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Oval|Natural|GIA

1.51ct E SI2 Oval Natural Diamond

ID • E/SI2 • GIA 6541240788

Certificate GIA 6541240788

Diamond specifications and retailer prices

From £3,710 GBP
HK$38,600 HKD
As of October 29, 2026
Save £3,755 GBP (50%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £8,252 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541240788. Listed at 20 retailers as of October 26, 2026, with a 101% 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

1.51
Carat
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.35°
Pavilion angle36.93°
OriginNatural
Grading LabGIA
CertificateGIA 6541240788
Dimensions8.92 × 6.33 × 4.02 mm
L/W Ratio1.41
Top View
8.92 mm6.33 mm1.51 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541240788
Side View
Table 62.0%Crown 39.35°Girdle: STK-THKPavilion 36.93°Culet: 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: Oct 29
Current: £4,732 GBP|Low: £3,710 GBP|High: £7,465 GBP|Avg: £4,838 GBP|-0.6%
Retailer 1
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 29, 2026
Retailer 6£3,710 GBP
Retailer 2£3,898 GBP
Retailer 8£3,936 GBP
Retailer 4£4,014 GBP
Retailer 17£4,126 GBP
Retailer 16£4,160 GBP
Retailer 9£4,362 GBP
Retailer 14£4,386 GBP
Retailer 5£4,409 GBP
Retailer 11£4,676 GBP
Retailer 1£4,732 GBP
Retailer 7£5,120 GBP
Retailer 15£5,347 GBP
Retailer 13£5,383 GBP
Retailer 10£5,440 GBP
Retailer 12£7,308 GBP
Retailer 3£7,465 GBP

32 data points across 17 retailers

20 retailers£3,710 GBP to £7,465 GBP

A
Cheapest Retailer
-
£3,710 GBP
HK$38,600 HKD
A
Retailer 2
-
£3,898 GBP
$5,191 USD
View
A
Retailer 3
-
£4,014 GBP
$5,346 USD
View
A
Retailer 4
-
£4,126 GBP
$5,494 USD
View
Final sale: no returns
A
Retailer 5
-
£4,160 GBP
$5,540 USD
View
A
Retailer 6
-
£4,362 GBP
SGD 7,849 SGD
View
Price last confirmed 28 days ago
A
Retailer 7
-
£4,386 GBP
SGD 7,893 SGD
View
A
Retailer 8
-
£4,409 GBP
$5,872 USD
View
A
Retailer 9
-
£4,676 GBP
View
A
Retailer 10
-
£4,732 GBP
View
A
Retailer 11
-
£4,934 GBP
$6,570 USD
View
Price last confirmed 28 days ago
A
Retailer 12
-
£5,009 GBP
$6,671 USD
View
Price last confirmed 29 days ago
A
Retailer 13
-
£5,120 GBP
$6,819 USD
View
A
Retailer 14
-
£5,347 GBP
$7,120 USD
View
A
Retailer 15
-
£5,383 GBP
€6,827 EUR
View
B+
Retailer 16
-
£5,440 GBP
$7,244 USD
View
B+
Retailer 17
-
£5,693 GBP
$7,581 USD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£7,308 GBP
View
B
Retailer 19
-
£7,465 GBP
$9,941 USD
View
Most Expensive
B
NZ Jewellers
c1fcdd3b-bb6d-4228-b653-aa4a75263e19 · Sep 30
£8,252 GBP
$10,989 USD
View
Price last confirmed 29 days ago
19 more retailers have this diamond
Prices start from £3,710 GBPSave up to £3,755 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 Oval
£3,710 GBP