Is calcite profitable to sell on Amazon United States?

The niche generates $120K/yr across 31 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +11.6%. Flapen's verdict: Worth a look (56/100).

How competitive is the calcite niche?

24 brands and 46 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in calcite?

Top complaints mined from reviews: Size-Overall, Value For Money, Quality-Overall. The return rate is 0.6%.

When does demand for calcite peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the calcite niche?

Listings span $5.57–$685.05; the average listing price is $67.94 (sweet spot $15–$100). The average incumbent carries 82 reviews — the moat a new listing must climb.

calcite

Worth a look

Shows low returns (0.6%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Review moat

Incredible82.48

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$67.94

avg listing price — sweet spot $15–$100

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good4.6%

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

Competition

Good52%

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

Brand share

Good72%

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

Growth

Okay+11.6%

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

Market size

Okay$120K

$120K/yr · 38K searches

Price range

Bad$5.57–$685.05

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

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, calcite is a $120K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 56/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

calcite market data

Units sold / yr: 2K–2K; avg 0–100/product
Revenue / yr: $102K–$136K; units × avg price
Conversion rate: 4.6%
Avg BSR: #2,422
Page quality: 0%
Prime: 55%
Sponsored: 68%
Out of stock: 6.2%
Avg brand age: 60 months
Avg seller age: 174 days

Competition & brand share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

Brands

24 rising

Sellers

Top-5 brand share

72%

Top 20: 97%

Top-5 click share

52%

Top 20: 90%

Open market

23%

Bartra Product25%
Generic22%
MINERALUNIVERSE11%
3M9%
Abundant Flow Water6%
FOMNKKN5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +11.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top calcite search terms

calcite15K/yr +31.1%2.0% conv.
calcite water neutralizer7K/yr +17.2%4.8% conv.
calcite crystal9K/yr -5.2%2.0% conv.
calcite for water treatment3K/yr +57.4%4.4% conv.
calcite ph water neutralizer media4K/yr -90.2%6.2% conv.

All search terms

Top calcite 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★)2 products missing review or click data not plotted

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

Top sellers

by 90-day click share

Natural Calcite Crystal from Peru - Authentic Energy Stone Specimen Formed with Several Crystals | Cluster Druse or Twin Shapes | for Collection Decoration or Gifting (2 to 3 Ounce)

Bartra Product$12.003.8★12 rev

Calcite pH Balance Mineral Media 50 lb Natural Calcium Carbonate (CaCO) Water Treatment Media for Neutralizer Tanks Commercial & Institutional Use

Generic$109.674.5★5 rev

MINERALUNIVERSE 1/2 LB Blue Calcite Rough Stones - Bulk Blue Calcite Crystal - Raw Natural Stones & Crystals - Fountain Rocks for Tumbling Polishing Wire Wrapping Reiki Chakra Crystal Healing

MINERALUNIVERSE$11.054.3★26 rev

Natural Calcite Crystal from Peru - Authentic Energy Stone Specimen Formed with Several Crystals | Cluster Druse or Twin Shapes | for Collection Decoration or Gifting (3 to 4 Ounce)

Bartra Product$15.753.8★12 rev

Aqua-Pure C-050P Calcium Carbonate Media

3M$91.834.5★118 rev

Newest

by launch date

Calcite Calcium Carbonate Filter Media for PH Correction (0.5 Cu. Ft.)

Provizio Supply$99.520 rev

1mo ago

VICAL 1000 Calcite Media 1640 Mesh NSF/ANSI 60 Certified Calcium Carbonate Neutralizer Media for Acid Neutralizer Filters & Well Water Treatment Made in USA 0.5 Cubic Foot / 50 lb

Generic$108.591 rev

3mo ago

Calcite Filter Media - Acid Neutralizer for Low pH or Acidic Condensate Water - Calcium Carbonate for Water Filtration (10lbs.)

iFiVa Filtration$42.880 rev

6mo ago

Fine Ground Limestone Powder 50 lb All-Natural Calcium Carbonate for Lawns Gardens Chicken Coops Odor Control Soil pH and Agriculture Soft White Lime Rock Dust

CountryMax$49.43121 rev

1y ago

Natural Calcite Crystal from Peru - Authentic Energy Stone Specimen Formed with Several Crystals | Cluster Druse or Twin Shapes | for Collection Decoration or Gifting (2 to 3 Ounce)

Bartra Product$12.0012 rev

1y ago

What buyers say about calcite

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

What buyers love

Quality-Overall19%

“Beautiful Piece and Beautiful Cut, Great Price, Super Fast Shipping and Excellent Service - Thank You”

Advertised Vs Actual Product12%

“This was exactly as advertised”

Value For Money11%

“Great value”

Color10%

“The colors are beautiful”

Size-Overall6%

“The sizing is correct”

Plant Growth6%

“Beneficial addition to your planting needs”

Smell5%

“Eliminated the smell”

Durability4%

“For a natural stone it feels quite durable”

Refills-Overall3%

“Worked fine, is enough for two refills”

Material Quality3%

“it's actually very fine material”

What buyers complain about

Size-Overall29%

“above the rim or valve head won't fit on”

Value For Money16%

“Cheaper available elsewhere”

Quality-Overall13%

“Not really optical quality”

Instructions/User Manual/Troubleshooting7%

“Poor instruction but”

Color5%

“ord none had any blue”

Compatibility-Overall5%

“Not compatible with my system”

Advertised Vs Actual Product3%

“What was shown online vs what was sent was completly different”

Water Resistance3%

“I can not use it in my water treatment”

Design-Overall2%

“because it's poorly designed”

Assembly/Installation2%

“A Design Flaw that caused a HUGH Installation problem”

Top return reasons

Advertised Vs Actual Product41%

Size-Overall11%

Value For Money11%

Color9%

Compatibility-Overall8%

Defective Material/Parts5%

Leak-Proof4%

Certifications2%

Water Resistance2%

Maintenance And Repair2%

Common questions

Is calcite profitable to sell on Amazon United States?: The niche generates $120K/yr across 31 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +11.6%. Flapen's verdict: Worth a look (56/100).
How competitive is the calcite niche?: 24 brands and 46 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 72% of demand.
What do buyers complain about in calcite?: Top complaints mined from reviews: Size-Overall, Value For Money, Quality-Overall. The return rate is 0.6%.
When does demand for calcite peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the calcite niche?: Listings span $5.57–$685.05; the average listing price is $67.94 (sweet spot $15–$100). The average incumbent carries 82 reviews — the moat a new listing must climb.