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Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

VG • F/SI1 • GIA 2556750792

Certificate GIA 2556750792

Diamond specifications and retailer prices

From £4,055 GBP
As of November 5, 2026
Save £5,015 GBP (55%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £9,069 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556750792. Listed at 23 retailers as of November 5, 2026, with prices from £4,055 to £9,069, a £5,015 spread on the same certified stone. NZ Jewellers lists it at £9,069. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle45.4°
Pavilion angle36.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556750792
Dimensions8.33 × 6.38 × 4.18 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Top View
8.33 mm6.38 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556750792
Side View
Table 65.0%Crown 45.4°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 65.6%

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 5
Current: £9,069 GBP|Low: £4,055 GBP|High: £11,900 GBP|Avg: £6,118 GBP
NZ Jewellers
Retailer 2
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Retailer 26
November 6, 2026
Retailer 26£4,055 GBP
Retailer 10£4,284 GBP
Retailer 16£4,322 GBP
Retailer 17£4,330 GBP
Retailer 4£4,492 GBP
Retailer 12£4,535 GBP
Retailer 23£4,561 GBP
Retailer 2£4,811 GBP
Retailer 7£4,913 GBP
Retailer 14£4,988 GBP
Retailer 13£5,046 GBP
Retailer 6£5,101 GBP
Retailer 8£5,213 GBP
Retailer 20£5,259 GBP
Retailer 19£5,326 GBP
Retailer 5£5,461 GBP
Retailer 9£5,461 GBP
Retailer 22£5,546 GBP
Retailer 21£5,641 GBP
Retailer 25£5,668 GBP
Retailer 15£5,878 GBP
Retailer 3£6,209 GBP
Retailer 24£6,616 GBP
Retailer 11£7,536 GBP
NZ Jewellers£9,069 GBP
Retailer 18£10,154 GBP

23 data points across 26 retailers

23 retailers£4,055 GBP to £9,069 GBP

A
Cheapest Retailer
-
£4,055 GBP
A
Retailer 2
-
£4,284 GBP
View
Retailer 3
-
£4,322 GBP
View
Price last confirmed 31 days ago
A
Retailer 4
-
£4,492 GBP
View
B+
Retailer 5
-
£4,535 GBP
View
Final sale: no returns
A
Retailer 6
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£4,561 GBP
View
B+
Retailer 7
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£4,811 GBP
View
B+
Retailer 8
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£4,913 GBP
View
B+
Retailer 9
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£4,988 GBP
View
B+
Retailer 10
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£5,046 GBP
View
B+
Retailer 11
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£5,101 GBP
View
B+
Retailer 12
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£5,213 GBP
View
B+
Retailer 13
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£5,259 GBP
View
B+
Retailer 14
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£5,326 GBP
View
B+
Retailer 15
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£5,461 GBP
View
B+
Retailer 16
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£5,461 GBP
View
B+
Retailer 17
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£5,546 GBP
View
B+
Retailer 18
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£5,641 GBP
View
B+
Retailer 19
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£5,668 GBP
View
B
Retailer 20
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£6,209 GBP
View
B
Retailer 21
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£6,616 GBP
View
B
Retailer 22
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£7,536 GBP
View
Most Expensive
B
NZ Jewellers
20bb4578-7047-4508-a00a-dd547a0f2ff0 · Nov 5
£9,069 GBP
$12,139 USD
View
22 more retailers have this diamond
Prices start from £4,055 GBPSave up to £5,015 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
£4,055 GBP