CaratHunter
Plans
Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6502356237

Certificate GIA 6502356237

Diamond specifications and retailer prices

From £3,543 GBP
$4,754 USD
As of November 1, 2026
Save £3,956 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,499 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6502356237. Listed at 16 retailers as of November 1, 2026, with prices from £3,543 to £7,499, a £3,956 spread on the same certified stone. NZ Jewellers lists it at £7,499. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6502356237
Dimensions7.32 × 7.28 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.32 mm7.28 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6502356237
Side View
Table 58.0%Crown 36°Girdle: ThickPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,499 GBP|Low: £3,543 GBP|High: £7,499 GBP|Avg: £4,873 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 11£3,543 GBP
Retailer 9£3,577 GBP
Retailer 10£3,781 GBP
Retailer 4£4,062 GBP
Retailer 13£4,062 GBP
Retailer 14£4,062 GBP
Retailer 8£4,345 GBP
Retailer 3£4,687 GBP
Retailer 2£4,877 GBP
Retailer 5£4,945 GBP
Retailer 6£5,345 GBP
Retailer 12£5,872 GBP
Retailer 7£6,606 GBP
NZ Jewellers£7,499 GBP

40 data points across 14 retailers

16 retailers£3,543 GBP to £7,499 GBP

B+
Cheapest Retailer
-
£3,543 GBP
$4,754 USD
B+
Retailer 2
-
£3,577 GBP
$4,800 USD
View
B+
Retailer 3
-
£3,781 GBP
$5,074 USD
View
B
Retailer 4
-
£4,062 GBP
$5,451 USD
View
B
Retailer 5
-
£4,062 GBP
$5,451 USD
View
B
Retailer 6
-
£4,062 GBP
$5,451 USD
View
B+
Retailer 7
-
£4,345 GBP
View
B
Retailer 8
-
£4,538 GBP
$6,090 USD
View
B
Retailer 9
-
£4,538 GBP
$6,090 USD
View
B
Retailer 10
-
£4,687 GBP
$6,290 USD
View
B
Retailer 11
-
£4,687 GBP
$6,290 USD
View
B
Retailer 12
-
£4,877 GBP
€6,233 EUR
View
Retailer 13
-
£4,945 GBP
$6,636 USD
View
Price last confirmed 10 days ago
Retailer 14
-
£5,872 GBP
View
Price last confirmed 33 days ago
B
Retailer 15
-
£6,606 GBP
View
Most Expensive
B
NZ Jewellers
8f2ff27a-77b1-4959-9a1b-fd8fa3d5c856 · Nov 2
£7,499 GBP
$10,063 USD
View
15 more retailers have this diamond
Prices start from £3,543 GBPSave up to £3,956 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+
1.51ct Round
£3,543 GBP