Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6522283802

Certificate GIA 6522283802

Diamond specifications and retailer prices

From £3,848 GBP
$5,156 USD
As of November 1, 2026
Save £3,673 GBP (49%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £8,145 GBP at NZ Jewellers · As of September 29, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6522283802. Listed at 27 retailers as of October 28, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.93°
Pavilion angle38.92°
OriginNatural
Grading LabGIA
CertificateGIA 6522283802
Dimensions9.02 × 6.51 × 3.92 mm
L/W Ratio1.39
Top View
9.02 mm6.51 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522283802
Side View
Table 60.0%Crown 38.93°Girdle: MED-THKPavilion 38.92°Culet: NoneDepth 60.2%

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: Nov 1
Current: £8,145 GBP|Low: £3,862 GBP|High: £8,145 GBP|Avg: £5,205 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
Retailer 14
November 2, 2026
Retailer 13£3,862 GBP
Retailer 6£3,943 GBP
Retailer 5£4,072 GBP
Retailer 3£4,412 GBP
Retailer 11£4,412 GBP
Retailer 14£4,412 GBP
Retailer 12£4,429 GBP
Retailer 7£4,672 GBP
Retailer 8£4,719 GBP
Retailer 4£5,091 GBP
Retailer 2£5,320 GBP
Retailer 9£7,175 GBP
Retailer 10£7,521 GBP
NZ Jewellers£8,145 GBP

31 data points across 14 retailers

27 retailers£3,848 GBP to £7,521 GBP

A
Cheapest Retailer
-
£3,848 GBP
$5,156 USD
A
Retailer 2
-
£3,862 GBP
$5,175 USD
View
A
Retailer 3
-
£3,943 GBP
$5,283 USD
View
B+
Retailer 4
-
£4,072 GBP
$5,456 USD
View
Final sale: no returns
B+
Retailer 5
-
£4,107 GBP
$5,503 USD
View
B+
Retailer 6
-
£4,353 GBP
$5,833 USD
View
B+
Retailer 7
-
£4,412 GBP
$5,912 USD
View
Retailer 8
-
£4,412 GBP
$5,912 USD
View
Price last confirmed 25 days ago
Retailer 9
-
£4,412 GBP
$5,912 USD
View
Price last confirmed 10 days ago
Retailer 10
-
£4,412 GBP
$5,912 USD
View
Price last confirmed 33 days ago
Retailer 11
-
£4,412 GBP
$5,912 USD
View
Price last confirmed 16 days ago
Retailer 12
-
£4,412 GBP
$5,912 USD
View
Price last confirmed 17 days ago
B+
Retailer 13
-
£4,429 GBP
$5,935 USD
View
B+
Retailer 14
-
£4,672 GBP
View
B+
Retailer 15
-
£4,719 GBP
View
B+
Retailer 16
-
£4,732 GBP
$6,340 USD
View
B+
Retailer 17
-
£4,732 GBP
$6,340 USD
View
B+
Retailer 18
-
£4,888 GBP
$6,550 USD
View
Retailer 19
-
£5,091 GBP
$6,821 USD
View
Price last confirmed 23 days ago
Retailer 20
-
£5,091 GBP
$6,821 USD
View
Price last confirmed 12 days ago
B+
Retailer 21
-
£5,091 GBP
$6,821 USD
View
B+
Retailer 22
-
£5,320 GBP
€6,789 EUR
View
B
Retailer 23
-
£7,175 GBP
View
B
Retailer 24
-
£7,521 GBP
View
Retailer 25
-
£8,145 GBP
$10,914 USD
View
Price last confirmed 12 days ago
Retailer 26
-
£8,145 GBP
$10,914 USD
View
Price last confirmed 49 days ago
Most Expensive
NZ Jewellers
da5ce6fe-3a1c-47b2-9226-edb6062ab5e5 · Sep 29
£8,145 GBP
$10,914 USD
View
Price last confirmed 33 days ago
26 more retailers have this diamond
Prices start from £3,848 GBPSave up to £3,673 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
£3,848 GBP