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1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1415840386

Certificate GIA 1415840386

Diamond specifications and retailer prices

From £4,146 GBP
$5,555 USD
As of October 30, 2026
Save £4,882 GBP (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £9,028 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 1415840386. Listed at 19 retailers as of October 30, 2026, with prices from £4,146 to £9,028, a £4,882 spread on the same certified stone. NZ Jewellers lists it at £9,028. 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
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1415840386
Dimensions7.35 × 7.34 × 4.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.35 mm7.34 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1415840386
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £9,028 GBP|Low: £4,067 GBP|High: £9,379 GBP|Avg: £5,636 GBP|-3.7%
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 30, 2026
Retailer 12£4,097 GBP
Retailer 16£4,146 GBP
Retailer 4£4,265 GBP
Retailer 5£4,514 GBP
Retailer 14£4,515 GBP
Retailer 17£4,815 GBP
Retailer 8£4,891 GBP
Retailer 15£4,966 GBP
Retailer 10£5,142 GBP
Retailer 6£5,366 GBP
Retailer 13£5,366 GBP
Retailer 7£5,545 GBP
Retailer 2£5,594 GBP
Retailer 9£5,643 GBP
Retailer 3£5,949 GBP
Retailer 11£7,564 GBP
NZ Jewellers£9,028 GBP

40 data points across 17 retailers

19 retailers£4,146 GBP to £9,028 GBP

Retailer 1
-
£4,097 GBP
$5,490 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
£4,146 GBP
$5,555 USD
View
B+
Retailer 3
-
£4,265 GBP
$5,714 USD
View
B
Retailer 4
-
£4,429 GBP
A$9,131 AUD
View
Retailer 5
-
£4,473 GBP
$5,993 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
£4,514 GBP
$6,048 USD
View
Final sale: no returns
B
Retailer 7
-
£4,515 GBP
$6,049 USD
View
B
Retailer 8
-
£4,815 GBP
$6,451 USD
View
B
Retailer 9
-
£4,891 GBP
$6,553 USD
View
B
Retailer 10
-
£4,966 GBP
$6,654 USD
View
B
Retailer 11
-
£5,142 GBP
View
B
Retailer 12
-
£5,366 GBP
$7,190 USD
View
B
Retailer 13
-
£5,366 GBP
$7,190 USD
View
B
Retailer 14
-
£5,545 GBP
$7,430 USD
View
B
Retailer 15
-
£5,594 GBP
€7,138 EUR
View
B
Retailer 16
-
£5,643 GBP
$7,561 USD
View
Retailer 17
-
£5,949 GBP
$7,971 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
£7,564 GBP
View
Most Expensive
B
NZ Jewellers
a0390c18-3dae-4db9-8e16-bdab1875caac · Oct 30
£9,028 GBP
$12,097 USD
View
18 more retailers have this diamond
Prices start from £4,146 GBPSave up to £4,882 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
£4,146 GBP