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Round|Natural|GIA

1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 2245021465

Certificate GIA 2245021465

Diamond specifications and retailer prices

From £4,979 GBP
HK$52,200 HKD
As of November 1, 2026
Save £4,361 GBP (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £9,340 GBP at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245021465. Listed at 19 retailers as of November 1, 2026, with prices from £4,979 to £9,340, a £4,361 spread on the same certified stone. MOH London lists it at £9,340. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2245021465
Dimensions7.30 × 7.33 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.30 mm7.33 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245021465
Side View
Table 56.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: £9,340 GBP|Low: £4,979 GBP|High: £9,720 GBP|Avg: £6,577 GBP|-2.6%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 4£4,979 GBP
Retailer 14£5,004 GBP
Retailer 3£5,074 GBP
Retailer 15£5,147 GBP
Retailer 17£5,226 GBP
Retailer 2£5,543 GBP
Retailer 18£5,560 GBP
Retailer 5£5,582 GBP
Retailer 12£6,155 GBP
Retailer 6£6,266 GBP
Retailer 10£6,426 GBP
Retailer 7£6,669 GBP
Retailer 8£6,692 GBP
Retailer 11£6,893 GBP
Retailer 13£6,923 GBP
Retailer 9£7,024 GBP
Retailer 16£8,233 GBP
MOH London£9,340 GBP

29 data points across 18 retailers

19 retailers£4,979 GBP to £9,340 GBP

A
Cheapest Retailer
-
£4,979 GBP
HK$52,200 HKD
A
Retailer 2
-
£5,004 GBP
$6,715 USD
View
A
Retailer 3
-
£5,074 GBP
$6,809 USD
View
A
Retailer 4
-
£5,147 GBP
$6,907 USD
View
A
Retailer 5
-
£5,226 GBP
A$10,789 AUD
View
B+
Retailer 6
-
£5,543 GBP
CA$10,331 CAD
View
B+
Retailer 7
-
£5,560 GBP
$7,461 USD
View
Final sale: no returns
B+
Retailer 8
-
£5,582 GBP
$7,491 USD
View
B+
Retailer 9
-
£6,155 GBP
View
B+
Retailer 10
-
£6,266 GBP
$8,408 USD
View
Retailer 11
-
£6,426 GBP
A$13,266 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£6,669 GBP
$8,950 USD
View
B+
Retailer 13
-
£6,692 GBP
$8,980 USD
View
B+
Retailer 14
-
£6,893 GBP
$9,250 USD
View
B+
Retailer 15
-
£6,923 GBP
€8,848 EUR
View
B+
Retailer 16
-
£7,024 GBP
$9,426 USD
View
Retailer 17
-
£7,509 GBP
$10,077 USD
View
Price last confirmed 19 days ago
B
Retailer 18
-
£8,233 GBP
ZAR 178,494 ZAR
View
Most Expensive
B
MOH London
C7551D8A6 · Nov 1
£9,340 GBP
View
18 more retailers have this diamond
Prices start from £4,979 GBPSave up to £4,361 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
£4,979 GBP