Oval|Natural|GIA

1.51ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 5231846819

Certificate GIA 5231846819

Diamond specifications and retailer prices

From £4,762 GBP
$6,390 USD
As of October 28, 2026
Save £3,754 GBP (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £8,516 GBP at MOH London · As of October 29, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231846819. Listed at 22 retailers as of October 28, 2026, with prices from £4,762 to £8,516, a £3,754 spread on the same certified stone. MOH London lists it at £8,516. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.6°
OriginNatural
Grading LabGIA
CertificateGIA 5231846819
Dimensions8.93 × 6.37 × 4.02 mm
L/W Ratio1.40
Top View
8.93 mm6.37 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231846819
Side View
Table 56.0%CrownGirdle: MED-THKPavilion 38.6°Culet: NoneDepth 63.1%

Caratlytics Score

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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: Oct 28
Current: £8,516 GBP|Low: £4,378 GBP|High: £9,550 GBP|Avg: £5,669 GBP|+6.3%
MOH London
Retailer 2
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Retailer 25
October 30, 2026
Retailer 11£4,378 GBP
Retailer 7£4,663 GBP
Retailer 12£4,723 GBP
Retailer 10£4,743 GBP
Retailer 22£4,762 GBP
Retailer 17£4,859 GBP
Retailer 6£4,894 GBP
Retailer 8£4,922 GBP
Retailer 3£4,990 GBP
Retailer 2£5,104 GBP
Retailer 14£5,149 GBP
Retailer 24£5,266 GBP
Retailer 9£5,295 GBP
Retailer 5£5,446 GBP
Retailer 19£5,671 GBP
Retailer 13£5,778 GBP
Retailer 20£5,874 GBP
Retailer 23£6,140 GBP
Retailer 25£6,140 GBP
Retailer 4£6,342 GBP
Retailer 21£6,342 GBP
Retailer 18£6,349 GBP
Retailer 16£6,894 GBP
MOH London£8,516 GBP
Retailer 15£9,448 GBP

21 data points across 25 retailers

22 retailers£4,762 GBP to £8,516 GBP

Retailer 1
-
£4,663 GBP
$6,258 USD
Price last confirmed 12 days ago
Retailer 2
-
£4,743 GBP
$6,365 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
£4,762 GBP
$6,390 USD
View
Retailer 4
-
£4,859 GBP
$6,520 USD
View
Price last confirmed 18 days ago
Retailer 5
-
£4,894 GBP
€6,255 EUR
View
Price last confirmed 12 days ago
Retailer 6
-
£4,922 GBP
$6,605 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
£4,990 GBP
$6,696 USD
View
B+
Retailer 8
-
£5,104 GBP
CA$9,513 CAD
View
Retailer 9
-
£5,149 GBP
$6,910 USD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
£5,266 GBP
$7,067 USD
View
Retailer 11
-
£5,416 GBP
$7,268 USD
View
Price last confirmed 12 days ago
Retailer 12
-
£5,446 GBP
A$11,243 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
£5,475 GBP
$7,347 USD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
£5,671 GBP
$7,610 USD
View
B+
Retailer 15
-
£5,778 GBP
View
B+
Retailer 16
-
£5,874 GBP
$7,882 USD
View
B+
Retailer 17
-
£6,140 GBP
$8,240 USD
View
B+
Retailer 18
-
£6,140 GBP
$8,240 USD
View
B+
Retailer 19
-
£6,342 GBP
$8,510 USD
View
B+
Retailer 20
-
£6,342 GBP
€8,105 EUR
View
Retailer 21
-
£6,349 GBP
$8,519 USD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
456809E73 · Oct 29
£8,516 GBP
View
21 more retailers have this diamond
Prices start from £4,762 GBPSave up to £3,754 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
£4,762 GBP