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Marquise|Natural|IGI

1.00ct K SI1 Marquise Natural Diamond

EX • K/SI1 • IGI 689598873

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 689598873

Diamond specifications and retailer prices

From €1,379 EUR
As of November 4, 2026
Save €2,250 EUR (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,629 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise 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 689598873. Listed at 16 retailers as of November 5, 2026, with prices from €1,379 to €3,629, a €2,250 spread on the same certified stone. NZ Jewellers lists it at €3,629. 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

1.00
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 689598873
Dimensions10.77 × 5.18 × 3.15 mm
L/W Ratio2.08
Girdle conditionFaceted
Top View
10.77 mm5.18 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 689598873
Side View
Table 60.0%Crown 34.3°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.8%

Caratlytics Score

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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: Nov 4
Current: €3,629 EUR|Low: €1,379 EUR|High: €3,629 EUR|Avg: €1,784 EUR
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
Retailer 16
November 6, 2026
Retailer 6€1,379 EUR
Retailer 14€1,379 EUR
Retailer 11€1,384 EUR
Retailer 2€1,443 EUR
Retailer 8€1,464 EUR
Retailer 5€1,488 EUR
Retailer 7€1,488 EUR
Retailer 15€1,557 EUR
Retailer 16€1,557 EUR
Retailer 3€1,610 EUR
Retailer 9€1,678 EUR
Retailer 4€1,717 EUR
Retailer 10€1,816 EUR
Retailer 12€2,024 EUR
Retailer 13€2,606 EUR
NZ Jewellers€3,629 EUR

24 data points across 16 retailers

16 retailers€1,379 EUR to €3,629 EUR

A
Cheapest Retailer
-
€1,379 EUR
A
Retailer 2
-
€1,379 EUR
View
A
Retailer 3
-
€1,384 EUR
View
A
Retailer 4
-
€1,443 EUR
View
A
Retailer 5
-
€1,464 EUR
View
Retailer 6
-
€1,488 EUR
View
Price last confirmed 22 days ago
A
Retailer 7
-
€1,488 EUR
View
B+
Retailer 8
-
€1,557 EUR
View
B+
Retailer 9
-
€1,557 EUR
View
B+
Retailer 10
-
€1,610 EUR
View
B+
Retailer 11
-
€1,678 EUR
View
B+
Retailer 12
-
€1,717 EUR
View
B+
Retailer 13
-
€1,816 EUR
View
B+
Retailer 14
-
€2,024 EUR
View
B
Retailer 15
-
€2,606 EUR
View
Most Expensive
C
NZ Jewellers
ebedcac4-57b0-4921-9ad9-c20506f08906 · Nov 5
€3,629 EUR
$4,052 USD
View
15 more retailers have this diamond
Prices start from €1,379 EURSave up to €2,250 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
1.00ct Marquise
€1,379 EUR