---
title: "black diamond necklace — Niche Verdict: Skip it (41/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/black-diamond-necklace"
last_updated: "2026-07-13T20:39:31.451Z"
locale: en
meta:
  description: "a small market ($12K/yr) — black diamond necklace doesn't clear our bar today."
  "og:description": "a small market ($12K/yr) — black diamond necklace doesn't clear our bar today."
  "og:title": "black diamond necklace — Niche Verdict: Skip it (41/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **black diamond necklace**

**Skip it**

A small market ($12K/yr) — this niche doesn't clear our bar today.

Market size 3Growth 14Conversion 3Competition 77Returns 22Price range 8Avg price 91Brand share 88Review moat 60Quality gap 76

**Avg price**

**Great****$56.42**

avg listing price — sweet spot $15–$100

**Brand share**

**Great****47%**

top-5 brand share — no brand owns this niche

**Competition**

**Great****38%**

top-5 click share — an open shelf

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Good****1,083.81**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Bad****6.7%**

return rate — above 6% kills the launch gate

**Growth**

**Bad****-22.2%**

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

**Price range**

**Bad****$7.96–$1104.93**

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

**Market size**

**Bad****$12K**

$12K/yr · 76K searches

**Conversion**

**Bad****0.3%**

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

## **Competition**

Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.

**Brands**

**37 **▼falling

**Sellers**

**47**

**Top-5 brand share**

**47%**

**Open market**

**53%**

- JAKAWIN10% - Rosec Jewels10% - chaoyite8% - JUNVirtuous8% - Halukakah6% - OYOGAA6%

## **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%3%$3596%$7199%$1K12%$1K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 48 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Rosec Jewels Certified 6 Carat Lab Grown Black Diamond Statement Necklace Aaaa Quality Black White Necklace - Fine Jewelry For Women 925 Sterling Silver With Chain](https://m.media-amazon.com/images/I/41jhQFTDgAL.jpg)**Rosec Jewels Certified 6 Carat Lab Grown Black Diamond Statement Necklace Aaaa Quality Black White Necklace - Fine Jewelry For Women 925 Sterling Silver With Chain**Rosec Jewels**$113.79**4.4★3 rev](https://www.amazon.com/dp/B0F218H8BL) [2![JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women](https://m.media-amazon.com/images/I/31-AEdZ8LXL.jpg)**JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women**JAKAWIN**$13.71**4.3★1,682 rev](https://www.amazon.com/dp/B0FDG3Q3ZY) [3![chaoyite Wedding Jewelry Set for Women Bridal Floral Necklace Dangle Earrings Bracelet Set Crystal Prom Party Costume Accessories for Bride (black crystal)](https://m.media-amazon.com/images/I/41OGtM-pJrL.jpg)**chaoyite Wedding Jewelry Set for Women Bridal Floral Necklace Dangle Earrings Bracelet Set Crystal Prom Party Costume Accessories for Bride (black crystal)**chaoyite**$20.39**4.4★87 rev](https://www.amazon.com/dp/B0CSD6RB7T) [4![JUNVirtuous 2 Pieces Cuban Link Chain for Men - Diamond Necklace and Bracelet Iced Out Miami Hip Hop Jewelry (Black 8 and 18 Chain)](https://m.media-amazon.com/images/I/51prlKyl0sL.jpg)**JUNVirtuous 2 Pieces Cuban Link Chain for Men - Diamond Necklace and Bracelet Iced Out Miami Hip Hop Jewelry (Black 8 and 18 Chain)**JUNVirtuous**$16.80**4.2★380 rev](https://www.amazon.com/dp/B0CZNZCF2S) [5![Halukakah Gold Chain for Men Iced Out 14MM Rhodium Black Plated Diamond Cuban Link Chain Necklace 24 Lab Dimaonds Prong Set Gift for Him](https://m.media-amazon.com/images/I/51Kk9jwik1L.jpg)**Halukakah Gold Chain for Men Iced Out 14MM Rhodium Black Plated Diamond Cuban Link Chain Necklace 24 Lab Dimaonds Prong Set Gift for Him**Halukakah**$20.37**4.0★5,381 rev](https://www.amazon.com/dp/B0BGMSZWQH)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![DZGEESHI 3mm Black Moissanite Tennis Necklace 316L Stainless Steel With 18k Black Gold Plated Moissanite Chain for Men Husband Women Handmade Gifts Anniversary Birthday (3mm 22inch)](https://m.media-amazon.com/images/I/41IseP3+URL.jpg)**DZGEESHI 3mm Black Moissanite Tennis Necklace 316L Stainless Steel With 18k Black Gold Plated Moissanite Chain for Men Husband Women Handmade Gifts Anniversary Birthday (3mm 22inch)**DZGEESHI**$182.16**3 rev4mo ago](https://www.amazon.com/dp/B0GQ2L44MB) [![YYDSUNY 925 Sterling Silver Black Onyx Necklace for Women 14K Gold Plated Black Birthstone Choker Necklace to Daughter Mother Dainty Minimalist Black Pendant Jewelry Birthday Wedding Gifts](https://m.media-amazon.com/images/I/21OqRk+7GhL.jpg)**YYDSUNY 925 Sterling Silver Black Onyx Necklace for Women 14K Gold Plated Black Birthstone Choker Necklace to Daughter Mother Dainty Minimalist Black Pendant Jewelry Birthday Wedding Gifts**YYDSUNY**$26.04**22 rev8mo ago](https://www.amazon.com/dp/B0G1XJ95ND) [![GEMQUEEN Moissanite Earrings Studs : Solid 925 Sterling Silver Earrings for Women Men Hypoallergenic Dainty Black Moissanite Stud Earring Jewelry Gifts Trendy Brilliant Round Cut D Color VVS1 Clarity](https://m.media-amazon.com/images/I/411gHd4aSsL.jpg)**GEMQUEEN Moissanite Earrings Studs : Solid 925 Sterling Silver Earrings for Women Men Hypoallergenic Dainty Black Moissanite Stud Earring Jewelry Gifts Trendy Brilliant Round Cut D Color VVS1 Clarity**GEMQUEEN**$28.64**1,262 rev10mo ago](https://www.amazon.com/dp/B0FR1ZZ1NM) [![PINCHUAN Silver Choker Necklaces for Women Rhinestone Choker Diamond Choker Necklace Womens Silver Prom Necklace Sparkly Crystal Rhinestone Choker for Prom Party Jewelry Gift-black/LX](https://m.media-amazon.com/images/I/21sbSAcfWGL.jpg)**PINCHUAN Silver Choker Necklaces for Women Rhinestone Choker Diamond Choker Necklace Womens Silver Prom Necklace Sparkly Crystal Rhinestone Choker for Prom Party Jewelry Gift-black/LX**PINCHUAN**$8.09**52 rev10mo ago](https://www.amazon.com/dp/B0FQMWVSQF) [![JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women](https://m.media-amazon.com/images/I/31-AEdZ8LXL.jpg)**JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women**JAKAWIN**$13.71**1,682 rev1y ago](https://www.amazon.com/dp/B0FDG3Q3ZY)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![DZGEESHI 4mm Round Cut Black Moissanite Tennis Bracelet for Women Mens Moissanite Bracelet 316 Stainless Steel Cuban Chain Gifts Birthday Anniversary (4MM 7inch)](https://m.media-amazon.com/images/I/31-y6kCGVzL.jpg)**DZGEESHI 4mm Round Cut Black Moissanite Tennis Bracelet for Women Mens Moissanite Bracelet 316 Stainless Steel Cuban Chain Gifts Birthday Anniversary (4MM 7inch)**DZGEESHI**$93.82**4.4★**▲ 89%**](https://www.amazon.com/dp/B0DR26S4DN) [![Unicra Bride Crystal Necklace Earrings Set Black Jewelry Sets Rhinestone Choker Necklace Prom Costume Jewelry Set for Women and Brides (Black)](https://m.media-amazon.com/images/I/310lw2rgZgL.jpg)**Unicra Bride Crystal Necklace Earrings Set Black Jewelry Sets Rhinestone Choker Necklace Prom Costume Jewelry Set for Women and Brides (Black)**Unicra**$11.88**4.4★**▲ 88%**](https://www.amazon.com/dp/B0GJBJ513V) [![SAVEARTH DIAMONDS Round Cut Lab Created Black Moissanite 5MM Width Tennis Chain Necklace For Men Women In 14K Black Rhodium Plated 925 Sterling Silver (VVS1 Clarity 40.15 CT) Length - 20](https://m.media-amazon.com/images/I/317vQUYbr3L.jpg)**SAVEARTH DIAMONDS Round Cut Lab Created Black Moissanite 5MM Width Tennis Chain Necklace For Men Women In 14K Black Rhodium Plated 925 Sterling Silver (VVS1 Clarity 40.15 CT) Length - 20**SAVEARTH DIAMONDS**$1104.93**3.4★**▲ 88%**](https://www.amazon.com/dp/B0DP2SZL1V) [![DZGEESHI 3mm Black Moissanite Tennis Necklace 316L Stainless Steel With 18k Black Gold Plated Moissanite Chain for Men Husband Women Handmade Gifts Anniversary Birthday (3mm 22inch)](https://m.media-amazon.com/images/I/41IseP3+URL.jpg)**DZGEESHI 3mm Black Moissanite Tennis Necklace 316L Stainless Steel With 18k Black Gold Plated Moissanite Chain for Men Husband Women Handmade Gifts Anniversary Birthday (3mm 22inch)**DZGEESHI**$182.16**5.0★**▲ 87%**](https://www.amazon.com/dp/B0GQ2L44MB) [![JUNVirtuous 2 Pieces Cuban Link Chain and Bracelet - Iced Out Miami Cuban Hip Hop Jewelry (Black 8 and 20 Chain)](https://m.media-amazon.com/images/I/51prlKyl0sL.jpg)**JUNVirtuous 2 Pieces Cuban Link Chain and Bracelet - Iced Out Miami Cuban Hip Hop Jewelry (Black 8 and 20 Chain)**JUNVirtuous**$17.78**4.2★**▲ 85%**](https://www.amazon.com/dp/B0CZP2CHSD)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -22.2% search growth over the last 90 days.

4K3KPrime Day '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 3.3×

## **Reviews**

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

### **What buyers love **

**Value For Money**15%

*“Good deal”*

**Size-Overall**10%

*“fits great for her”*

**Shape/Style**9%

*“Elegant costume jewelry”*

**Design-Overall**7%

*“ELEGANT”*

**Quality-Overall**7%

*“Overall, its a really pretty piece of jewelry and definitely worth considering if you want something elegant and not over the top — especially if youre buying it as a gift because it clearly made a good impression”*

**Chain/Key Quality**6%

*“The chain length is good”*

**Brightness/Shine/Glow**5%

*“Sparkly”*

**Advertised Vs Actual Product**5%

*“Just as described”*

**Weight Light**4%

*“Its light and you barely even notice youre wearing it”*

**Color**3%

*“Pretty”*

### **What buyers complain about **

**Quality-Overall**21%

*“Low Quality”*

**Durability**16%

*“Broke”*

**Size-Overall**12%

*“The chain is a little short for my liking”*

**Strength**8%

*“Sad because it was pretty just not sturdy”*

**Value For Money**5%

*“way overpriced for the crummy quality”*

**Precious Gemstone**5%

*“Wore during my wedding and loved them, however a gem did fall off”*

**Fastener Quality**2%

*“The clasp is not my favorite”*

**Ease Of Use**2%

*“A bit hard to put on”*

**Water Resistance**2%

*“Only thing that irritated me was the rain got stuck to everything”*

**Color**1%

*“However, it was the wrong color and defective”*

### **Top return reasons **

**Size-Overall**35%

**Quality-Overall**11%

**Advertised Vs Actual Product**9%

**Color**6%

**Neck Fit**5%

**Chain/Key Quality**5%

**Metal Authenticity**4%

**Defective Material/Parts**3%

**Functionality-Overall**2%

**Durability**2%