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Heart|Natural|IGI

1.51ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 803629052

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629052

Diamond specifications and retailer prices

From HK$16,811 HKD
As of November 6, 2026
Save HK$16,184 HKD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$40,692 HKD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629052. Listed at 14 retailers as of November 4, 2026, with a 96% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle42.8°
OriginNatural
Grading LabIGI
CertificateIGI 803629052
Dimensions6.71 × 7.91 × 4.92 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.71 mm7.91 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629052
Side View
Table 60.0%Crown 37.2°Girdle: MED-THKPavilion 42.8°Culet: NoneDepth 62.2%

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 6
Current: HK$16,811 HKD|Low: HK$16,811 HKD|High: HK$34,516 HKD|Avg: HK$21,498 HKD|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1HK$16,811 HKD
Retailer 6HK$17,086 HKD
Retailer 7HK$18,520 HKD
Retailer 9HK$19,468 HKD
Retailer 2HK$19,695 HKD
Retailer 8HK$19,868 HKD
Retailer 3HK$20,032 HKD
Retailer 4HK$23,050 HKD
Retailer 5HK$32,995 HKD

43 data points across 9 retailers

14 retailersHK$16,811 HKD to HK$32,995 HKD

A
Cheapest Retailer
-
HK$16,811 HKD
A
Retailer 2
-
HK$17,086 HKD
View
B+
Retailer 3
-
HK$18,520 HKD
View
Retailer 4
-
HK$19,468 HKD
View
Price last confirmed 36 days ago
Retailer 5
-
HK$19,468 HKD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
HK$19,695 HKD
View
B+
Retailer 7
-
HK$19,868 HKD
View
A
Retailer 8
-
HK$20,032 HKD
View
Retailer 9
-
HK$20,362 HKD
View
Price last confirmed 36 days ago
Retailer 10
-
HK$22,462 HKD
View
Price last confirmed 61 days ago
Retailer 11
-
HK$22,462 HKD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
HK$23,050 HKD
View
B
Retailer 13
-
HK$32,995 HKD
View
Most Expensive
NZ Jewellers
bebea34d-aa10-4dfc-9a6a-812814e66304 · Sep 30
HK$40,692 HKD
$5,192 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from HK$16,811 HKDSave up to HK$16,184 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
1.51ct Heart
HK$16,811 HKD