diamond
Skip itA small market ($28K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible£34.64avg listing price — sweet spot $15–$100
Returns
Great1.3%return rate — above 5% kills the launch gate
Review moat
Great356avg incumbent reviews — the moat a new listing must climb
Brand share
Good67%top-5 brand share — brands hold most of the demand
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Price range
Okay£3.72–£178.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Growth
Bad-10.5%90-day search growth — must beat 0% to launch
Conversion
Bad0.9%search→purchase rate — share of searches ending in a sale
Market size
Bad£28K£28K/yr · 91K searches
According to Flapen's Amazon United Kingdom niche tracking, diamond is a £28K/yr Amazon United Kingdom market (91K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Dec. Verdict: Skip it — 42/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
diamond market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- £35K–£43K
- units × avg price
- Conversion rate
- 0.9%
- Avg BSR
- #2,992
- Page quality
- 0%
- Prime
- 94%
- Sponsored
- 94%
- Out of stock
- 7.0%
- Avg brand age
- 34 months
- Avg seller age
- 179 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
15 falling
Sellers
18
Top-5 brand share
67%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
28%
- MomentWish26%
- HERZWILD18%
- Ecripe9%
- GZGXKJ8%
- XWCHASA6%
- CANVALITE5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -10.5% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.4×
Top diamond search terms
- diamond45K/yr
- diamonds25K/yr
- dimond6K/yr
- diamon5K/yr
- real diamond4K/yr
- fake diamonds4K/yr
- dimonds3K/yr
Top diamond 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 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
MomentWish Womens Necklaces Heart 1 Carat Moissanite Necklace For Women Pendant Silver 925 Wife Mum Birthday Anniversary Jewellery Gifts
MomentWish£82.144.5★457 rev
HERZWILD Decorative Diamond Crystals Approx. 1100 Pieces Colourless Sparkling Diamond Crystals Confetti Decorative Stones Crystals Diamonds (10 mm)
HERZWILD£6.494.5★137 rev
Ecripe Moissanite Round Cut D Color VVS1 Created Diamond Earrings 925 Sterling Silver Stud Earrings Hypoallergenic Brilliant Round Cut Earring Moissanite Jewelry 3-7MM (7mm/1.25ct)
Ecripe£27.794.4★14 rev
GZGZKJ 10Pcs Bright Crystals Diamonds Gemstones Wedding Crystal Diamond Paperweight Jewels Wedding Decorations Christmas Centerpieces Home Decor (Clear)
GZGXKJ£4.804.4★176 rev
10Pcs 40mm Big Size Kids Diamond Gemstones Acrylic Diamond Gems Large Jewels Large Pirate Treasure Chest Hunt Toy Children Gemstones Crystals for Pirate Treasure Hunt Diving Teaching (No Chest)
XWCHASA£5.773.8★103 rev
Newest
by launch dateEcripe Moissanite Round Cut D Color VVS1 Created Diamond Earrings 925 Sterling Silver Stud Earrings Hypoallergenic Brilliant Round Cut Earring Moissanite Jewelry 3-7MM (7mm/1.25ct)
Ecripe£27.7914 rev
ONLYDIAMONDS Diamond Studs in 18K White Gold 0.20-1.00cttw Womens Earrings Mens Sparkling Earrings Solitaire for her/him Real Diamond Jewellery Luxury with Gift Box (0.20CTW)
Only Diamonds London£178.7511 rev
JTC LTD Lab-Grown Round Cut Diamond Stud Earrings for Women 0.10Ct to 2.00Ct 4-Claw Setting Handcrafted in UK 9K Gold (White Yellow Rose) Hallmarked Push Back (9K White Gold 0.25Carat)
JTC LTD£126.150 rev
Canvalite 2784PCS Rhinestones with 5Pcs 3ml B7000 rhinestone glue 6 Sizes Flat Back Gems Crystal AB Nail Art Gems with Pick Up Tweezers and Rhinestone Picker Dotting Pen Tools for Nails Face Craft
CANVALITE£7.231,913 rev
HALUKAKAH 18K Real Gold Plated Pendant Necklace Set for Men - Over 1000 Diamonds - Cuban Link Chain - Clustered Diamonds Crown King Letter Pendant - Hip Hop Style - Complete with Giftbox
HALUKAKAH£19.5512 rev
Trending
90-day click momentumEcripe Moissanite Round Cut D Color VVS1 Created Diamond Earrings 925 Sterling Silver Stud Earrings Hypoallergenic Brilliant Round Cut Earring Moissanite Jewelry 3-7MM (7mm/1.25ct)
Ecripe£27.794.4★
HERZWILD Decorative Diamond Crystals Approx. 1100 Pieces Colourless Sparkling Diamond Crystals Confetti Decorative Stones Crystals Diamonds (10 mm)
HERZWILD£6.494.5★
HALUKAKAH 18K Real Gold Plated Pendant Necklace Set for Men - Over 1000 Diamonds - Cuban Link Chain - Clustered Diamonds Crown King Letter Pendant - Hip Hop Style - Complete with Giftbox
HALUKAKAH£19.555.0★
JTC LTD Lab-Grown Round Cut Diamond Stud Earrings for Women 0.10Ct to 2.00Ct 4-Claw Setting Handcrafted in UK 9K Gold (White Yellow Rose) Hallmarked Push Back (9K White Gold 0.25Carat)
JTC LTD£126.150.0★
ONLYDIAMONDS Diamond Studs in 18K White Gold 0.20-1.00cttw Womens Earrings Mens Sparkling Earrings Solitaire for her/him Real Diamond Jewellery Luxury with Gift Box (0.20CTW)
Only Diamonds London£178.753.6★
What buyers say about diamond
What buyers praise and complain about, mined from review topics.What buyers love
“Good value for money”
“Sparkly and nice to look at”
“Just the size I needed”
“I am very happy with the quality”
“Nice looking very chic”
“so this fitted the bill as a gift for the other one”
“I can definitely see the 925 stamp on them so they are certified silver”
“They are Moissanite a man made 'diamond' they look brilliant”
“The colours are bright and vibrant, and theyre a great size for little hands”
“Theyre sturdy and look much more expensive than they are”
What buyers complain about
“The glue is all dried up”
“Not the best”
“sadly slightly too big to fit in the box”
“despite cutting the tops off to try to get some out it's just a thick mess”
“The material used for the pen part crumbled”
“broke within seconds”
“Not as advertised”
“Not the same picture never shine”
“so they are more expensive than crystal or cz”
Top return reasons
Common questions
- Is diamond profitable to sell on Amazon United Kingdom?
- The niche generates £28K/yr across 16 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -10.5%. Flapen's verdict: Skip it (42/100).
- How competitive is the diamond niche?
- 15 brands and 18 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 67% of demand.
- What do buyers complain about in diamond?
- Top complaints mined from reviews: Adhesion/Stickiness, Quality-Overall, Size-Overall. The return rate is 1.3%.
- When does demand for diamond peak?
- Demand peaks in Dec; the busiest month runs 1.4× the quietest.
- What does it cost to enter the diamond niche?
- Listings span £3.72–£178.75; the average listing price is £34.64 (sweet spot $15–$100). The average incumbent carries 356 reviews — the moat a new listing must climb.