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Round|Natural|GIA

1.02ct J SI2 Round Natural Diamond

VG • J/SI2 • GIA 2257010496

Certificate GIA 2257010496

Diamond specifications and retailer prices

From £2,227 GBP
As of November 6, 2026
Save £991 GBP (31%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,826 GBP at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2257010496. Listed at 12 retailers as of November 5, 2026, with a 44% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.02
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2257010496
Dimensions6.37 × 6.31 × 4.03 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.37 mm6.31 mm1.02 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2257010496
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 63.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,651 GBP|Low: £2,227 GBP|High: £4,688 GBP|Avg: £2,911 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£2,227 GBP
Retailer 5£2,285 GBP
Retailer 7£2,378 GBP
Retailer 8£2,510 GBP
Retailer 1£2,651 GBP
Retailer 2£2,832 GBP
Retailer 9£3,138 GBP
Retailer 3£3,219 GBP
Retailer 4£4,621 GBP

32 data points across 9 retailers

12 retailers£2,227 GBP to £3,219 GBP

B
Cheapest Retailer
-
£2,227 GBP
Retailer 2
-
£2,285 GBP
View
Price last confirmed 16 days ago
B
Retailer 3
-
£2,378 GBP
View
Retailer 4
-
£2,510 GBP
View
Price last confirmed 39 days ago
B
Retailer 5
-
£2,518 GBP
View
B
Retailer 6
-
£2,651 GBP
View
B
Retailer 7
-
£2,832 GBP
View
Retailer 8
-
£2,896 GBP
View
Price last confirmed 38 days ago
Retailer 9
-
£3,138 GBP
View
Price last confirmed 14 days ago
B
Retailer 10
-
£3,219 GBP
View
Retailer 11
-
£4,621 GBP
View
Price under review
Most Expensive
NZ Jewellers
b803a2a5-8a5e-4603-820e-968fc1fdebf5 · Sep 28
£4,826 GBP
$6,496 USD
View
Price under review
11 more retailers have this diamond
Prices start from £2,227 GBPSave up to £991 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.02ct Round
£2,227 GBP