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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6432628844

Certificate GIA 6432628844

Diamond specifications and retailer prices

From £2,997 GBP
$4,015 USD
As of October 30, 2026
Save £3,347 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,343 GBP at NZ Jewellers · As of October 30, 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 6432628844. Listed at 16 retailers as of October 30, 2026, with prices from £2,997 to £6,343, a £3,347 spread on the same certified stone. NZ Jewellers lists it at £6,343. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6432628844
Dimensions7.34 × 7.30 × 4.58 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6432628844
Side View
Table 56.0%CrownGirdle: MED-SLIPavilionCulet: NoneDepth 62.5%

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: Oct 30
Current: £6,343 GBP|Low: £2,997 GBP|High: £6,693 GBP|Avg: £4,205 GBP|-5.2%
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 4£2,997 GBP
Retailer 3£3,061 GBP
Retailer 5£3,171 GBP
Retailer 6£3,198 GBP
Retailer 8£3,388 GBP
Retailer 16£3,412 GBP
Retailer 13£3,435 GBP
Retailer 14£3,435 GBP
Retailer 15£3,435 GBP
Retailer 2£3,747 GBP
Retailer 12£3,965 GBP
Retailer 11£4,304 GBP
Retailer 7£4,416 GBP
Retailer 9£4,870 GBP
Retailer 10£4,922 GBP
Retailer 17£6,048 GBP
NZ Jewellers£6,343 GBP

23 data points across 17 retailers

16 retailers£2,997 GBP to £6,343 GBP

B+
Cheapest Retailer
-
£2,997 GBP
$4,015 USD
B+
Retailer 2
-
£3,061 GBP
$4,101 USD
View
B+
Retailer 3
-
£3,171 GBP
$4,249 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,198 GBP
$4,285 USD
View
B+
Retailer 5
-
£3,388 GBP
$4,540 USD
View
B+
Retailer 6
-
£3,412 GBP
$4,571 USD
View
B+
Retailer 7
-
£3,435 GBP
$4,603 USD
View
B+
Retailer 8
-
£3,435 GBP
$4,603 USD
View
B+
Retailer 9
-
£3,435 GBP
$4,603 USD
View
B+
Retailer 10
-
£3,747 GBP
View
B
Retailer 11
-
£3,965 GBP
$5,312 USD
View
B+
Retailer 12
-
£4,304 GBP
€5,492 EUR
View
Retailer 13
-
£4,416 GBP
$5,917 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
£4,922 GBP
View
B
Retailer 15
-
£6,048 GBP
View
Most Expensive
B
NZ Jewellers
03625e64-819b-4461-92f3-69210ba19a8f · Oct 30
£6,343 GBP
$8,499 USD
View
15 more retailers have this diamond
Prices start from £2,997 GBPSave up to £3,347 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
£2,997 GBP