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Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 6233707718

Certificate GIA 6233707718

Diamond specifications and retailer prices

From £4,247 GBP
As of November 2, 2026
Save £3,292 GBP (44%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £7,539 GBP at NZ Jewellers · As of November 2, 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 F 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 6233707718. Listed at 6 retailers as of November 2, 2026, with prices from £4,247 to £7,539, a £3,292 spread on the same certified stone. NZ Jewellers lists it at £7,539. 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
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.03°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6233707718
Dimensions8.82 × 6.36 × 4.08 mm
L/W Ratio1.39
Top View
8.82 mm6.36 mm1.51 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233707718
Side View
Table 61.0%Crown 37.03°Girdle: MediumPavilion 40.8°Culet: NoneDepth 64.2%

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 2
Current: £7,539 GBP|Low: £4,247 GBP|High: £7,617 GBP|Avg: £5,271 GBP|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3£4,247 GBP
Retailer 5£4,508 GBP
Retailer 6£4,508 GBP
Retailer 7£4,584 GBP
Retailer 10£4,640 GBP
Retailer 8£4,874 GBP
Retailer 9£5,066 GBP
Retailer 2£5,095 GBP
Retailer 4£6,640 GBP
NZ Jewellers£7,539 GBP

29 data points across 10 retailers

6 retailers£4,247 GBP to £7,539 GBP

A
Cheapest Retailer
-
£4,247 GBP
A
Retailer 2
-
£4,508 GBP
View
A
Retailer 3
-
£4,508 GBP
View
A
Retailer 4
-
£4,584 GBP
View
B+
Retailer 5
-
£6,640 GBP
View
Most Expensive
B
NZ Jewellers
a2274e47-11d6-446e-bc6b-0c603322b6b4 · Nov 2
£7,539 GBP
$10,091 USD
View
5 more retailers have this diamond
Prices start from £4,247 GBPSave up to £3,292 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
£4,247 GBP