Round|Natural|IGI

1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 843680328

Shape and cutting style on the report: Round brilliant

Certificate IGI 843680328

Diamond specifications and retailer prices

From $1,050 USD
As of November 1, 2026
Save $1,761 USD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,811 USD at NZ Jewellers · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 843680328. Listed at 15 retailers as of November 1, 2026, with prices from $1,050 to $2,811, a $1,761 spread on the same certified stone. NZ Jewellers lists it at $2,811. 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
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 843680328
Dimensions6.43 × 6.40 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.43 mm6.40 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 843680328
Side View
Table 59.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 1
Current: $1,352 USD|Low: $1,105 USD|High: $1,618 USD|Avg: $1,263 USD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 2$1,105 USD
Retailer 6$1,105 USD
Retailer 3$1,106 USD
Retailer 9$1,153 USD
Retailer 10$1,196 USD
Retailer 8$1,286 USD
Retailer 5$1,350 USD
Retailer 1$1,352 USD
Retailer 7$1,406 USD
Retailer 4$1,608 USD

16 data points across 10 retailers

15 retailers$1,050 USD to $2,811 USD

A
Cheapest Retailer
-
$1,050 USD
A
Retailer 2
-
$1,105 USD
View
A
Retailer 3
-
$1,105 USD
View
A
Retailer 4
-
$1,106 USD
View
A
Retailer 5
-
$1,130 USD
View
Retailer 6
-
$1,153 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,153 USD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$1,196 USD
View
Retailer 9
-
$1,197 USD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$1,286 USD
View
B+
Retailer 11
-
$1,350 USD
View
A
Retailer 12
-
$1,352 USD
View
B+
Retailer 13
-
$1,406 USD
View
A
Retailer 14
-
$1,608 USD
View
Most Expensive
B
NZ Jewellers
a99e7a8a-d8b4-41cd-a0ea-3dc776b9a62e · Nov 2
$2,811 USD
View
14 more retailers have this diamond
Prices start from $1,050 USDSave up to $1,761 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
$1,050 USD