Round|Natural|GIA

2.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 7546635206

Certificate GIA 7546635206

Diamond specifications and retailer prices

From £18,372 GBP
$24,616 USD
As of October 31, 2026
Save £13,260 GBP (42%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £31,631 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7546635206. Listed at 25 retailers as of October 31, 2026, with prices from £18,372 to £31,631, a £13,260 spread on the same certified stone. MOH London lists it at £31,631. 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

2.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546635206
Dimensions8.63 × 5.41 × 5.41 mm
L/W Ratio1.60
Culet sizeNone
Top View
8.63 mm5.41 mm2.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546635206
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £31,631 GBP|Low: £18,151 GBP|High: £32,012 GBP|Avg: £22,517 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9£18,372 GBP
Retailer 10£19,409 GBP
Retailer 3£19,707 GBP
Retailer 8£20,254 GBP
Retailer 11£20,405 GBP
Retailer 4£20,439 GBP
Retailer 6£20,735 GBP
Retailer 2£24,466 GBP
Retailer 7£26,217 GBP
Retailer 5£28,006 GBP
MOH London£31,631 GBP

25 data points across 11 retailers

25 retailers£18,372 GBP to £31,631 GBP

B+
Cheapest Retailer
-
£18,372 GBP
$24,616 USD
B+
Retailer 2
-
£18,440 GBP
$24,707 USD
View
B+
Retailer 3
-
£19,409 GBP
$26,006 USD
View
Final sale: no returns
B+
Retailer 4
-
£19,707 GBP
$26,405 USD
View
B+
Retailer 5
-
£20,254 GBP
$27,138 USD
View
Retailer 6
-
£20,405 GBP
A$42,062 AUD
View
Price last confirmed 28 days ago
B+
Retailer 7
-
£20,439 GBP
View
B+
Retailer 8
-
£20,614 GBP
$27,620 USD
View
B+
Retailer 9
-
£20,614 GBP
$27,620 USD
View
B+
Retailer 10
-
£20,735 GBP
$27,782 USD
View
Retailer 11
-
£21,097 GBP
$28,268 USD
View
Price last confirmed 43 days ago
Retailer 12
-
£21,097 GBP
$28,268 USD
View
Price last confirmed 36 days ago
Retailer 13
-
£21,266 GBP
$28,494 USD
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£21,300 GBP
$28,540 USD
View
B+
Retailer 15
-
£21,651 GBP
$29,010 USD
View
Retailer 16
-
£21,941 GBP
$29,399 USD
View
Price last confirmed 43 days ago
Retailer 17
-
£21,941 GBP
$29,399 USD
View
Price last confirmed 31 days ago
B
Retailer 18
-
£22,289 GBP
$29,864 USD
View
Retailer 19
-
£22,785 GBP
$30,530 USD
View
Price last confirmed 40 days ago
B
Retailer 20
-
£22,785 GBP
$30,530 USD
View
Retailer 21
-
£22,785 GBP
$30,530 USD
View
Price last confirmed 34 days ago
B+
Retailer 22
-
£24,466 GBP
€31,221 EUR
View
B
Retailer 23
-
£26,217 GBP
View
B
Retailer 24
-
£28,006 GBP
ZAR 606,219 ZAR
View
Most Expensive
B
MOH London
778BDD37E · Nov 1
£31,631 GBP
View
24 more retailers have this diamond
Prices start from £18,372 GBPSave up to £13,260 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.

B+
2.51ct Round
£18,372 GBP