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Round|Natural|IGI

1.50ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 803677130

Shape and cutting style on the report: Round brilliant

Certificate IGI 803677130

Diamond specifications and retailer prices

From $2,326 AUD
SGD 2,211 SGD
As of October 29, 2026
Save $14,643 AUD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $17,663 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 803677130. Listed at 22 retailers as of October 27, 2026, with a 629% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 803677130
Dimensions7.23 × 7.28 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.23 mm7.28 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803677130
Side View
Table 55.0%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.8%

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: $16,969 AUD|Low: $2,326 AUD|High: $17,364 AUD|Avg: $7,670 AUD|-2.3%
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 28, 2026
Retailer 9$2,326 AUD
Retailer 7$2,724 AUD
Retailer 2$2,748 AUD
Retailer 11$3,505 AUD
Retailer 14$3,548 AUD
Retailer 12$4,844 AUD
Retailer 8$8,091 AUD
Retailer 13$8,231 AUD
Retailer 4$9,422 AUD
Retailer 10$9,673 AUD
Retailer 6$10,145 AUD
Retailer 3$10,302 AUD
Retailer 5$15,028 AUD
NZ Jewellers$16,969 AUD

28 data points across 14 retailers

22 retailers$2,326 AUD to $16,969 AUD

A
Cheapest Retailer
-
$2,326 AUD
SGD 2,211 SGD
A
Retailer 2
-
$2,724 AUD
$1,916 USD
View
A
Retailer 3
-
$2,748 AUD
$1,933 USD
View
A
Retailer 4
-
$2,773 AUD
$1,950 USD
View
A
Retailer 5
-
$3,505 AUD
$2,465 USD
View
A
Retailer 6
-
$3,548 AUD
£1,965 GBP
View
A
Retailer 7
-
$3,765 AUD
$2,648 USD
View
A
Retailer 8
-
$4,131 AUD
$2,905 USD
View
A
Retailer 9
-
$4,844 AUD
$3,407 USD
View
A
Retailer 10
-
$5,638 AUD
$3,965 USD
View
Price last confirmed 8 days ago
A
Retailer 11
-
$8,091 AUD
$5,690 USD
View
A
Retailer 12
-
$8,231 AUD
$5,789 USD
View
A
Retailer 13
-
$8,925 AUD
$6,277 USD
View
B+
Retailer 14
-
$9,673 AUD
$6,803 USD
View
B+
Retailer 15
-
$10,145 AUD
$7,135 USD
View
B+
Retailer 16
-
$10,302 AUD
$7,245 USD
View
B+
Retailer 17
-
$10,383 AUD
$7,302 USD
View
Price last confirmed 21 days ago
B+
Retailer 18
-
$10,560 AUD
$7,427 USD
View
Price last confirmed 32 days ago
B+
Retailer 19
-
$10,723 AUD
$7,541 USD
View
Price last confirmed 29 days ago
B
Retailer 20
-
$16,969 AUD
$11,934 USD
View
B
Retailer 21
-
$17,364 AUD
$12,212 USD
View
Price last confirmed 26 days ago
Most Expensive
B
NZ Jewellers
6c06a3cd-2692-446b-97cd-7071d15697d8 · Sep 28
$17,663 AUD
$12,422 USD
View
Price last confirmed 31 days ago
21 more retailers have this diamond
Prices start from $2,326 AUDSave up to $14,643 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
1.50ct Round
$2,326 AUD