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Heart|Natural|IGI

1.31ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 762534971

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534971

Diamond specifications and retailer prices

From HK$15,761 HKD
As of November 6, 2026
Save HK$15,283 HKD (49%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$38,168 HKD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534971. Listed at 17 retailers as of November 1, 2026, with a 97% 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

1.31
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.3°
OriginNatural
Grading LabIGI
CertificateIGI 762534971
Dimensions6.88 × 7.55 × 4.41 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.88 mm7.55 mm1.31 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 762534971
Side View
Table 59.0%Crown 36.3°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 58.4%

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$16,098 HKD|Low: HK$15,448 HKD|High: HK$32,368 HKD|Avg: HK$20,657 HKD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 4HK$15,761 HKD
Retailer 1HK$16,098 HKD
Retailer 11HK$17,430 HKD
Retailer 9HK$17,791 HKD
Retailer 3HK$18,261 HKD
Retailer 6HK$18,535 HKD
Retailer 2HK$18,622 HKD
Retailer 7HK$19,288 HKD
Retailer 8HK$21,623 HKD
Retailer 5HK$21,663 HKD
Retailer 10HK$31,044 HKD

43 data points across 11 retailers

17 retailersHK$15,761 HKD to HK$31,044 HKD

A
Cheapest Retailer
-
HK$15,761 HKD
A
Retailer 2
-
HK$16,098 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$17,430 HKD
View
B+
Retailer 4
-
HK$17,791 HKD
View
Retailer 5
-
HK$18,261 HKD
View
Price last confirmed 37 days ago
Retailer 6
-
HK$18,261 HKD
View
Price last confirmed 54 days ago
Retailer 7
-
HK$18,261 HKD
View
Price last confirmed 22 days ago
B+
Retailer 8
-
HK$18,535 HKD
View
B+
Retailer 9
-
HK$18,622 HKD
View
Retailer 10
-
HK$19,100 HKD
View
Price last confirmed 37 days ago
B+
Retailer 11
-
HK$19,288 HKD
View
Retailer 12
-
HK$21,067 HKD
View
Price last confirmed 39 days ago
Retailer 13
-
HK$21,067 HKD
View
Price last confirmed 53 days ago
B+
Retailer 14
-
HK$21,623 HKD
View
B+
Retailer 15
-
HK$21,663 HKD
View
B
Retailer 16
-
HK$31,044 HKD
View
Most Expensive
NZ Jewellers
208ced7d-d4f3-4a98-a242-cb0ea123fedb · Sep 30
HK$38,168 HKD
$4,870 USD
View
Price last confirmed 37 days ago
16 more retailers have this diamond
Prices start from HK$15,761 HKDSave up to HK$15,283 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
1.31ct Heart
HK$15,761 HKD