Round|Natural|IGI

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 821603781

Shape and cutting style on the report: Round brilliant

Certificate IGI 821603781

Diamond specifications and retailer prices

From $2,075 USD
As of October 28, 2026
Save $2,727 USD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,802 USD at NZ Jewellers · As of October 27, 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 821603781. Listed at 15 retailers as of October 27, 2026, with prices from $2,075 to $4,802, a $2,727 spread on the same certified stone. NZ Jewellers lists it at $4,802. 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 angle35.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 821603781
Dimensions6.40 × 6.46 × 4.00 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.40 mm6.46 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 821603781
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.2%

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 28
Current: $4,802 USD|Low: $1,923 USD|High: $4,829 USD|Avg: $2,692 USD|-0.6%
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
October 29, 2026
Retailer 4$2,075 USD
Retailer 3$2,125 USD
Retailer 8$2,223 USD
Retailer 7$2,234 USD
Retailer 14$2,297 USD
Retailer 15$2,297 USD
Retailer 5$2,300 USD
Retailer 10$2,403 USD
Retailer 6$2,436 USD
Retailer 2$2,542 USD
Retailer 12$2,650 USD
Retailer 13$2,797 USD
Retailer 11$2,863 USD
Retailer 9$4,046 USD
NZ Jewellers$4,802 USD

24 data points across 15 retailers

15 retailers$2,075 USD to $4,802 USD

A
Cheapest Retailer
-
$2,075 USD
Retailer 2
-
$2,125 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$2,223 USD
£1,750 GBP
View
A
Retailer 4
-
$2,234 USD
View
B+
Retailer 5
-
$2,297 USD
View
Retailer 6
-
$2,297 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
$2,300 USD
View
B+
Retailer 8
-
$2,403 USD
View
Retailer 9
-
$2,436 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$2,542 USD
£2,002 GBP
View
B+
Retailer 11
-
$2,650 USD
View
B+
Retailer 12
-
$2,797 USD
ZAR 45,186 ZAR
View
B+
Retailer 13
-
$2,863 USD
€2,727 EUR
View
B
Retailer 14
-
$4,046 USD
£3,186 GBP
View
Most Expensive
B
NZ Jewellers
33babf20-f3b4-4f4a-96bc-bdf05beebe4f · Oct 27
$4,802 USD
View
14 more retailers have this diamond
Prices start from $2,075 USDSave up to $2,727 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
$2,075 USD