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2.51ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 799675383

Shape and cutting style on the report: Round brilliant

Certificate IGI 799675383

Diamond specifications and retailer prices

From £6,172 GBP
SGD 11,175 SGD
As of October 29, 2026
Save £3,429 GBP (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £9,601 GBP at The Diamond Guys · As of October 29, 2026
View at The Diamond Guys

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 799675383. Listed at 7 retailers as of October 29, 2026, with prices from £6,172 to £9,601, a £3,429 spread on the same certified stone. The Diamond Guys lists it at £9,601. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 799675383
Dimensions8.57 × 8.61 × 5.43 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
8.57 mm8.61 mm2.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 799675383
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.2%

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 29
Current: £8,457 GBP|Low: £6,014 GBP|High: £9,774 GBP|Avg: £8,047 GBP|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
October 30, 2026
Retailer 7£6,014 GBP
Retailer 5£6,172 GBP
Retailer 4£7,210 GBP
Retailer 2£7,289 GBP
Retailer 6£8,420 GBP
Retailer 1£8,457 GBP
Retailer 3£8,973 GBP
The Diamond Guys£9,601 GBP

31 data points across 8 retailers

7 retailers£6,172 GBP to £9,601 GBP

A
Cheapest Retailer
-
£6,172 GBP
SGD 11,175 SGD
A
Retailer 2
-
£7,210 GBP
$9,660 USD
View
A
Retailer 3
-
£7,289 GBP
$9,766 USD
View
A
Retailer 4
-
£8,420 GBP
$11,282 USD
View
A
Retailer 5
-
£8,457 GBP
€10,792 EUR
View
A
Retailer 6
-
£8,973 GBP
$12,022 USD
View
Most Expensive
A
The Diamond Guys
1959917951 · Oct 29
£9,601 GBP
$12,864 USD
View
6 more retailers have this diamond
Prices start from £6,172 GBPSave up to £3,429 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
2.51ct Round
£6,172 GBP