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1.04ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1545806558

Certificate GIA 1545806558

Diamond specifications and retailer prices

From €2,309 EUR
As of November 5, 2026
Save €470 EUR (17%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €2,780 EUR at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.04ct natural round diamond

This 1.04ct 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 1545806558. Listed at 4 retailers as of November 5, 2026, with prices from €2,309 to €2,780, a €470 spread on the same certified stone. Blue Nile lists it at €2,780. 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

1.04
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1545806558
Dimensions6.46 × 6.49 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
6.46 mm6.49 mm1.04 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545806558
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €2,780 EUR|Low: €2,240 EUR|High: €2,866 EUR|Avg: €2,584 EUR|-1.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4€2,309 EUR
Retailer 2€2,480 EUR
Retailer 3€2,655 EUR
Blue Nile€2,780 EUR

37 data points across 4 retailers

4 retailers€2,309 EUR to €2,780 EUR

B+
Cheapest Retailer
-
€2,309 EUR
B+
Retailer 2
-
€2,480 EUR
View
B
Retailer 3
-
€2,655 EUR
View
Most Expensive
B
Blue Nile
28515650 · Nov 5
€2,780 EUR
$3,120 USD
View
3 more retailers have this diamond
Prices start from €2,309 EURSave up to €470 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.

B+
1.04ct Round
€2,309 EUR