Round|Natural|IGI

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 754512609

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512609

Diamond specifications and retailer prices

From $1,672 USD
As of November 6, 2026
Save $2,828 USD (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $4,500 USD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512609. Listed at 21 retailers as of November 5, 2026, with prices from $1,672 to $4,500, a $2,828 spread on the same certified stone. NZ Jewellers lists it at $4,500. 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

1.03
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 754512609
Dimensions6.49 × 6.53 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.49 mm6.53 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512609
Side View
Table 59.0%Crown 31.4°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.3%

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: Nov 6
Current: $4,500 USD|Low: $1,672 USD|High: $4,500 USD|Avg: $2,483 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
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 2$1,672 USD
Retailer 10$1,890 USD
Retailer 9$1,944 USD
Retailer 11$1,986 USD
Retailer 18$2,006 USD
Retailer 13$2,059 USD
Retailer 5$2,152 USD
Retailer 7$2,152 USD
Retailer 21$2,170 USD
Retailer 3$2,187 USD
Retailer 6$2,252 USD
Retailer 4$2,291 USD
Retailer 8$2,364 USD
Retailer 19$2,365 USD
Retailer 16$2,470 USD
Retailer 12$2,483 USD
Retailer 17$2,627 USD
Retailer 15$2,858 USD
Retailer 14$3,231 USD
Retailer 20$3,760 USD
NZ Jewellers$4,500 USD

21 data points across 21 retailers

21 retailers$1,672 USD to $4,500 USD

A
Cheapest Retailer
-
$1,672 USD
A
Retailer 2
-
$1,890 USD
View
A
Retailer 3
-
$1,944 USD
View
A
Retailer 4
-
$1,986 USD
View
Final sale: no returns
A
Retailer 5
-
$2,006 USD
View
A
Retailer 6
-
$2,059 USD
View
A
Retailer 7
-
$2,152 USD
View
Retailer 8
-
$2,152 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,170 USD
View
A
Retailer 10
-
$2,187 USD
View
A
Retailer 11
-
$2,252 USD
View
B+
Retailer 12
-
$2,291 USD
View
B+
Retailer 13
-
$2,364 USD
View
A
Retailer 14
-
$2,365 USD
View
B+
Retailer 15
-
$2,470 USD
View
B+
Retailer 16
-
$2,483 USD
View
B+
Retailer 17
-
$2,627 USD
View
B+
Retailer 18
-
$2,858 USD
View
B
Retailer 19
-
$3,231 USD
View
B
Retailer 20
-
$3,760 USD
View
Most Expensive
B
NZ Jewellers
8a27d3b3-6ae1-4384-927b-ca29b6703e37 · Nov 5
$4,500 USD
View
20 more retailers have this diamond
Prices start from $1,672 USDSave up to $2,828 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
1.03ct Round
$1,672 USD