Oval|Natural|GIA

1.50ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 3545152955

Certificate GIA 3545152955

Diamond specifications and retailer prices

From £2,942 GBP
HK$30,800 HKD
As of October 30, 2026
Save £3,478 GBP (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £6,420 GBP at NZ Jewellers · As of October 30, 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 3545152955. Listed at 25 retailers as of October 30, 2026, with prices from £2,942 to £6,420, a £3,478 spread on the same certified stone. NZ Jewellers lists it at £6,420. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.15°
Pavilion angle37.85°
OriginNatural
Grading LabGIA
CertificateGIA 3545152955
Dimensions8.67 × 6.28 × 4.08 mm
L/W Ratio1.38
Top View
8.67 mm6.28 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3545152955
Side View
Table 64.0%Crown 40.15°Girdle: THK-VTKPavilion 37.85°Culet: NoneDepth 64.9%

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: £3,501 GBP|Low: £3,019 GBP|High: £6,187 GBP|Avg: £3,978 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3£3,037 GBP
Retailer 9£3,404 GBP
Retailer 1£3,501 GBP
Retailer 10£3,543 GBP
Retailer 4£3,704 GBP
Retailer 5£3,831 GBP
Retailer 2£3,869 GBP
Retailer 7£4,337 GBP
Retailer 8£4,674 GBP
Retailer 6£6,147 GBP

26 data points across 10 retailers

25 retailers£2,942 GBP to £6,420 GBP

A
Cheapest Retailer
-
£2,942 GBP
HK$30,800 HKD
A
Retailer 2
-
£3,037 GBP
₹387,541 INR
View
B+
Retailer 3
-
£3,277 GBP
$4,391 USD
View
B+
Retailer 4
-
£3,348 GBP
$4,486 USD
View
B+
Retailer 5
-
£3,404 GBP
SGD 6,163 SGD
View
B+
Retailer 6
-
£3,501 GBP
$4,691 USD
View
B+
Retailer 7
-
£3,543 GBP
$4,747 USD
View
Final sale: no returns
B+
Retailer 8
-
£3,605 GBP
$4,830 USD
View
B+
Retailer 9
-
£3,704 GBP
View
B+
Retailer 10
-
£3,775 GBP
SGD 6,836 SGD
View
B+
Retailer 11
-
£3,831 GBP
View
B+
Retailer 12
-
£3,838 GBP
$5,143 USD
View
B+
Retailer 13
-
£3,838 GBP
$5,143 USD
View
B
Retailer 14
-
£3,838 GBP
$5,143 USD
View
Retailer 15
-
£3,869 GBP
A$7,976 AUD
View
Price last confirmed 21 days ago
B
Retailer 16
-
£3,952 GBP
$5,295 USD
View
B
Retailer 17
-
£3,973 GBP
$5,324 USD
View
B
Retailer 18
-
£4,027 GBP
$5,396 USD
View
B+
Retailer 19
-
£4,337 GBP
€5,535 EUR
View
B
Retailer 20
-
£4,429 GBP
$5,934 USD
View
B
Retailer 21
-
£4,674 GBP
ZAR 101,175 ZAR
View
B
Retailer 22
-
£5,635 GBP
$7,550 USD
View
B
Retailer 23
-
£5,793 GBP
$7,762 USD
View
B
Retailer 24
-
£6,147 GBP
View
Most Expensive
B
NZ Jewellers
59d7d7c6-3498-47e1-8c27-a3a8459836ca · Oct 30
£6,420 GBP
$8,602 USD
View
24 more retailers have this diamond
Prices start from £2,942 GBPSave up to £3,478 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
£2,942 GBP