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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 $11,772 AUD
SGD 11,175 SGD
As of October 31, 2026
Save $6,541 AUD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $18,313 AUD at The Diamond Guys · As of October 31, 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 31, 2026, with prices from $11,772 to $18,313, a $6,541 spread on the same certified stone. The Diamond Guys lists it at $18,313. 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 31
Current: $16,132 AUD|Low: $11,471 AUD|High: $18,643 AUD|Avg: $15,350 AUD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
October 30, 2026
Retailer 7$11,471 AUD
Retailer 5$11,772 AUD
Retailer 4$13,752 AUD
Retailer 2$13,903 AUD
Retailer 6$16,061 AUD
Retailer 1$16,132 AUD
Retailer 3$17,115 AUD
The Diamond Guys$18,313 AUD

31 data points across 8 retailers

7 retailers$11,772 AUD to $18,313 AUD

A
Cheapest Retailer
-
$11,772 AUD
SGD 11,175 SGD
A
Retailer 2
-
$13,752 AUD
$9,660 USD
View
A
Retailer 3
-
$13,903 AUD
$9,766 USD
View
A
Retailer 4
-
$16,061 AUD
$11,282 USD
View
A
Retailer 5
-
$16,132 AUD
€10,792 EUR
View
A
Retailer 6
-
$17,115 AUD
$12,022 USD
View
Most Expensive
A
The Diamond Guys
1959917951 · Oct 31
$18,313 AUD
$12,864 USD
View
6 more retailers have this diamond
Prices start from $11,772 AUDSave up to $6,541 AUD

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
$11,772 AUD