black onyx necklace
Skip itA small market ($56K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$38.48avg listing price — sweet spot $15–$100
Price range
Great$8.11–$111.45cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Brand share
Okay75%top-5 brand share — brands hold most of the demand
Review moat
Okay2,127.04avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay3.9%return rate — above 5% kills the launch gate
Growth
Bad-6.8%90-day search growth — must beat 0% to launch
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Market size
Bad$56K$56K/yr · 115K searches
According to Flapen's Amazon United States niche tracking, black onyx necklace is a $56K/yr Amazon United States market (115K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Dec. Verdict: Skip it — 42/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
black onyx necklace market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $58K–$77K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #3,760
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 80%
- Out of stock
- 12.5%
- Avg brand age
- 44 months
- Avg seller age
- 160 days
Competition & brand share
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.Brands
22 rising
Sellers
50
Top-5 brand share
75%
Top 20: 99%
Top-5 click share
41%
Top 20: 77%
Open market
21%
- Kendra Scott36%
- GAVU16%
- Phyonio9%
- SAMYA9%
- HPQQ5%
- Humble Chic NY3%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -6.8% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 2.6×
Top black onyx necklace search terms
- onyx necklace for women21K/yr
- onyx pendant12K/yr
- black onyx necklace for women16K/yr
- black kendra scott necklace11K/yr
- black onyx pendant10K/yr
- onyx necklace for men7K/yr
- kendra scott black necklace9K/yr
- black onyx necklace for men7K/yr
- kendra scott necklace black8K/yr
- kendra scott black7K/yr
Top black onyx necklace 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kendra Scott Womens Emery Beaded Strand Necklace Gold Black Agate One Size
Kendra Scott$59.154.7★21 rev
Phyonio Black Onyx Necklace for Men 14K Gold Plated Pendant Necklaces Mens Womens Stainless Steel Square Necklace with 18+2 Inch Box Chain
Phyonio$19.294.6★216 rev
Kendra Scott Elisa Pendant Necklace for Women Fashion Jewelry 14k Gold-Plated Black
Kendra Scott$45.444.6★23,786 rev
SAMYA Charm Necklace for Women Natural Black Onyx Beaded Necklace for Women Minimalist Beaded Charm Necklace with Stainless Steel Gold-Plated Oval Clasp 18 Length
SAMYA$23.264.2★31 rev
HPQQ Black Onyx Necklace for Women Sterling Silver Black Stone Jewelry
HPQQ$52.905.0★7 rev
Newest
by launch dateSAMYA Charm Necklace for Women Natural Black Onyx Beaded Necklace for Women Minimalist Beaded Charm Necklace with Stainless Steel Gold-Plated Oval Clasp 18 Length
SAMYA$23.2631 rev
GAVU Stainless Steel Dog Tag Necklace for Men Black Onyx Crystal Necklace for Men 24
GAVU$26.5010 rev
Kendra Scott Womens Emery Beaded Strand Necklace Gold Black Agate One Size
Kendra Scott$59.1521 rev
GAVU 12mm Black Onyx Chunky Necklace for Women Gemstone Black Beaded Necklace for Women Crystal Choker Statement Jewelry 18
GAVU$24.9450 rev
GAVU Mens Black Onyx Crystal Beaded Necklace 24 Length
GAVU$23.7020 rev
Trending
90-day click momentum
GAVU Mens Crystal Necklace Tiger Eye Necklace Black Onyx Necklace for Men Beaded Necklace for Men 26
GAVU$22.424.6★
GAVU Mens Black Onyx Crystal Beaded Necklace 24 Length
GAVU$23.704.2★
GAVU 12mm Black Onyx Chunky Necklace for Women Gemstone Black Beaded Necklace for Women Crystal Choker Statement Jewelry 18
GAVU$24.944.1★
GAVU 8mm Matte Onyx Necklace for Men Hand-knotted Mens Crystal Necklace 20
GAVU$22.194.3★
SAMYA Charm Necklace for Women Natural Black Onyx Beaded Necklace for Women Minimalist Beaded Charm Necklace with Stainless Steel Gold-Plated Oval Clasp 18 Length
SAMYA$23.264.2★
What buyers say about black onyx necklace
What buyers praise and complain about, mined from review topics.What buyers love
“good quality jewelry”
“it looks beautiful on”
“Worth it”
“Great fit”
“Love this Ive bought one in a bunch of colors”
“the reviews were great about the chain for this pendant”
“it looks beautiful on”
“As described”
“This with some earring was a perfect birthday gift for my friend”
“Seems to be durable as she has worn it every day since receiving it”
What buyers complain about
“chain broken”
“Broke”
“the pendant is not and change colors”
“No shine”
“Poor Quality”
“very tiny”
“Only downside id say is its a bit heavy”
“the chain is so thin”
“it is made poorly”
“Pretty necklace, false description”
Top return reasons
Common questions
- Is black onyx necklace profitable to sell on Amazon United States?
- The niche generates $56K/yr across 45 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -6.8%. Flapen's verdict: Skip it (42/100).
- How competitive is the black onyx necklace niche?
- 22 brands and 50 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 75% of demand.
- What do buyers complain about in black onyx necklace?
- Top complaints mined from reviews: Chain/Key Quality, Durability, Color. The return rate is 3.9%.
- When does demand for black onyx necklace peak?
- Demand peaks in Dec; the busiest month runs 2.6× the quietest.
- What does it cost to enter the black onyx necklace niche?
- Listings span $8.11–$111.45; the average listing price is $38.48 (sweet spot $15–$100). The average incumbent carries 2,127 reviews — the moat a new listing must climb.