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Heart|Natural|IGI

1.31ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 788607896

Shape and cutting style on the report: Heart brilliant

Certificate IGI 788607896

Diamond specifications and retailer prices

From HK$11,983 HKD
As of November 6, 2026
Save HK$11,411 HKD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$33,560 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 788607896. Listed at 15 retailers as of November 2, 2026, with a 95% 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39.3°
OriginNatural
Grading LabIGI
CertificateIGI 788607896
Dimensions6.89 × 7.58 × 4.31 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.89 mm7.58 mm1.31 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 788607896
Side View
Table 60.0%Crown 35.4°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 56.9%

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$11,983 HKD|Low: HK$11,983 HKD|High: HK$24,390 HKD|Avg: HK$16,152 HKD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1HK$11,983 HKD
Retailer 9HK$13,598 HKD
Retailer 2HK$13,762 HKD
Retailer 7HK$13,911 HKD
Retailer 10HK$13,982 HKD
Retailer 4HK$14,225 HKD
Retailer 6HK$15,063 HKD
Retailer 5HK$16,294 HKD
Retailer 3HK$17,861 HKD
Retailer 8HK$23,395 HKD

44 data points across 10 retailers

15 retailersHK$11,983 HKD to HK$23,395 HKD

A
Cheapest Retailer
-
HK$11,983 HKD
B+
Retailer 2
-
HK$13,598 HKD
View
Retailer 3
-
HK$13,762 HKD
View
Price last confirmed 36 days ago
Retailer 4
-
HK$13,762 HKD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
HK$13,911 HKD
View
B+
Retailer 6
-
HK$13,982 HKD
View
B+
Retailer 7
-
HK$14,225 HKD
View
Retailer 8
-
HK$14,397 HKD
View
Price last confirmed 36 days ago
B+
Retailer 9
-
HK$15,063 HKD
View
Retailer 10
-
HK$15,879 HKD
View
Price last confirmed 61 days ago
Retailer 11
-
HK$15,879 HKD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
HK$16,294 HKD
View
B+
Retailer 13
-
HK$17,861 HKD
View
B+
Retailer 14
-
HK$23,395 HKD
View
Most Expensive
NZ Jewellers
cb930f5a-9955-4523-ba58-6f6fcdb7c4c6 · Sep 30
HK$33,560 HKD
$4,282 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from HK$11,983 HKDSave up to HK$11,411 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$11,983 HKD