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Heart|Natural|IGI

1.31ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 762534772

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534772

Diamond specifications and retailer prices

From HK$17,744 HKD
As of November 6, 2026
Save HK$17,093 HKD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$42,965 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534772. Listed at 16 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

1.31
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 762534772
Dimensions7.00 × 7.70 × 4.32 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
7.00 mm7.70 mm1.31 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534772
Side View
Table 58.0%Crown 34.5°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 56.1%

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$18,136 HKD|Low: HK$17,744 HKD|High: HK$36,436 HKD|Avg: HK$23,384 HKD|-4.3%
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$17,744 HKD
Retailer 10HK$18,026 HKD
Retailer 1HK$18,136 HKD
Retailer 11HK$19,382 HKD
Retailer 3HK$20,550 HKD
Retailer 6HK$20,746 HKD
Retailer 2HK$20,989 HKD
Retailer 7HK$21,153 HKD
Retailer 8HK$24,335 HKD
Retailer 5HK$24,390 HKD
Retailer 9HK$34,837 HKD

43 data points across 11 retailers

16 retailersHK$17,744 HKD to HK$34,837 HKD

A
Cheapest Retailer
-
HK$17,744 HKD
A
Retailer 2
-
HK$18,026 HKD
View
A
Retailer 3
-
HK$18,136 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$19,382 HKD
View
Retailer 5
-
HK$20,550 HKD
View
Price last confirmed 37 days ago
Retailer 6
-
HK$20,550 HKD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
HK$20,746 HKD
View
B+
Retailer 8
-
HK$20,989 HKD
View
A
Retailer 9
-
HK$21,153 HKD
View
Retailer 10
-
HK$21,341 HKD
View
Price last confirmed 37 days ago
Retailer 11
-
HK$23,708 HKD
View
Price last confirmed 62 days ago
Retailer 12
-
HK$23,708 HKD
View
Price last confirmed 39 days ago
B+
Retailer 13
-
HK$24,335 HKD
View
B+
Retailer 14
-
HK$24,390 HKD
View
B
Retailer 15
-
HK$34,837 HKD
View
Most Expensive
NZ Jewellers
5d6ee5f4-fb6c-488f-bf38-66a35693000d · Sep 30
HK$42,965 HKD
$5,482 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from HK$17,744 HKDSave up to HK$17,093 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$17,744 HKD