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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 $1,974 SGD
As of November 4, 2026
Save $3,219 SGD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,193 SGD 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 $1,974 to $5,193, a $3,219 spread on the same certified stone. NZ Jewellers lists it at $5,193. 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: $5,193 SGD|Low: $1,974 SGD|High: $5,193 SGD|Avg: $2,553 SGD
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$1,974 SGD
Retailer 14$1,974 SGD
Retailer 11$1,980 SGD
Retailer 2$2,065 SGD
Retailer 8$2,095 SGD
Retailer 5$2,129 SGD
Retailer 7$2,129 SGD
Retailer 15$2,227 SGD
Retailer 16$2,227 SGD
Retailer 3$2,303 SGD
Retailer 9$2,402 SGD
Retailer 4$2,457 SGD
Retailer 10$2,598 SGD
Retailer 12$2,896 SGD
Retailer 13$3,729 SGD
NZ Jewellers$5,193 SGD

24 data points across 16 retailers

16 retailers$1,974 SGD to $5,193 SGD

A
Cheapest Retailer
-
$1,974 SGD
A
Retailer 2
-
$1,974 SGD
View
A
Retailer 3
-
$1,980 SGD
View
A
Retailer 4
-
$2,065 SGD
View
A
Retailer 5
-
$2,095 SGD
View
Retailer 6
-
$2,129 SGD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$2,129 SGD
View
B+
Retailer 8
-
$2,227 SGD
View
B+
Retailer 9
-
$2,227 SGD
View
B+
Retailer 10
-
$2,303 SGD
View
B+
Retailer 11
-
$2,402 SGD
View
B+
Retailer 12
-
$2,457 SGD
View
B+
Retailer 13
-
$2,598 SGD
View
B+
Retailer 14
-
$2,896 SGD
View
B
Retailer 15
-
$3,729 SGD
View
Most Expensive
C
NZ Jewellers
ebedcac4-57b0-4921-9ad9-c20506f08906 · Nov 5
$5,193 SGD
$4,052 USD
View
15 more retailers have this diamond
Prices start from $1,974 SGDSave up to $3,219 SGD

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
$1,974 SGD