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Heart|Natural|IGI

1.35ct F SI1 Heart Natural Diamond

EX • F/SI1 • IGI 647429821

Shape and cutting style on the report: Cushion brilliant

Certificate IGI 647429821

Diamond specifications and retailer prices

From HK$28,340 HKD
As of November 5, 2026
Save HK$10,972 HKD (28%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$53,938 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 1.35ct natural heart diamond

This 1.35ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 647429821. Listed at 11 retailers as of November 5, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.35
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle36°
OriginNatural
Grading LabIGI
CertificateIGI 647429821
Dimensions6.77 × 6.07 × 3.91 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Top View
6.77 mm6.07 mm1.35 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 647429821
Side View
Table 60.0%Crown 34.9°Girdle: MED-STKPavilion 36°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$53,938 HKD|Low: HK$27,251 HKD|High: HK$54,515 HKD|Avg: HK$37,660 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7HK$28,340 HKD
Retailer 8HK$29,414 HKD
Retailer 6HK$29,727 HKD
Retailer 3HK$31,240 HKD
Retailer 2HK$33,317 HKD
Retailer 5HK$36,240 HKD
Retailer 4HK$39,312 HKD
Retailer 9HK$53,294 HKD
MOH LondonHK$53,938 HKD

33 data points across 9 retailers

11 retailersHK$28,340 HKD to HK$39,312 HKD

B+
Cheapest Retailer
-
HK$28,340 HKD
Retailer 2
-
HK$29,414 HKD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
HK$29,727 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$30,644 HKD
View
B+
Retailer 5
-
HK$31,240 HKD
View
B+
Retailer 6
-
HK$33,317 HKD
View
B+
Retailer 7
-
HK$33,364 HKD
View
B+
Retailer 8
-
HK$36,240 HKD
View
B+
Retailer 9
-
HK$39,312 HKD
View
Retailer 10
-
HK$53,294 HKD
View
Price last confirmed 29 days ago
Most Expensive
MOH London
05ABB381A · Oct 25
HK$53,938 HKD
£5,419 GBP
View
Price last confirmed 13 days ago
10 more retailers have this diamond
Prices start from HK$28,340 HKDSave up to HK$10,972 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.

B+
1.35ct Heart
HK$28,340 HKD