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1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 754512323

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512323

Diamond specifications and retailer prices

From $2,837 USD
₹270,212 INR
As of October 30, 2026
Save $3,280 USD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,117 USD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512323. Listed at 18 retailers as of October 30, 2026, with prices from $2,837 to $6,117, a $3,280 spread on the same certified stone. NZ Jewellers lists it at $6,117. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 754512323
Dimensions7.21 × 7.25 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.21 mm7.25 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512323
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.4%

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: $6,117 USD|Low: $2,827 USD|High: $6,311 USD|Avg: $3,917 USD
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 2$2,837 USD
Retailer 16$3,020 USD
Retailer 7$3,117 USD
Retailer 5$3,164 USD
Retailer 8$3,240 USD
Retailer 18$3,442 USD
Retailer 6$3,511 USD
Retailer 13$3,511 USD
Retailer 4$3,572 USD
Retailer 14$3,646 USD
Retailer 15$3,656 USD
Retailer 11$3,809 USD
Retailer 10$4,051 USD
Retailer 3$4,070 USD
Retailer 12$4,111 USD
Retailer 9$5,386 USD
Retailer 17$5,879 USD
NZ Jewellers$6,117 USD

35 data points across 18 retailers

18 retailers$2,837 USD to $6,117 USD

A
Cheapest Retailer
-
$2,837 USD
₹270,212 INR
A
Retailer 2
-
$3,020 USD
View
A
Retailer 3
-
$3,117 USD
View
A
Retailer 4
-
$3,164 USD
SGD 4,276 SGD
View
A
Retailer 5
-
$3,240 USD
View
Final sale: no returns
A
Retailer 6
-
$3,442 USD
View
A
Retailer 7
-
$3,511 USD
View
A
Retailer 8
-
$3,511 USD
View
A
Retailer 9
-
$3,572 USD
View
A
Retailer 10
-
$3,646 USD
View
A
Retailer 11
-
$3,656 USD
View
A
Retailer 12
-
$3,809 USD
£2,999 GBP
View
A
Retailer 13
-
$4,051 USD
View
A
Retailer 14
-
$4,070 USD
£3,205 GBP
View
A
Retailer 15
-
$4,111 USD
€3,915 EUR
View
B+
Retailer 16
-
$5,386 USD
View
B+
Retailer 17
-
$5,879 USD
£4,629 GBP
View
Most Expensive
B+
NZ Jewellers
00c94c50-0d12-4257-bd7e-735e84b4e8fe · Oct 30
$6,117 USD
View
17 more retailers have this diamond
Prices start from $2,837 USDSave up to $3,280 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
$2,837 USD