Is necklace extender profitable to sell on Amazon United Kingdom?

The niche generates £108K/yr across 27 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +4.8%. Flapen's verdict: Worth a look (54/100).

How competitive is the necklace extender niche?

22 brands and 33 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 66% of demand.

What do buyers complain about in necklace extender?

Top complaints mined from reviews: Durability, Color, Quality-Overall. The return rate is 0.6%.

When does demand for necklace extender peak?

Demand peaks in Dec; the busiest month runs 1.7× the quietest.

What does it cost to enter the necklace extender niche?

Listings span £3.04–£14.11; the average listing price is £5.54 (sweet spot $15–$100). The average incumbent carries 588 reviews — the moat a new listing must climb.

necklace extender

Worth a look

Shows low returns (0.6%), but prices mostly outside the sweet spot ($3.04–$14.11) keeps it on the watch list.

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Conversion

Incredible12.3%

search→purchase rate — share of searches ending in a sale

Review moat

Good587.67

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Brand share

Good66%

top-5 brand share — brands hold most of the demand

Competition

Good54%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+4.8%

90-day search growth — must beat 0% to launch

Market size

Okay£108K

£108K/yr · 159K searches

Avg price

Bad£5.54

avg listing price — sweet spot $15–$100

Price range

Bad£3.04–£14.11

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals No Dominant Brand

According to Flapen's Amazon United Kingdom niche tracking, necklace extender is a £108K/yr Amazon United Kingdom market (159K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Dec. Verdict: Worth a look — 54/100.

Data updated Jul 23, 2026 · scored weekly · How we score niches

necklace extender market data

Units sold / yr: 15K–20K; avg 750–1,000/product
Revenue / yr: £83K–£111K; units × avg price
Conversion rate: 12.3%
Avg BSR: #63
Page quality: 0%
Prime: 100%
Sponsored: 89%
Out of stock: 1.1%
Avg brand age: 26 months
Avg seller age: 201 days

Competition & brand share

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 rising

Sellers

Top-5 brand share

66%

Top 20: 98%

Top-5 click share

54%

Top 20: 92%

Open market

29%

ALEXCRAFT17%
BOXOB16%
KUTKE13%
TEAMIOULING10%
Mozeat Lens10%
Bonison5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +4.8% search growth over the last 90 days.

Peak months: Dec · busiest ÷ quietest = 1.7×

Open Trend

Top necklace extender search terms

necklace extender58K/yr +6.5%10.5% conv.
necklace extender silver19K/yr -8.1%12.7% conv.
bracelet extender silver13K/yr +10.8%6.7% conv.
silver necklace extender14K/yr -6.8%11.5% conv.
chain extender for necklace11K/yr -0.7%8.5% conv.
bracelet extender13K/yr -3.3%3.2% conv.
sterling silver necklace extender9K/yr +14.1%6.6% conv.
silver chain extender9K/yr -6.2%8.8% conv.
sterling silver chain extender5K/yr +68.2%4.2% conv.
chain extender6K/yr +27.3%5.1% conv.

All search terms

Top necklace extender products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

4pcs Necklace Extender Silver 2/4/6/8 Inches Necklace Clasp Extender Chain Extenders for Necklaces Bracelets Jewelry Making Women Men (4 Sizes)

BOXOB£4.024.3★921 rev

4pcs Necklace Extender Silver 2/4/6/8 Inches Chain Extenders Necklace Clasp Extender silver necklace extender chain extender for necklace for Women Men Necklaces Bracelets Jewelry Making Bracelet

KUTKE£3.594.4★6 rev

TEAMIOULING 6 Pcs Necklace Extender Gold Plated Silver Necklaces Extenders Chain 2 4 6 Delicate Chain Extenders for Necklaces Bracelet Anklet Jewelry Making for Women Men

TEAMIOULING£3.064.5★43 rev

Necklace Extender 3 PCS Silver Plated Alloy Chain Extenders Jewelry Extenders with Lobster Claw Clasp 2/3/4 inch Chain Extension for Necklaces Braclets Anklets Jewelry Making Supplies for Women

Mozeat Lens£3.464.5★138 rev

Silver Necklace Extender Chain for Bracelet Jewelry Extension Chain Finding

ALEXCRAFT£7.204.3★205 rev

Newest

by launch date

4pcs Necklace Extender Silver 2/4/6/8 Inches Chain Extenders Necklace Clasp Extender silver necklace extender chain extender for necklace for Women Men Necklaces Bracelets Jewelry Making Bracelet

KUTKE£3.596 rev

4mo ago

TreeTribe 6 Pcs Necklace Extender Silver and Gold Stainless Steel Gold Silver Necklace Extender with Lobster Claw Buckles Jewelry Extenders for Suspenders Bracelets Anklets and Other Jewelry Making

TreeTribe£3.044 rev

8mo ago

3-Piece Stainless Steel Jewelry Extender Set for Necklaces Bracelets & Anklets - Adjustable Silver Chain Extender for DIY Jewelry Making

Lyntrioris£3.154 rev

10mo ago

6PCS Necklace Extender Stain/Less St/EEL Silver Necklace Extender Fine Chain Extender for Jewelry Making Jewelry Accessories for Necklaces Suspenders Bracelets Anklets Stainless Silver Chain

CiLiHai£3.864 rev

10mo ago

GodtKowty Sterling Silver Necklace Extender Includes 3 Adjustable Chains (1 2 3) for Necklaces Bracelets and Anklets - Durable Hypoallergenic Jewelry Extenders for Women

GodtKowty£6.059 rev

1y ago

What buyers say about necklace extender

What buyers praise and complain about, mined from review topics.

What buyers love

Value For Money21%

“Well worth it”

Advertised Vs Actual Product19%

“As described”

Quality-Overall14%

“Good quality”

Chain/Key Quality10%

“Chains”

Ease Of Use9%

“I can wear it comfortably”

Size-Overall7%

“Fit my piece perfectly”

Add-Ons/Attachments3%

“are easy to attach to the necklace”

Fastener Quality2%

“so you can also use this on chains with fiddly clasps to make them easier to put on”

Durability2%

“I think that these useful extenders are durable and sturdy”

Strength2%

“Sturdy and good quality”

What buyers complain about

Durability25%

“Broken after 4 months”

Color19%

“But the gold ones went black after a week”

Quality-Overall11%

“terrible quality and break constantly”

Size-Overall8%

“Smaller than I thought”

Strength8%

“item is very flimsy very thin”

Thickness6%

“was not expecting thicker links given photos”

Chain/Key Quality3%

“Very poor quality chain broke putting it on”

Allergies3%

“unfortunately tarnishes very easily and caused a skin reaction and itchiness”

Advertised Vs Actual Product3%

“Not strictly what was advertised”

Value For Money3%

“Waste of money”

Top return reasons

Size-Overall35%

Color11%

Durability7%

Thin6%

Quality-Overall5%

Compatibility-Overall4%

Strength4%

Fastener Quality4%

Metal Authenticity4%