heart catalog, start with studs in 5x5 and 6x6 mm, then add a single 7x7 mm solitaire show stone. Do not try to stock every size in every product type; that is how you get stuck. Our matched pairs guide covers stud procurement, and wholesale vs retail margin has the markup math.
How to liquidate the valley stock
Even with good planning, you will end up with a few heart stones in March. Three options work: run a spring gift promotion (hearts for Mother's Day), move the stones into a custom pendant program, or return them to the supplier under a buyback if your account terms include it. Do not discount the stones below cost on a public listing; it trains customers to wait for the sale. Instead, bundle with a chain or a cleaning cloth. For packaging that keeps the stones saleable between seasons, see export packaging and protection.
For the material background on why heart-shaped moissanite competes with diamond simulants, read the moissanite entry on Wikipedia. And remember that FTC Jewelry Guides require clear disclosure: heart-shaped or not, the stone is moissanite.
When should I place my heart-shaped PO?
For the Valentine peak, order by mid-December to leave time for setting and shipping. For Mother's Day, order by late March.
What is the best-selling heart size?
6x6 mm (about 0.8–1.0 ct). It works in studs, pendants, and small solitaires.
Do heart stones need matched certificates?
If sold as a pair (studs), yes—see GRA verification. Single solitaires can ship with one certificate per stone.
Can heart moissanite be set in a tension setting?
No. The two shoulders are fragile. Use a bezel or four-prong setting. See girdle and setting notes.
Why the heart shape works in gifting more than in bridal
Heart-shaped moissanite sells as a sentiment purchase, not as a statement purchase. The buyer is usually choosing for someone else, and the emotional symbol carries the sale more than the stone quality. That means you can stock a slightly broader color and clarity spread in heart shapes than in solitaires, because the gift recipient is unlikely to compare the stone under a loupe. It also means your marketing should lean on the occasion, not on the 4Cs. The one quality point that does matter is shoulder symmetry, which we cover in our heart symmetry guide.
One operational note: heart-shaped stones ship best on a flat paper pad, never in a cup-style gem box, because the two shoulders flex and can chip if they sit on a curved foam surface. See our packaging notes for export parcels.
Wholesale heart supply. HOLYCOME stocks heart-shape moissanite in 4x4 through 8x8 mm, D-F VVS, symmetry-graded per stone, with GRA certificates. We accept pre-season POs with delivery timed to your selling window. Apply for a wholesale account and request the current heart-stock list.
