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Round|Natural|GIA

1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1559549275

Certificate GIA 1559549275

Diamond specifications and retailer prices

From €1,511 EUR
As of November 4, 2026
Save €2,481 EUR (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €3,992 EUR 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559549275. Listed at 6 retailers as of November 4, 2026, with prices from €1,511 to €3,992, a €2,481 spread on the same certified stone. NZ Jewellers lists it at €3,992. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1559549275
Dimensions6.43 × 6.46 × 4.01 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather
Top View
6.43 mm6.46 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559549275
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 4
Current: €3,992 EUR|Low: €1,258 EUR|High: €3,992 EUR|Avg: €2,324 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5€1,511 EUR
Retailer 6€1,653 EUR
Retailer 3€1,895 EUR
Retailer 2€2,098 EUR
Retailer 4€2,860 EUR
NZ Jewellers€3,992 EUR

26 data points across 6 retailers

6 retailers€1,511 EUR to €3,992 EUR

A
Cheapest Retailer
-
€1,511 EUR
Final sale: no returns
B+
Retailer 2
-
€1,653 EUR
View
B+
Retailer 3
-
€1,895 EUR
View
B+
Retailer 4
-
€2,098 EUR
View
B
Retailer 5
-
€2,860 EUR
View
Most Expensive
B
NZ Jewellers
4227146a-3a3a-46c1-b34d-3e252ed990b2 · Nov 5
€3,992 EUR
$4,481 USD
View
5 more retailers have this diamond
Prices start from €1,511 EURSave up to €2,481 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
€1,511 EUR