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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 HK$12,070 HKD
As of November 4, 2026
Save HK$19,688 HKD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$31,757 HKD 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 HK$12,070 to HK$31,757, a HK$19,688 spread on the same certified stone. NZ Jewellers lists it at HK$31,757. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$31,757 HKD|Low: HK$12,070 HKD|High: HK$31,757 HKD|Avg: HK$15,609 HKD
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 6HK$12,070 HKD
Retailer 12HK$12,109 HKD
Retailer 10HK$12,626 HKD
Retailer 8HK$12,814 HKD
Retailer 5HK$13,018 HKD
Retailer 7HK$13,018 HKD
Retailer 9HK$13,598 HKD
Retailer 15HK$13,621 HKD
Retailer 16HK$13,621 HKD
Retailer 3HK$14,084 HKD
Retailer 2HK$14,687 HKD
Retailer 4HK$15,024 HKD
Retailer 11HK$15,886 HKD
Retailer 13HK$17,713 HKD
Retailer 14HK$22,807 HKD
NZ JewellersHK$31,757 HKD

25 data points across 16 retailers

16 retailersHK$12,070 HKD to HK$31,757 HKD

A
Cheapest Retailer
-
HK$12,070 HKD
A
Retailer 2
-
HK$12,109 HKD
View
A
Retailer 3
-
HK$12,626 HKD
View
A
Retailer 4
-
HK$12,814 HKD
View
Retailer 5
-
HK$13,018 HKD
View
Price last confirmed 22 days ago
A
Retailer 6
-
HK$13,018 HKD
View
A
Retailer 7
-
HK$13,598 HKD
View
B+
Retailer 8
-
HK$13,621 HKD
View
B+
Retailer 9
-
HK$13,621 HKD
View
B+
Retailer 10
-
HK$14,084 HKD
View
B+
Retailer 11
-
HK$14,687 HKD
View
B+
Retailer 12
-
HK$15,024 HKD
View
B+
Retailer 13
-
HK$15,886 HKD
View
B+
Retailer 14
-
HK$17,713 HKD
View
B
Retailer 15
-
HK$22,807 HKD
View
Most Expensive
C
NZ Jewellers
ebedcac4-57b0-4921-9ad9-c20506f08906 · Nov 5
HK$31,757 HKD
$4,052 USD
View
15 more retailers have this diamond
Prices start from HK$12,070 HKDSave up to HK$19,688 HKD

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
HK$12,070 HKD