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Heart|Natural|GIA

0.40ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 1555940920

Certificate GIA 1555940920

Diamond specifications and retailer prices

From €248 EUR
₹26,382 INR
As of October 26, 2026
Save €541 EUR (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €789 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 0.4ct natural heart diamond

This 0.4ct natural heart sits in the sub-half-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555940920. Listed at 10 retailers as of October 26, 2026, with prices from €248 to €789, a €541 spread on the same certified stone. MOH London lists it at €789. 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

0.40
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555940920
Dimensions4.40 × 5.16 × 3.10 mm
L/W Ratio1.17
Girdle conditionThin to Slightly Thick
Key to symbols
Twinning Wisp, Feather
Top View
4.40 mm5.16 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555940920
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.0%

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: Oct 26
Current: €789 EUR|Low: €247 EUR|High: €1,455 EUR|Avg: €553 EUR|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 4€248 EUR
Retailer 8€298 EUR
Retailer 5€341 EUR
Retailer 10€361 EUR
Retailer 9€373 EUR
Retailer 6€380 EUR
Retailer 2€601 EUR
Retailer 3€693 EUR
MOH London€789 EUR
Retailer 7€1,308 EUR

31 data points across 10 retailers

10 retailers€248 EUR to €789 EUR

A
Cheapest Retailer
-
€248 EUR
₹26,382 INR
A
Retailer 2
-
€298 EUR
HK$2,600 HKD
View
A
Retailer 3
-
€341 EUR
$381 USD
View
B+
Retailer 4
-
€361 EUR
SGD 545 SGD
View
B+
Retailer 5
-
€373 EUR
$417 USD
View
B+
Retailer 6
-
€380 EUR
$425 USD
View
B
Retailer 7
-
€601 EUR
£528 GBP
View
B
Retailer 8
-
€693 EUR
£609 GBP
View
Most Expensive
B
MOH London
AF0E4AFA2 · Oct 26
€789 EUR
£694 GBP
View
8 more retailers have this diamond
Prices start from €248 EURSave up to €541 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.

A
0.40ct Heart
€248 EUR