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A small market ($63K/yr) — this niche doesn't clear our bar today.

Market size 16Growth 18Conversion 19Competition 49Returns 82Price range 83Avg price 84Brand share 64Review moat 77Quality gap 42

Avg price

Great$18.74

avg listing price — sweet spot $15–$100

Price range

Great$7.40–$57.97

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

Returns

Great1.6%

return rate — above 6% kills the launch gate

Review moat

Great465.79

avg incumbent reviews — the moat a new listing must climb

Brand share

Good66%

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

Competition

Okay56%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.5%

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

Growth

Bad-14.6%

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

Market size

Bad$63K

$63K/yr · 226K searches

Competition

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

17 falling

Sellers

31

Top-5 brand share

66%

Open market

27%

  • TGS Gems24%
  • Tirmanaz19%
  • AzureGreen9%
  • NORSE EMPIRE7%
  • Amazing Gemstone7%
  • kcrygogo6%

Product shelf

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

0%5%$3K10%$6K15%$9K20%$13K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.6% search growth over the last 90 days.
7K5KHoliday '24Spike '25Holiday '25SepDecMarJunAugNovMarMay

Peak months: Dec · busiest ÷ quietest = 1.8×

Reviews

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

What buyers love

Quality-Overall16%

“They look and feel like quality bone, and are very nice to handle”

Ease Of Use12%

“easy to read”

Advertised Vs Actual Product11%

“These are as advertised”

Weight Light7%

“lightweight”

Value For Money6%

“well worth the price”

Color5%

“the color is perfect”

Size-Overall4%

“Good size”

Design-Overall3%

“Nice design with information”

Minerals3%

“Really nice set of stones”

Soft Feel3%

“Smooth and easy to handle”

What buyers complain about

Quality-Overall15%

“Poor quality”

Size-Overall14%

“Small”

Value For Money11%

“do NOT buy this - it's super cheap”

Advertised Vs Actual Product7%

“did not appear as shown on Amazon photo”

Thickness7%

“Thin though, very thin”

Print Quality6%

“poor grammar make it hard to read”

Weight Heavy3%

“Feel heavier”

Ease Of Use3%

“Difficult to Keep Flat”

Color3%

“each is a different color is just odd”

Instructions/User Manual/Troubleshooting2%

“My instructions were stapled with the pages in the wrong order”

Top return reasons

Size-Overall37%
Advertised Vs Actual Product15%
Quality-Overall12%
Ease Of Use4%
Defective Material/Parts4%
Color4%
Print Quality3%
Thin3%
Material Quality3%
Instructions/User Manual/Troubleshooting3%