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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1246015618

Certificate GIA 1246015618

Diamond specifications and retailer prices

From £2,761 GBP
$3,700 USD
As of October 30, 2026
Save £4,254 GBP (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,015 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 1246015618. Listed at 17 retailers as of October 30, 2026, with prices from £2,761 to £7,015, a £4,254 spread on the same certified stone. NZ Jewellers lists it at £7,015. 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
FluorescenceStrong
Crown angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 1246015618
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.31 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246015618
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £7,015 GBP|Low: £2,761 GBP|High: £7,015 GBP|Avg: £4,210 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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 4£2,761 GBP
Retailer 5£3,314 GBP
Retailer 12£3,362 GBP
Retailer 6£3,425 GBP
Retailer 14£3,562 GBP
Retailer 15£3,633 GBP
Retailer 8£3,800 GBP
Retailer 13£3,800 GBP
Retailer 16£3,800 GBP
Retailer 3£4,003 GBP
Retailer 2£4,065 GBP
Retailer 9£4,385 GBP
Retailer 7£4,627 GBP
Retailer 17£4,735 GBP
Retailer 10£4,760 GBP
Retailer 11£6,716 GBP
NZ Jewellers£7,015 GBP

18 data points across 17 retailers

17 retailers£2,761 GBP to £7,015 GBP

A
Cheapest Retailer
-
£2,761 GBP
$3,700 USD
B+
Retailer 2
-
£3,314 GBP
$4,440 USD
View
B+
Retailer 3
-
£3,362 GBP
$4,505 USD
View
B+
Retailer 4
-
£3,425 GBP
$4,589 USD
View
B+
Retailer 5
-
£3,562 GBP
CA$6,629 CAD
View
B+
Retailer 6
-
£3,633 GBP
$4,868 USD
View
B
Retailer 7
-
£3,800 GBP
$5,091 USD
View
B
Retailer 8
-
£3,800 GBP
$5,091 USD
View
B
Retailer 9
-
£3,800 GBP
$5,091 USD
View
B
Retailer 10
-
£4,003 GBP
$5,364 USD
View
B
Retailer 11
-
£4,065 GBP
View
B
Retailer 12
-
£4,385 GBP
$5,875 USD
View
Retailer 13
-
£4,627 GBP
$6,200 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
£4,735 GBP
$6,345 USD
View
B
Retailer 15
-
£4,760 GBP
€6,074 EUR
View
B
Retailer 16
-
£6,716 GBP
View
Most Expensive
C
NZ Jewellers
539454d3-ef7b-4ddb-ab23-0a64fd815bbf · Oct 30
£7,015 GBP
$9,399 USD
View
16 more retailers have this diamond
Prices start from £2,761 GBPSave up to £4,254 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.

A
1.51ct Round
£2,761 GBP