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Oval|Natural|GIA

1.51ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 6522365391

Certificate GIA 6522365391

Diamond specifications and retailer prices

From £4,451 GBP
$5,973 USD
As of November 1, 2026
Save £4,970 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £9,421 GBP at NZ Jewellers · As of October 30, 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 6522365391. Listed at 16 retailers as of October 30, 2026, with prices from £4,451 to £9,421, a £4,970 spread on the same certified stone. NZ Jewellers lists it at £9,421. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle38.74°
Pavilion angle39.76°
OriginNatural
Grading LabGIA
CertificateGIA 6522365391
Dimensions9.38 × 6.32 × 3.85 mm
L/W Ratio1.48
Top View
9.38 mm6.32 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6522365391
Side View
Table 59.0%Crown 38.74°Girdle: MED-THKPavilion 39.76°Culet: NoneDepth 61.0%

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 1
Current: £9,421 GBP|Low: £4,451 GBP|High: £9,421 GBP|Avg: £5,884 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9£4,451 GBP
Retailer 8£4,711 GBP
Retailer 6£5,103 GBP
Retailer 11£5,182 GBP
Retailer 4£5,311 GBP
Retailer 10£5,372 GBP
Retailer 3£5,576 GBP
Retailer 7£5,888 GBP
Retailer 2£6,154 GBP
Retailer 5£7,850 GBP
NZ Jewellers£9,421 GBP

44 data points across 11 retailers

16 retailers£4,451 GBP to £9,421 GBP

A
Cheapest Retailer
-
£4,451 GBP
$5,973 USD
A
Retailer 2
-
£4,711 GBP
$6,322 USD
View
B+
Retailer 3
-
£4,750 GBP
$6,374 USD
View
B+
Retailer 4
-
£5,103 GBP
$6,848 USD
View
B+
Retailer 5
-
£5,182 GBP
$6,954 USD
View
B+
Retailer 6
-
£5,311 GBP
View
B+
Retailer 7
-
£5,576 GBP
$7,483 USD
View
Retailer 8
-
£5,888 GBP
$7,902 USD
View
Price last confirmed 62 days ago
B+
Retailer 9
-
£5,888 GBP
$7,902 USD
View
B+
Retailer 10
-
£5,962 GBP
$8,000 USD
View
B+
Retailer 11
-
£5,962 GBP
$8,000 USD
View
B+
Retailer 12
-
£6,154 GBP
€7,865 EUR
View
B
Retailer 13
-
£6,163 GBP
$8,270 USD
View
B
Retailer 14
-
£7,850 GBP
View
Retailer 15
-
£9,421 GBP
$12,643 USD
View
Price last confirmed 64 days ago
Most Expensive
B
NZ Jewellers
eb984eed-b178-4d39-863e-7afc21aeca99 · Oct 30
£9,421 GBP
$12,643 USD
View
15 more retailers have this diamond
Prices start from £4,451 GBPSave up to £4,970 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
£4,451 GBP