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Oval|Natural|GIA

1.51ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 5393552506

Certificate GIA 5393552506

Diamond specifications and retailer prices

From £2,493 GBP
As of November 6, 2026
Save £3,458 GBP (58%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,951 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5393552506. Listed at 13 retailers as of November 5, 2026, with prices from £2,493 to £5,951, a £3,458 spread on the same certified stone. NZ Jewellers lists it at £5,951. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5393552506
Dimensions8.96 × 6.30 × 3.83 mm
L/W Ratio1.42
Top View
8.96 mm6.30 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5393552506
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.7%

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 6
Current: £5,951 GBP|Low: £2,493 GBP|High: £5,951 GBP|Avg: £3,697 GBP
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
November 6, 2026
Retailer 8£2,493 GBP
Retailer 3£2,722 GBP
Retailer 5£3,095 GBP
Retailer 11£3,095 GBP
Retailer 13£3,095 GBP
Retailer 4£3,145 GBP
Retailer 6£3,363 GBP
Retailer 2£3,399 GBP
Retailer 12£3,570 GBP
Retailer 9£3,863 GBP
Retailer 10£4,941 GBP
Retailer 7£5,425 GBP
NZ Jewellers£5,951 GBP

43 data points across 13 retailers

13 retailers£2,493 GBP to £5,951 GBP

A
Cheapest Retailer
-
£2,493 GBP
B+
Retailer 2
-
£2,722 GBP
View
Retailer 3
-
£3,095 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£3,095 GBP
View
B+
Retailer 5
-
£3,095 GBP
View
B+
Retailer 6
-
£3,145 GBP
View
B+
Retailer 7
-
£3,363 GBP
View
B+
Retailer 8
-
£3,399 GBP
View
B+
Retailer 9
-
£3,570 GBP
View
B
Retailer 10
-
£3,863 GBP
View
B
Retailer 11
-
£4,941 GBP
View
B
Retailer 12
-
£5,425 GBP
View
Most Expensive
B
NZ Jewellers
190de76b-41cc-49dd-905a-593ead80c1cb · Nov 5
£5,951 GBP
$7,965 USD
View
12 more retailers have this diamond
Prices start from £2,493 GBPSave up to £3,458 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
£2,493 GBP