black diamond necklace
Skip itA small market ($12K/yr) — this niche doesn't clear our bar today.
Avg price
Great$56.42avg listing price — sweet spot $15–$100
Brand share
Great47%top-5 brand share — no brand owns this niche
Competition
Great38%top-5 click share — an open shelf
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Review moat
Good1,083.81avg incumbent reviews — the moat a new listing must climb
Returns
Bad6.7%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–$1104.93cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad$12K$12K/yr · 76K searches
Conversion
Bad0.3%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.
All 48 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$113.794.4★3 rev
JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women
JAKAWIN$13.714.3★1,682 rev
chaoyite Wedding Jewelry Set for Women Bridal Floral Necklace Dangle Earrings Bracelet Set Crystal Prom Party Costume Accessories for Bride (black crystal)
chaoyite$20.394.4★87 rev
JUNVirtuous 2 Pieces Cuban Link Chain for Men - Diamond Necklace and Bracelet Iced Out Miami Hip Hop Jewelry (Black 8 and 18 Chain)
JUNVirtuous$16.804.2★380 rev
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$20.374.0★5,381 rev
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)
DZGEESHI$182.163 rev
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$26.0422 rev
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$28.641,262 rev
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$8.0952 rev
JAKAWIN Silver Rhinestone Jewelry Set Wedding Necklace Earrings for Women
JAKAWIN$13.711,682 rev
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)
DZGEESHI$93.824.4★
Unicra Bride Crystal Necklace Earrings Set Black Jewelry Sets Rhinestone Choker Necklace Prom Costume Jewelry Set for Women and Brides (Black)
Unicra$11.884.4★
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$1104.933.4★
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$182.165.0★
JUNVirtuous 2 Pieces Cuban Link Chain and Bracelet - Iced Out Miami Cuban Hip Hop Jewelry (Black 8 and 20 Chain)
JUNVirtuous$17.784.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -22.2% search growth over the last 90 days.Peak months: Nov, Dec · busiest ÷ quietest = 3.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Good deal”
“fits great for her”
“Elegant costume jewelry”
“ELEGANT”
“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”
“The chain length is good”
“Sparkly”
“Just as described”
“Its light and you barely even notice youre wearing it”
“Pretty”
What buyers complain about
“Low Quality”
“Broke”
“The chain is a little short for my liking”
“Sad because it was pretty just not sturdy”
“way overpriced for the crummy quality”
“Wore during my wedding and loved them, however a gem did fall off”
“The clasp is not my favorite”
“A bit hard to put on”
“Only thing that irritated me was the rain got stuck to everything”
“However, it was the wrong color and defective”