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Oval|Natural|GIA

1.50ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 1559595774

Certificate GIA 1559595774

Diamond specifications and retailer prices

From £2,608 GBP
HK$27,300 HKD
As of November 1, 2026
Save £3,468 GBP (57%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £6,144 GBP at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559595774. Listed at 26 retailers as of October 30, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559595774
Dimensions8.73 × 6.41 × 4.07 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud, Needle, Indented Natural
Top View
8.73 mm6.41 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559595774
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: Nov 1
Current: £6,076 GBP|Low: £2,589 GBP|High: £6,144 GBP|Avg: £3,729 GBP|-1.1%
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
Retailer 18
November 1, 2026
Retailer 16£2,608 GBP
Retailer 11£2,788 GBP
Retailer 2£3,112 GBP
Retailer 6£3,219 GBP
Retailer 17£3,295 GBP
Retailer 8£3,323 GBP
Retailer 12£3,356 GBP
Retailer 14£3,468 GBP
Retailer 5£3,488 GBP
Retailer 9£3,488 GBP
Retailer 10£3,488 GBP
Retailer 3£3,600 GBP
Retailer 4£3,693 GBP
Retailer 18£3,947 GBP
Retailer 7£4,024 GBP
Retailer 15£4,287 GBP
Retailer 13£5,555 GBP
NZ Jewellers£6,076 GBP

19 data points across 18 retailers

26 retailers£2,608 GBP to £6,076 GBP

A
Cheapest Retailer
-
£2,608 GBP
HK$27,300 HKD
A
Retailer 2
-
£2,788 GBP
₹355,726 INR
View
B+
Retailer 3
-
£3,108 GBP
SGD 5,628 SGD
View
B+
Retailer 4
-
£3,112 GBP
$4,170 USD
View
B+
Retailer 5
-
£3,219 GBP
$4,313 USD
View
Final sale: no returns
B+
Retailer 6
-
£3,232 GBP
$4,330 USD
View
B+
Retailer 7
-
£3,295 GBP
$4,415 USD
View
B+
Retailer 8
-
£3,323 GBP
SGD 6,016 SGD
View
B+
Retailer 9
-
£3,356 GBP
View
B+
Retailer 10
-
£3,419 GBP
A$7,048 AUD
View
B+
Retailer 11
-
£3,468 GBP
View
B+
Retailer 12
-
£3,488 GBP
$4,673 USD
View
B+
Retailer 13
-
£3,488 GBP
$4,673 USD
View
B+
Retailer 14
-
£3,488 GBP
$4,673 USD
View
Retailer 15
-
£3,526 GBP
$4,725 USD
View
Price last confirmed 16 days ago
Retailer 16
-
£3,526 GBP
$4,725 USD
View
Price last confirmed 14 days ago
Retailer 17
-
£3,576 GBP
A$7,371 AUD
View
Price last confirmed 22 days ago
B+
Retailer 18
-
£3,600 GBP
$4,823 USD
View
B+
Retailer 19
-
£3,693 GBP
$4,948 USD
View
B+
Retailer 20
-
£3,947 GBP
€5,037 EUR
View
B
Retailer 21
-
£4,024 GBP
$5,392 USD
View
Retailer 22
-
£4,069 GBP
$5,452 USD
View
Price last confirmed 13 days ago
B+
Retailer 23
-
£4,287 GBP
ZAR 92,795 ZAR
View
B
Retailer 24
-
£5,555 GBP
View
B
Retailer 25
-
£6,076 GBP
$8,141 USD
View
Most Expensive
NZ Jewellers
abfc4749-cf77-454f-ace3-06e3f92758c4 · Oct 17
£6,144 GBP
$8,232 USD
View
Price last confirmed 15 days ago
25 more retailers have this diamond
Prices start from £2,608 GBPSave up to £3,468 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
1.50ct Oval
£2,608 GBP