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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2231531483

Certificate GIA 2231531483

Diamond specifications and retailer prices

From £3,788 GBP
$5,083 USD
As of November 1, 2026
Save £4,229 GBP (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £8,017 GBP at NZ Jewellers · As of September 18, 2026
View at NZ Jewellers

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 2231531483. Listed at 19 retailers as of October 30, 2026, with a 112% 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2231531483
Dimensions7.33 × 7.30 × 4.56 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.33 mm7.30 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2231531483
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: £8,017 GBP|Low: £3,674 GBP|High: £8,017 GBP|Avg: £5,135 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 6£3,804 GBP
Retailer 7£4,008 GBP
Retailer 8£4,342 GBP
Retailer 9£4,342 GBP
Retailer 10£4,342 GBP
Retailer 2£4,529 GBP
Retailer 11£5,011 GBP
Retailer 3£5,179 GBP
Retailer 5£5,214 GBP
Retailer 4£7,062 GBP
NZ Jewellers£8,017 GBP

41 data points across 11 retailers

19 retailers£3,788 GBP to £8,017 GBP

A
Cheapest Retailer
-
£3,788 GBP
$5,083 USD
A
Retailer 2
-
£3,804 GBP
$5,105 USD
View
A
Retailer 3
-
£4,008 GBP
$5,378 USD
View
Final sale: no returns
A
Retailer 4
-
£4,342 GBP
$5,827 USD
View
A
Retailer 5
-
£4,342 GBP
$5,827 USD
View
Retailer 6
-
£4,342 GBP
$5,827 USD
View
Price last confirmed 45 days ago
A
Retailer 7
-
£4,342 GBP
$5,827 USD
View
A
Retailer 8
-
£4,529 GBP
View
Retailer 9
-
£5,011 GBP
$6,724 USD
View
Price last confirmed 46 days ago
B+
Retailer 10
-
£5,011 GBP
$6,724 USD
View
B+
Retailer 11
-
£5,045 GBP
$6,770 USD
View
B+
Retailer 12
-
£5,045 GBP
$6,770 USD
View
B+
Retailer 13
-
£5,179 GBP
$6,949 USD
View
B+
Retailer 14
-
£5,214 GBP
€6,664 EUR
View
B+
Retailer 15
-
£5,216 GBP
$7,000 USD
View
Retailer 16
-
£5,284 GBP
$7,091 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
£7,062 GBP
View
B
Retailer 18
-
£8,017 GBP
$10,758 USD
View
Most Expensive
NZ Jewellers
7aaba094-6183-4942-b78e-fd6fa58c6b60 · Sep 18
£8,017 GBP
$10,758 USD
View
Price last confirmed 45 days ago
18 more retailers have this diamond
Prices start from £3,788 GBPSave up to £4,229 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
£3,788 GBP