Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

ID • E/SI1 • GIA 2538516298

Certificate GIA 2538516298

Diamond specifications and retailer prices

From £5,495 GBP
As of November 1, 2026
Save £6,832 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,327 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2538516298. Listed at 15 retailers as of November 1, 2026, with prices from £5,495 to £12,327, a £6,832 spread on the same certified stone. NZ Jewellers lists it at £12,327. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle41.36°
Pavilion angle39.16°
OriginNatural
Grading LabGIA
CertificateGIA 2538516298
Dimensions8.49 × 6.25 × 4.17 mm
L/W Ratio1.36
Top View
8.49 mm6.25 mm1.51 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2538516298
Side View
Table 57.0%Crown 41.36°Girdle: ThickPavilion 39.16°Culet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £8,008 GBP|Low: £5,495 GBP|High: £10,395 GBP|Avg: £7,349 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7£5,495 GBP
Retailer 9£5,771 GBP
Retailer 10£6,130 GBP
Retailer 11£6,271 GBP
Retailer 4£6,776 GBP
Retailer 2£6,780 GBP
Retailer 8£6,811 GBP
Retailer 3£7,704 GBP
Retailer 1£8,008 GBP
Retailer 5£8,992 GBP
Retailer 6£10,244 GBP

46 data points across 11 retailers

15 retailers£5,495 GBP to £12,327 GBP

A
Cheapest Retailer
-
£5,495 GBP
Retailer 2
-
£5,771 GBP
View
Price last confirmed 11 days ago
B+
Retailer 3
-
£6,009 GBP
View
B+
Retailer 4
-
£6,130 GBP
View
Retailer 5
-
£6,164 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£6,271 GBP
View
B+
Retailer 7
-
£6,677 GBP
View
B+
Retailer 8
-
£6,776 GBP
View
B+
Retailer 9
-
£6,780 GBP
View
Retailer 10
-
£6,811 GBP
View
Price last confirmed 14 days ago
B+
Retailer 11
-
£7,704 GBP
View
B+
Retailer 12
-
£8,008 GBP
View
B
Retailer 13
-
£8,992 GBP
View
B
Retailer 14
-
£10,244 GBP
View
Most Expensive
B
NZ Jewellers
bfcda0e1-43b7-44b5-b715-b7633484abd4 · Nov 5
£12,327 GBP
$16,500 USD
View
14 more retailers have this diamond
Prices start from £5,495 GBPSave up to £6,832 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
£5,495 GBP