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december birthstone jewelry

Skip it

A small market ($13K/yr) — this niche doesn't clear our bar today.

Market size 3Growth 42Conversion 10Competition 23Returns 40Price range 87Avg price 92Brand share 51Review moat 43Quality gap 58

Avg price

Great$21.77

avg listing price — sweet spot $15–$100

Price range

Great$8.38–$78.34

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Good74%

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

Review moat

Okay2,157.67

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+13.4%

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

Returns

Okay3.8%

return rate — above 5% kills the launch gate

Competition

Bad72%

top-5 click share — a locked-up shelf

Conversion

Bad0.8%

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

Market size

Bad$13K

$13K/yr · 72K searches

According to Flapen's Amazon United States niche tracking, december birthstone jewelry is a $13K/yr Amazon United States market (72K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 37/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

december birthstone jewelry market data

Units sold / yr
750–1K
avg 0–100/product
Revenue / yr
$16K–$22K
units × avg price
Conversion rate
0.8%
Avg BSR
#235
Page quality
0%
Prime
100%
Sponsored
73%
Out of stock
0.0%
Avg brand age
33 months
Avg seller age
191 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

13 falling

Sellers

21

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

19%

  • JSJOY29%
  • Poxtex16%
  • Pls Back15%
  • ZKJTEARY7%
  • RLMOON7%
  • kate spade new york7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +13.4% search growth over the last 90 days.
8K6KSpike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 14.3×

Top december birthstone jewelry 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.

0%10%$1K20%$3K30%$4K40%$5K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

What buyers say about december birthstone jewelry

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

What buyers love

Color19%

“Fit and color of jewel was accurate and I got so many compliments”

Precious Gemstone15%

“Stones are beautiful in the ring”

Chain/Key Quality13%

“Great necklace”

Quality-Overall13%

“Great product”

Gifting Purpose8%

“Was a gift for granddaughter”

Shape/Style8%

“Its very trendy and a simple”

Rusts/Corrodes8%

“doesnt rust”

Size-Overall4%

“Fit and color of jewel was accurate and I got so many compliments”

Strength4%

“Sturdy too”

Comfort-Overall3%

“Both rings are very comfortable on”

What buyers complain about

Size-Overall42%

“Runs small”

Quality-Overall25%

“discusting quality for price almost ripped my ears apart trying to get the cheap backings off”

Color17%

“This was way more yellow in person”

Durability8%

“Stones clouded up within two months”

Top return reasons

Size-Overall37%
Color28%
Quality-Overall7%
Advertised Vs Actual Product7%
Metal Authenticity4%
Value For Money4%
Chain/Key Quality3%
Precious Gemstone1%
Thin1%
Shape/Style1%

Common questions

Is december birthstone jewelry profitable to sell on Amazon United States?
The niche generates $13K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +13.4%. Flapen's verdict: Skip it (37/100).
How competitive is the december birthstone jewelry niche?
13 brands and 21 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in december birthstone jewelry?
Top complaints mined from reviews: Size-Overall, Quality-Overall, Color. The return rate is 3.8%.
When does demand for december birthstone jewelry peak?
Demand peaks in Nov–Dec; the busiest month runs 14.3× the quietest.
What does it cost to enter the december birthstone jewelry niche?
Listings span $8.38–$78.34; the average listing price is $21.77 (sweet spot $15–$100). The average incumbent carries 2,158 reviews — the moat a new listing must climb.