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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 €3,239 EUR
As of November 5, 2026
Save €1,254 EUR (28%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €6,164 EUR 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €6,164 EUR|Low: €3,114 EUR|High: €6,230 EUR|Avg: €4,304 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 7€3,239 EUR
Retailer 8€3,361 EUR
Retailer 6€3,397 EUR
Retailer 3€3,570 EUR
Retailer 2€3,807 EUR
Retailer 5€4,142 EUR
Retailer 4€4,493 EUR
Retailer 9€6,090 EUR
MOH London€6,164 EUR

33 data points across 9 retailers

11 retailers€3,239 EUR to €4,493 EUR

B+
Cheapest Retailer
-
€3,239 EUR
Retailer 2
-
€3,361 EUR
View
Price last confirmed 12 days ago
B+
Retailer 3
-
€3,397 EUR
View
Final sale: no returns
B+
Retailer 4
-
€3,502 EUR
View
B+
Retailer 5
-
€3,570 EUR
View
B+
Retailer 6
-
€3,807 EUR
View
B+
Retailer 7
-
€3,813 EUR
View
B+
Retailer 8
-
€4,142 EUR
View
B+
Retailer 9
-
€4,493 EUR
View
Retailer 10
-
€6,090 EUR
View
Price last confirmed 29 days ago
Most Expensive
MOH London
05ABB381A · Oct 25
€6,164 EUR
£5,419 GBP
View
Price last confirmed 13 days ago
10 more retailers have this diamond
Prices start from €3,239 EURSave up to €1,254 EUR

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
€3,239 EUR