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Oval|Natural|GIA

1.51ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1553875487

Certificate GIA 1553875487

Diamond specifications and retailer prices

From £4,743 GBP
As of November 6, 2026
Save £6,021 GBP (56%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £10,764 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 1553875487. Listed at 11 retailers as of November 5, 2026, with prices from £4,743 to £10,764, a £6,021 spread on the same certified stone. NZ Jewellers lists it at £10,764. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553875487
Dimensions8.86 × 6.19 × 4.02 mm
L/W Ratio1.43
Key to symbols
Crystal, Feather, Needle
Top View
8.86 mm6.19 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553875487
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.0%

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 6
Current: £10,764 GBP|Low: £4,743 GBP|High: £11,213 GBP|Avg: £6,681 GBP|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£4,743 GBP
Retailer 8£5,245 GBP
Retailer 6£5,289 GBP
Retailer 3£5,642 GBP
Retailer 11£5,693 GBP
Retailer 2£5,989 GBP
Retailer 10£6,436 GBP
Retailer 7£6,534 GBP
Retailer 4£6,977 GBP
Retailer 5£8,944 GBP
NZ Jewellers£10,764 GBP

34 data points across 11 retailers

11 retailers£4,743 GBP to £10,764 GBP

A
Cheapest Retailer
-
£4,743 GBP
A
Retailer 2
-
£5,245 GBP
View
Retailer 3
-
£5,289 GBP
View
Price last confirmed 3 days ago
Retailer 4
-
£5,642 GBP
View
Price last confirmed 25 days ago
B+
Retailer 5
-
£5,693 GBP
View
A
Retailer 6
-
£5,989 GBP
View
B+
Retailer 7
-
£6,436 GBP
View
B+
Retailer 8
-
£6,534 GBP
View
B+
Retailer 9
-
£6,977 GBP
View
B
Retailer 10
-
£8,944 GBP
View
Most Expensive
B
NZ Jewellers
03eb7318-4dbf-444e-9944-c8b39e425396 · Nov 5
£10,764 GBP
$14,407 USD
View
10 more retailers have this diamond
Prices start from £4,743 GBPSave up to £6,021 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
£4,743 GBP