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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5231835612

Certificate GIA 5231835612

Diamond specifications and retailer prices

From £3,033 GBP
HK$31,800 HKD
As of November 1, 2026
Save £3,385 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,418 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct natural round diamond

This 1.51ct natural round 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 and certified by GIA 5231835612. Listed at 14 retailers as of November 1, 2026, with prices from £3,033 to £6,418, a £3,385 spread on the same certified stone. MOH London lists it at £6,418. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231835612
Dimensions7.28 × 7.31 × 4.54 mm
L/W Ratio1.00
Top View
7.28 mm7.31 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5231835612
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.3%

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: £6,418 GBP|Low: £3,033 GBP|High: £6,647 GBP|Avg: £4,177 GBP|-3.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 11£3,033 GBP
Retailer 10£3,183 GBP
Retailer 9£3,370 GBP
Retailer 12£3,461 GBP
Retailer 6£3,622 GBP
Retailer 8£3,659 GBP
Retailer 2£3,906 GBP
Retailer 4£4,073 GBP
Retailer 7£4,278 GBP
Retailer 5£4,543 GBP
Retailer 3£6,418 GBP
MOH London£6,418 GBP

27 data points across 12 retailers

14 retailers£3,033 GBP to £6,418 GBP

A
Cheapest Retailer
-
£3,033 GBP
HK$31,800 HKD
A
Retailer 2
-
£3,183 GBP
$4,272 USD
View
A
Retailer 3
-
£3,370 GBP
$4,522 USD
View
Final sale: no returns
A
Retailer 4
-
£3,461 GBP
$4,644 USD
View
A
Retailer 5
-
£3,622 GBP
$4,860 USD
View
A
Retailer 6
-
£3,659 GBP
$4,910 USD
View
A
Retailer 7
-
£3,906 GBP
View
A
Retailer 8
-
£4,073 GBP
SGD 7,386 SGD
View
A
Retailer 9
-
£4,160 GBP
A$8,588 AUD
View
A
Retailer 10
-
£4,278 GBP
View
A
Retailer 11
-
£4,543 GBP
€5,806 EUR
View
Retailer 12
-
£4,705 GBP
$6,314 USD
View
Price last confirmed 16 days ago
Retailer 13
-
£6,418 GBP
$8,612 USD
View
Price last confirmed 10 days ago
Most Expensive
B+
MOH London
16F4FA1BA · Nov 2
£6,418 GBP
View
13 more retailers have this diamond
Prices start from £3,033 GBPSave up to £3,385 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 Round
£3,033 GBP