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Heart|Natural|IGI

0.90ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 818638390

Shape and cutting style on the report: Heart brilliant

Certificate IGI 818638390

Diamond specifications and retailer prices

From HK$6,113 HKD
As of November 6, 2026
Save HK$17,470 HKD (74%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$23,583 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 818638390. Listed at 12 retailers as of November 5, 2026, with prices from HK$6,113 to HK$23,583, a HK$17,470 spread on the same certified stone. NZ Jewellers lists it at HK$23,583. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 818638390
Dimensions5.86 × 6.43 × 4.10 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
5.86 mm6.43 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 818638390
Side View
Table 57.0%Crown 39.7°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.8%

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 6
Current: HK$23,583 HKD|Low: HK$6,113 HKD|High: HK$23,583 HKD|Avg: HK$10,324 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2HK$6,113 HKD
Retailer 6HK$7,516 HKD
Retailer 10HK$7,524 HKD
Retailer 8HK$7,806 HKD
Retailer 5HK$8,676 HKD
Retailer 4HK$10,761 HKD
Retailer 7HK$11,012 HKD
Retailer 9HK$13,755 HKD
Retailer 3HK$14,389 HKD
NZ JewellersHK$23,583 HKD

39 data points across 10 retailers

12 retailersHK$6,113 HKD to HK$23,583 HKD

A
Cheapest Retailer
-
HK$6,113 HKD
B+
Retailer 2
-
HK$7,516 HKD
View
B+
Retailer 3
-
HK$7,524 HKD
View
B+
Retailer 4
-
HK$7,806 HKD
View
B+
Retailer 5
-
HK$8,558 HKD
View
B+
Retailer 6
-
HK$8,676 HKD
View
B+
Retailer 7
-
HK$8,770 HKD
View
B
Retailer 8
-
HK$10,761 HKD
View
B
Retailer 9
-
HK$11,012 HKD
View
B
Retailer 10
-
HK$13,755 HKD
View
B
Retailer 11
-
HK$14,389 HKD
View
Most Expensive
C
NZ Jewellers
44d00f5c-79bb-4548-a36f-0451d9eb35a0 · Nov 5
HK$23,583 HKD
$3,009 USD
View
11 more retailers have this diamond
Prices start from HK$6,113 HKDSave up to HK$17,470 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
0.90ct Heart
HK$6,113 HKD