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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 €1,857 EUR
$2,075 USD
As of October 28, 2026
Save €2,441 EUR (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €4,298 EUR 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 €1,857 to €4,298, a €2,441 spread on the same certified stone. NZ Jewellers lists it at €4,298. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €4,298 EUR|Low: €1,721 EUR|High: €4,322 EUR|Avg: €2,410 EUR|-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€1,857 EUR
Retailer 3€1,902 EUR
Retailer 8€1,990 EUR
Retailer 7€2,000 EUR
Retailer 14€2,056 EUR
Retailer 15€2,056 EUR
Retailer 5€2,059 EUR
Retailer 10€2,151 EUR
Retailer 6€2,181 EUR
Retailer 2€2,275 EUR
Retailer 12€2,372 EUR
Retailer 13€2,504 EUR
Retailer 11€2,563 EUR
Retailer 9€3,622 EUR
NZ Jewellers€4,298 EUR

24 data points across 15 retailers

15 retailers€1,857 EUR to €4,298 EUR

A
Cheapest Retailer
-
€1,857 EUR
$2,075 USD
Retailer 2
-
€1,902 EUR
$2,125 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
€1,990 EUR
£1,750 GBP
View
A
Retailer 4
-
€2,000 EUR
$2,234 USD
View
B+
Retailer 5
-
€2,056 EUR
$2,297 USD
View
Retailer 6
-
€2,056 EUR
$2,297 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
€2,059 EUR
$2,300 USD
View
B+
Retailer 8
-
€2,151 EUR
$2,403 USD
View
Retailer 9
-
€2,181 EUR
$2,436 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
€2,275 EUR
£2,002 GBP
View
B+
Retailer 11
-
€2,372 EUR
$2,650 USD
View
B+
Retailer 12
-
€2,504 EUR
ZAR 45,186 ZAR
View
B+
Retailer 13
-
€2,563 EUR
View
B
Retailer 14
-
€3,622 EUR
£3,186 GBP
View
Most Expensive
B
NZ Jewellers
33babf20-f3b4-4f4a-96bc-bdf05beebe4f · Oct 27
€4,298 EUR
$4,802 USD
View
14 more retailers have this diamond
Prices start from €1,857 EURSave up to €2,441 EUR

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
€1,857 EUR