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 $1,636 USD
SGD 2,211 SGD
As of October 29, 2026
Save $10,298 USD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $12,422 USD 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 29, 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $11,934 USD|Low: $1,636 USD|High: $12,212 USD|Avg: $5,414 USD|-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 30, 2026
Retailer 10$1,636 USD
Retailer 8$1,916 USD
Retailer 7$1,933 USD
Retailer 2$2,457 USD
Retailer 12$2,465 USD
Retailer 13$3,407 USD
Retailer 9$5,690 USD
Retailer 14$5,789 USD
Retailer 4$6,626 USD
Retailer 11$6,803 USD
Retailer 6$7,135 USD
Retailer 3$7,245 USD
Retailer 5$10,569 USD
NZ Jewellers$11,934 USD

29 data points across 14 retailers

22 retailers$1,636 USD to $11,934 USD

A
Cheapest Retailer
-
$1,636 USD
SGD 2,211 SGD
A
Retailer 2
-
$1,916 USD
View
A
Retailer 3
-
$1,933 USD
View
A
Retailer 4
-
$1,950 USD
View
A
Retailer 5
-
$2,457 USD
£1,935 GBP
View
A
Retailer 6
-
$2,465 USD
View
A
Retailer 7
-
$2,648 USD
View
A
Retailer 8
-
$2,905 USD
View
A
Retailer 9
-
$3,407 USD
View
Retailer 10
-
$3,965 USD
View
Price last confirmed 10 days ago
A
Retailer 11
-
$5,690 USD
View
A
Retailer 12
-
$5,789 USD
View
A
Retailer 13
-
$6,277 USD
View
B+
Retailer 14
-
$6,803 USD
View
B+
Retailer 15
-
$7,135 USD
View
B+
Retailer 16
-
$7,245 USD
View
Retailer 17
-
$7,302 USD
View
Price last confirmed 23 days ago
Retailer 18
-
$7,427 USD
View
Price last confirmed 34 days ago
Retailer 19
-
$7,541 USD
View
Price last confirmed 31 days ago
B
Retailer 20
-
$11,934 USD
View
Retailer 21
-
$12,212 USD
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
6c06a3cd-2692-446b-97cd-7071d15697d8 · Sep 28
$12,422 USD
View
Price last confirmed 33 days ago
21 more retailers have this diamond
Prices start from $1,636 USDSave up to $10,298 USD

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
$1,636 USD