This is one of the highest-leverage stocking decisions in a necklace case, and most retailers get it wrong by spreading themselves too thin across lengths. The US market has a very clear demand curve, and once you know it, your sell-through improves immediately without you having to discount. Let me lay it out the way I'd lay it out for a first-time buyer at the Atlanta Jewelry Show.
The length demand curve (US, sterling silver fashion channel)
- 18 inch — roughly 55% of units. This is the default. It lands right at the collarbone, works over crew neck and v-neck, and is the length customers picture when they say "a necklace." If you stock nothing else, stock 18.
- 16 inch — roughly 20% of units. The choker-adjacent length. Strong with younger shoppers (teens, early 20s), petite customers, and anyone layering. Also the default for pendant display on mannequins.
- 20 inch — roughly 12% of units. The "falls one inch below collarbone" length. Driven by customers who tried on 18 and said it felt tight. Very common as a second purchase.
- 24 inch — roughly 8% of units. Opera-lite, pendant-on-long-chain, and men's chains. Women buy it for layered looks; men buy it in box, rope, and cuban in 2–4mm.
- 14 and 30+ inch — under 5% combined. 14 is almost purely teen/junior. 30+ is lariat and festival, slow unless your market skews bohemian.
How to actually stock it
The mistake I see repeatedly is carrying every chain style in every length. That splits your open-to-buy five ways and leaves you with two of each — too few to display well, too many to ever turn fast. Instead, do this:
- Carry your top 3 chain styles (box, cable, rope) in 16, 18, and 20. That's nine SKUs and covers ~87% of demand.
- Carry cuban and figaro only in 18, plus 24 for men's cuban. These are style-driven, not length-driven.
- Do not stock 14, 22, 28, or 30 inches unless a specific customer asks. You can order a 14 inch from your supplier in 3–5 business days; the customer will wait.
- Every chain 16 inches and up should come standard with a 2 inch extender. This single move collapses the 16 vs 18 vs 20 problem: the customer buys the 18, wears it at 18, 20, or 22 depending on neckline. Extenders cost you $0.35–$0.60 a piece and they lift perceived value enormously.
Men's chain length note
Men are a separate ladder. 20 inch is the men's default (sits at the collarbone over a t-shirt), 22 inch is the second most common (falls to top of sternum), and 24 inch is the "long" look (offensive lineman, rapper aesthetic, cross pendant wearers). Don't stock men's chains in 16 or 18 — they read as women's and confuse the customer. Men also buy by millimeter, not by inch: stock 2mm, 3mm, and 4mm cuban and rope, and skip the 1mm and 1.5mm entirely for him.
Display implication
Hang your chains on a length-graded wall: all 16s on one bar, 18s on the middle and most-lit bar, 20s on the next. Put a printed sign at eye level that reads "18 inch = collarbone, 20 inch = below collarbone, 16 inch = close to neck." Customers who can't picture the length will hesitate and leave; customers who can picture it buy in under 90 seconds. Test chains on a bust form at three lengths so customers can walk up and see it on skin tone close to theirs.
Reorder math
If you open with 30 chains across styles, spend roughly $280–$420 landed, plan it like this: 17 in 18 inch, 6 in 16, 4 in 20, 3 in 24 (men's). Reorder the 18s first. If a length sits for 90+ days, swap that length for another style in 18 rather than reordering the slow length. Over 12 months, the winners will emerge and your wall will tune itself — but only if you gave the 18 inch the display and the depth to win in the first place.
Neckline and demographic notes
A few demographic quirks that sharpen the ladder. Petite customers (under 5'4") skew 16 inch heavily — 18 lands too low on a shorter torso and reads as "borrowed." If your store skews petite, bump 16 inch from 20% to 30% of units. Taller customers (5'8"+) skew 20 and 24 inch; 18 hits too high on a long neck and looks like a choker. Mature shoppers (55+) buy 18 and 20 almost exclusively and rarely touch 16. Teens and college shoppers buy 16, then layer with 18 and 20 — they are the reason layering sets exist. If you know your local demographic, tilt the ladder by 5–10% and your sell-through tightens immediately. One more: pregnancy and nursing customers buy longer lengths (20–24) because they need to slip the necklace over the head without unclasping — a quiet sub-niche worth knowing if your store serves young moms.