seiryu stone
Skip itA small market ($56K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$32.55avg listing price — sweet spot $15–$100
Price range
Great$9.86–$80.36cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.9%return rate — above 6% kills the launch gate
Review moat
Great497.22avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Conversion
Okay3.6%search→purchase rate — share of searches ending in a sale
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Growth
Bad-11.1%90-day search growth — must beat 0% to launch
Market size
Bad$56K$56K/yr · 47K searches
According to Flapen's Amazon United States niche tracking, seiryu stone is a $56K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 76% of demand. Verdict: Skip it — 47/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
seiryu stone market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $49K–$65K
- units × avg price
- Launch success
- —
- 0 of 3 new (360d)
- Conversion rate
- 3.6%
- Avg BSR
- #29
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 13.9%
- Avg brand age
- 45 months
- Avg seller age
- 185 days
Competition & brand share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
13
Top-5 brand share
76%
Top 20: 100%
Top-5 click share
59%
Top 20: 100%
Open market
17%
- ChaoLeHo34%
- Unocho15%
- Generic10%
- KINGRUI8%
- Voulosimi8%
- Eorbow8%
- Open — no brand owns it (6 brands, 17%)
Demand
Weekly Amazon search volume, last 24 weeks — -11.1% search growth over the last 90 days.Top seiryu stone search terms
- seiryu stone26K/yr
- seiryu stone for aquarium18K/yr
- seiryu stones3K/yr
Top seiryu stone 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.
All 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
ChaoLeHo Aquarium Rocks Seiryu Stones Natural Hardscape Stone for Aquariums Fish Tanks Bonsai Terrariums Wargaming Dioramas Indoor or Outdoor Gardens-5lb(2-6 Inch)
ChaoLeHo$23.804.5★636 rev
Unocho Aquarium Rocks Natural Seiryu Stone 20lb Aquascaping Rocks for Fish Tank Aquarium Landscaping Decoration Paludarium Amphibian Enclosures(3-10 Inches)
Unocho$47.264.4★513 rev
KINGRUI Natural Rocks Seiryu Stone 1-2.5 Inches Decorative Stones for Fairy Gardens Miniature Landscaping Bonsai DIY Crafts Aquariums & Reptile Terrariums-1lb
KINGRUI$14.984.5★207 rev
Eorbow 12lb Seiryu Stone Aquarium Rocks for Terrariums Paludarium Vivariums Reptile Amphibian Enclosures Fish Tank Decor for Aquarium Landscaping Models
Eorbow$25.414.5★111 rev
ChaoLeHo Natural Rocks Seiryu Stones Aquariums Stones for Aquascaping Aquariums Terrariums Vivariums Decorative Stone Reptile Enclosures Paludariums and Gardens-10lb2 to 7 inch
ChaoLeHo$32.994.5★636 rev
Newest
by launch date
Korvuli Seiryu Stone Aquascaping Rocks 1 lb (2-4) Aquarium Stone Set
Korvuli$9.8616 rev
FISCAPE 2.2-8.1 Inches Natural Seiryu Stone 5 PCS Mixed Sizes Aquarium Rocks for Aquascaping Iwagumi Layouts Terrariums & Aquarium Dcor
FISCAPE$26.6854 rev
Kecilke Aquarium Rocks Seiryu Stone 2-4 Inches Natural Rocks 5lb Fish Tank Rocks for Aquariums Tank Decoration Landscaping & Amphibian Enclosures Paludariums
Kecilke$23.8622 rev
KINGRUI Natural Rocks Seiryu Stone 1-2.5 Inches Decorative Stones for Fairy Gardens Miniature Landscaping Bonsai DIY Crafts Aquariums & Reptile Terrariums-1lb
KINGRUI$14.98207 rev
VOKOY 2.5lb Natural Seiryu Stones Aquarium Rocks Decoration Aquascaping Stone Landscaping Model for Fish Tank Decor Terrariums Paludariums Reptile Enclosures Gardens 2-6 inches
VOKOY$15.06136 rev
Trending
90-day click momentumKorvuli Seiryu Stone Aquascaping Rocks 1 lb (2-4) Aquarium Stone Set
Korvuli$9.864.3★
FISCAPE 2.2-8.1 Inches Natural Seiryu Stone 5 PCS Mixed Sizes Aquarium Rocks for Aquascaping Iwagumi Layouts Terrariums & Aquarium Dcor
FISCAPE$26.684.5★
Hygger CO2 13.2LB Seiryu Rock Stone for Aquascaping 4-6 inch Natural Aquarium Landscape Stones for Aquariums Fish Tank Decor Rocks for Landscaping Paludariums & Micro Landscapes
Hygger CO2$32.414.4★
Unocho Aquarium Rocks Natural Seiryu Stone 20lb Aquascaping Rocks for Fish Tank Aquarium Landscaping Decoration Paludarium Amphibian Enclosures(3-10 Inches)
Unocho$47.264.4★
Voulosimi 44 lb Seiryu Rock Stone for Aquariums Landscaping Model Tank Decoration
Voulosimi$80.364.2★
What buyers say about seiryu stone
What buyers praise and complain about, mined from review topics.What buyers love
“The sizes are pretty decent”
“Good quality rocks”
“Look nice”
“and worth buying”
“coloring is really nice”
“Super happy with how they turned out in my setup”
“Overall exactly like advertised”
“The pieces arrived in a good size range”
“Great for decorating aquariums some are heavy so be careful”
“You will enjoy”
What buyers complain about
“one very small rock”
“Not as advertised”
“Within a day they all died from chemicals from these man-made stones”
“ITEM WAS USED BEFORE”
“There are big pieces that you might need to break apart”
“not worth it”
“Disappointingly Shaped Large Stones”
“It is dusty”
“There are big pieces that you might need to break apart”
“They do show up pretty dirty”
Top return reasons
Common questions
- Is seiryu stone profitable to sell on Amazon United States?
- The niche generates $56K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -11.1%. Flapen's verdict: Skip it (47/100).
- How competitive is the seiryu stone niche?
- 12 brands and 13 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 76% of demand.
- What do buyers complain about in seiryu stone?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Contamination. The return rate is 1.9%.
- What does it cost to enter the seiryu stone niche?
- Listings span $9.86–$80.36; the average listing price is $32.55 (sweet spot $15–$100). The average incumbent carries 497 reviews — the moat a new listing must climb.