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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 $2,903 NZD
SGD 2,211 SGD
As of October 31, 2026
Save $18,271 NZD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $22,040 NZD 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 30, 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 31
Current: $21,174 NZD|Low: $2,903 NZD|High: $21,668 NZD|Avg: $9,442 NZD|-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
November 1, 2026
Retailer 10$2,903 NZD
Retailer 9$3,400 NZD
Retailer 8$3,429 NZD
Retailer 7$4,360 NZD
Retailer 12$4,374 NZD
Retailer 2$4,791 NZD
Retailer 13$6,044 NZD
Retailer 14$10,271 NZD
Retailer 4$11,757 NZD
Retailer 11$12,071 NZD
Retailer 6$12,660 NZD
Retailer 3$12,855 NZD
Retailer 5$18,752 NZD
NZ Jewellers$21,174 NZD

29 data points across 14 retailers

22 retailers$2,903 NZD to $21,174 NZD

A
Cheapest Retailer
-
$2,903 NZD
SGD 2,211 SGD
A
Retailer 2
-
$3,400 NZD
$1,916 USD
View
A
Retailer 3
-
$3,429 NZD
$1,933 USD
View
A
Retailer 4
-
$3,460 NZD
$1,950 USD
View
A
Retailer 5
-
$4,360 NZD
£1,935 GBP
View
A
Retailer 6
-
$4,374 NZD
$2,465 USD
View
A
Retailer 7
-
$4,698 NZD
$2,648 USD
View
A
Retailer 8
-
$4,791 NZD
$2,700 USD
View
A
Retailer 9
-
$6,044 NZD
$3,407 USD
View
A
Retailer 10
-
$7,035 NZD
$3,965 USD
View
A
Retailer 11
-
$10,096 NZD
$5,690 USD
View
A
Retailer 12
-
$10,271 NZD
$5,789 USD
View
A
Retailer 13
-
$11,137 NZD
$6,277 USD
View
B+
Retailer 14
-
$12,071 NZD
$6,803 USD
View
B+
Retailer 15
-
$12,660 NZD
$7,135 USD
View
B+
Retailer 16
-
$12,855 NZD
$7,245 USD
View
Retailer 17
-
$12,956 NZD
$7,302 USD
View
Price last confirmed 25 days ago
Retailer 18
-
$13,178 NZD
$7,427 USD
View
Price last confirmed 36 days ago
Retailer 19
-
$13,380 NZD
$7,541 USD
View
Price last confirmed 33 days ago
B
Retailer 20
-
$21,174 NZD
$11,934 USD
View
Retailer 21
-
$21,668 NZD
$12,212 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
6c06a3cd-2692-446b-97cd-7071d15697d8 · Sep 28
$22,040 NZD
$12,422 USD
View
Price last confirmed 34 days ago
21 more retailers have this diamond
Prices start from $2,903 NZDSave up to $18,271 NZD

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
$2,903 NZD