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Oval|Natural|GIA

1.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6431020211

Certificate GIA 6431020211

Diamond specifications and retailer prices

From £3,034 GBP
₹387,147 INR
As of October 31, 2026
Save £4,662 GBP (61%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £7,695 GBP at Adiamor · As of November 1, 2026
View at Adiamor

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 6431020211. Listed at 18 retailers as of October 31, 2026, with prices from £3,034 to £7,695, a £4,662 spread on the same certified stone. Adiamor lists it at £7,695. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6431020211
Dimensions8.37 × 6.31 × 4.09 mm
L/W Ratio1.33
Top View
8.37 mm6.31 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6431020211
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.8%

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: Oct 31
Current: £4,728 GBP|Low: £2,897 GBP|High: £6,735 GBP|Avg: £4,132 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4£3,034 GBP
Retailer 5£3,038 GBP
Retailer 10£3,513 GBP
Retailer 9£3,644 GBP
Retailer 7£3,668 GBP
Retailer 8£3,856 GBP
Retailer 3£4,077 GBP
Retailer 2£4,179 GBP
Retailer 1£4,728 GBP
Retailer 6£6,691 GBP

38 data points across 10 retailers

18 retailers£3,034 GBP to £7,695 GBP

A
Cheapest Retailer
-
£3,034 GBP
₹387,147 INR
A
Retailer 2
-
£3,038 GBP
HK$31,800 HKD
View
A
Retailer 3
-
£3,513 GBP
$4,707 USD
View
A
Retailer 4
-
£3,568 GBP
$4,781 USD
View
A
Retailer 5
-
£3,644 GBP
$4,883 USD
View
Retailer 6
-
£3,668 GBP
$4,915 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£3,856 GBP
$5,167 USD
View
Final sale: no returns
B+
Retailer 8
-
£3,859 GBP
SGD 6,988 SGD
View
B+
Retailer 9
-
£4,077 GBP
View
B+
Retailer 10
-
£4,179 GBP
$5,599 USD
View
B+
Retailer 11
-
£4,179 GBP
$5,599 USD
View
B+
Retailer 12
-
£4,179 GBP
$5,599 USD
View
B+
Retailer 13
-
£4,294 GBP
$5,753 USD
View
B+
Retailer 14
-
£4,728 GBP
€6,033 EUR
View
B+
Retailer 15
-
£4,821 GBP
$6,460 USD
View
B
Retailer 16
-
£6,691 GBP
View
B
Retailer 17
-
£6,989 GBP
$9,364 USD
View
Most Expensive
B
Adiamor
D-64716253 · Nov 1
£7,695 GBP
$10,311 USD
View
17 more retailers have this diamond
Prices start from £3,034 GBPSave up to £4,662 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
£3,034 GBP