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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 $2,241 AUD
As of November 4, 2026
Save $3,656 AUD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $5,897 AUD 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 4, 2026, with prices from $2,241 to $5,897, a $3,656 spread on the same certified stone. NZ Jewellers lists it at $5,897. 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

How it works →
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: $5,897 AUD|Low: $2,241 AUD|High: $5,897 AUD|Avg: $2,899 AUD
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 7, 2026
Retailer 6$2,241 AUD
Retailer 12$2,249 AUD
Retailer 10$2,345 AUD
Retailer 8$2,380 AUD
Retailer 5$2,417 AUD
Retailer 7$2,417 AUD
Retailer 9$2,525 AUD
Retailer 15$2,529 AUD
Retailer 16$2,529 AUD
Retailer 3$2,615 AUD
Retailer 2$2,727 AUD
Retailer 4$2,790 AUD
Retailer 11$2,950 AUD
Retailer 13$3,289 AUD
Retailer 14$4,235 AUD
NZ Jewellers$5,897 AUD

25 data points across 16 retailers

16 retailers$2,241 AUD to $5,897 AUD

A
Cheapest Retailer
-
$2,241 AUD
A
Retailer 2
-
$2,249 AUD
View
A
Retailer 3
-
$2,345 AUD
View
A
Retailer 4
-
$2,380 AUD
View
Retailer 5
-
$2,417 AUD
View
Price last confirmed 22 days ago
A
Retailer 6
-
$2,417 AUD
View
A
Retailer 7
-
$2,525 AUD
View
B+
Retailer 8
-
$2,529 AUD
View
B+
Retailer 9
-
$2,529 AUD
View
B+
Retailer 10
-
$2,615 AUD
View
B+
Retailer 11
-
$2,727 AUD
View
B+
Retailer 12
-
$2,790 AUD
View
B+
Retailer 13
-
$2,950 AUD
View
B+
Retailer 14
-
$3,289 AUD
View
B
Retailer 15
-
$4,235 AUD
View
Most Expensive
C
NZ Jewellers
ebedcac4-57b0-4921-9ad9-c20506f08906 · Nov 5
$5,897 AUD
$4,052 USD
View
15 more retailers have this diamond
Prices start from $2,241 AUDSave up to $3,656 AUD

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
$2,241 AUD