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Round|Natural|IGI

2.51ct G SI2 Round Natural Diamond

VG • G/SI2 • IGI 835613860

Shape and cutting style on the report: Round brilliant

Certificate IGI 835613860

Diamond specifications and retailer prices

From $12,001 AUD
$8,430 USD
As of October 30, 2026
Save $11,224 AUD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $23,225 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 very-good cut grade and certified by IGI 835613860. Listed at 15 retailers as of October 30, 2026, with prices from $12,001 to $23,225, a $11,224 spread on the same certified stone. NZ Jewellers lists it at $23,225. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 835613860
Dimensions8.47 × 8.52 × 5.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
8.47 mm8.52 mm2.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 835613860
Side View
Table 61.0%Crown 37.1°Girdle: STK-THKPavilion 41.7°Culet: NoneDepth 64.3%

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 30
Current: $23,225 AUD|Low: $10,094 AUD|High: $23,225 AUD|Avg: $14,424 AUD
NZ Jewellers
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
October 31, 2026
Retailer 2$10,120 AUD
Retailer 4$12,001 AUD
Retailer 5$12,311 AUD
Retailer 12$12,818 AUD
Retailer 8$13,401 AUD
Retailer 6$13,567 AUD
Retailer 3$13,886 AUD
Retailer 11$13,888 AUD
Retailer 13$14,099 AUD
Retailer 10$14,198 AUD
Retailer 7$14,425 AUD
Retailer 14$16,021 AUD
Retailer 9$19,456 AUD
NZ Jewellers$23,225 AUD

15 data points across 14 retailers

15 retailers$12,001 AUD to $23,225 AUD

Retailer 1
-
$10,120 AUD
₹677,031 INR
Price under review
A
Retailer 2
-
$12,001 AUD
$8,430 USD
View
A
Retailer 3
-
$12,311 AUD
$8,648 USD
View
A
Retailer 4
-
$12,818 AUD
$9,004 USD
View
A
Retailer 5
-
$13,401 AUD
£7,412 GBP
View
A
Retailer 6
-
$13,567 AUD
$9,530 USD
View
A
Retailer 7
-
$13,795 AUD
$9,690 USD
View
A
Retailer 8
-
$13,886 AUD
$9,754 USD
View
A
Retailer 9
-
$13,888 AUD
$9,756 USD
View
A
Retailer 10
-
$14,099 AUD
$9,904 USD
View
A
Retailer 11
-
$14,198 AUD
$9,973 USD
View
A
Retailer 12
-
$14,425 AUD
€9,650 EUR
View
B+
Retailer 13
-
$16,021 AUD
$11,254 USD
View
A
Retailer 14
-
$19,456 AUD
£10,761 GBP
View
Most Expensive
B+
NZ Jewellers
fc532552-2595-462d-85e1-9a4f50fe25a9 · Oct 30
$23,225 AUD
$16,314 USD
View
14 more retailers have this diamond
Prices start from $12,001 AUDSave up to $11,224 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
$12,001 AUD