---
title: "Calcite — $120K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/calcite"
last_updated: "2026-08-10T13:14:33.403Z"
locale: en
meta:
description: "Niche score 56/100 · $120K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $120K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Calcite — $120K/yr Amazon US Niche (2026) - Flapen"
---
# **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.
Market size 28Growth 40Conversion 55Competition 55Returns 97Price range 13Avg price 87Brand share 55Review moat 96Quality gap 70
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Review moat**
**Incredible****82.48**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$67.94**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****4.6%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Good****72%**
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**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
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 ~~](https://flapen.com/research/methodology)
## **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**
**46**
**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.
900700Holiday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/calcite/trend)
## **Top calcite search terms**
- **calcite**15K/yr+31.1%2.0% conv. - **calcite water neutralizer**7K/yr+17.2%4.8% conv. - **calcite crystal**9K/yr-5.2%2.0% conv. - **calcite for water treatment**3K/yr+57.4%4.4% conv. - **calcite ph water neutralizer media**4K/yr-90.2%6.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/calcite/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.
0%4%$5K8%$10K12%$14K16%$19K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**$12.00**3.8★12 rev](https://www.amazon.com/dp/B0DPDXF8Y4) [2**Calcite pH Balance Mineral Media 50 lb Natural Calcium Carbonate (CaCO) Water Treatment Media for Neutralizer Tanks Commercial & Institutional Use**Generic**$109.67**4.5★5 rev](https://www.amazon.com/dp/B0CXM279HV) [3**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**$11.05**4.3★26 rev](https://www.amazon.com/dp/B0997ZZZQ7) [4**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**$15.75**3.8★12 rev](https://www.amazon.com/dp/B0DPDWYMX8) [5**Aqua-Pure C-050P Calcium Carbonate Media**3M**$91.83**4.5★118 rev](https://www.amazon.com/dp/B018S3TTSE)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Calcite Calcium Carbonate Filter Media for PH Correction (0.5 Cu. Ft.)**Provizio Supply**$99.52**0 rev1mo ago](https://www.amazon.com/dp/B0H1NWXTMV) [**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**$108.59**1 rev3mo ago](https://www.amazon.com/dp/B0GSRFKRD8) [**Calcite Filter Media - Acid Neutralizer for Low pH or Acidic Condensate Water - Calcium Carbonate for Water Filtration (10lbs.)**iFiVa Filtration**$42.88**0 rev6mo ago](https://www.amazon.com/dp/B0GDSV6KG7) [**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**$49.43**121 rev1y ago](https://www.amazon.com/dp/B0FDR8Q6DY) [**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**$12.00**12 rev1y ago](https://www.amazon.com/dp/B0DPDXF8Y4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Calcite Calcium Carbonate Filter Media for PH Correction (0.5 Cu. Ft.)**Provizio Supply**$99.52**0.0★**▲ 202%**](https://www.amazon.com/dp/B0H1NWXTMV) [**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**$49.43**4.8★**▲ 197%**](https://www.amazon.com/dp/B0FDR8Q6DY) [**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**$108.59**4.0★**▲ 177%**](https://www.amazon.com/dp/B0GSRFKRD8) [**Calcite Media (Calcium Carbonate Mineral) pH Correction Media 50 lbs**IPW Industries Inc**$100.72**4.6★**▲ 175%**](https://www.amazon.com/dp/B00KYPUGWS) [**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**$12.00**3.8★**▲ 169%**](https://www.amazon.com/dp/B0DPDXF8Y4)
**~~View all trending →~~**
## **What buyers say about calcite**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Beautiful Piece and Beautiful Cut, Great Price, Super Fast Shipping and Excellent Service - Thank You”*
**Advertised Vs Actual Product**12%
*“This was exactly as advertised”*
**Value For Money**11%
*“Great value”*
**Color**10%
*“The colors are beautiful”*
**Size-Overall**6%
*“The sizing is correct”*
**Plant Growth**6%
*“Beneficial addition to your planting needs”*
**Smell**5%
*“Eliminated the smell”*
**Durability**4%
*“For a natural stone it feels quite durable”*
**Refills-Overall**3%
*“Worked fine, is enough for two refills”*
**Material Quality**3%
*“it's actually very fine material”*
### **What buyers complain about **
**Size-Overall**29%
*“above the rim or valve head won't fit on”*
**Value For Money**16%
*“Cheaper available elsewhere”*
**Quality-Overall**13%
*“Not really optical quality”*
**Instructions/User Manual/Troubleshooting**7%
*“Poor instruction but”*
**Color**5%
*“ord none had any blue”*
**Compatibility-Overall**5%
*“Not compatible with my system”*
**Advertised Vs Actual Product**3%
*“What was shown online vs what was sent was completly different”*
**Water Resistance**3%
*“I can not use it in my water treatment”*
**Design-Overall**2%
*“because it's poorly designed”*
**Assembly/Installation**2%
*“A Design Flaw that caused a HUGH Installation problem”*
### **Top return reasons **
**Advertised Vs Actual Product**41%
**Size-Overall**11%
**Value For Money**11%
**Color**9%
**Compatibility-Overall**8%
**Defective Material/Parts**5%
**Leak-Proof**4%
**Certifications**2%
**Water Resistance**2%
**Maintenance And Repair**2%
## **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.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)