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Heart|Natural|GIA

0.40ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 5526276519

Certificate GIA 5526276519

Diamond specifications and retailer prices

From £344 GBP
As of November 2, 2026
Save £271 GBP (44%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £615 GBP at MOH London · As of October 29, 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 5526276519. Listed at 5 retailers as of October 29, 2026, with prices from £344 to £615, a £271 spread on the same certified stone. MOH London lists it at £615. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5526276519
Dimensions4.61 × 5.01 × 2.88 mm
L/W Ratio1.09
Top View
4.61 mm5.01 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5526276519
Side View
Table 61.0%CrownGirdle: UNDPavilionCuletDepth 57.4%

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 2
Current: £615 GBP|Low: £321 GBP|High: £619 GBP|Avg: £435 GBP|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 2£344 GBP
Retailer 6£381 GBP
Retailer 5£384 GBP
Retailer 4£424 GBP
Retailer 3£489 GBP
MOH London£615 GBP

45 data points across 6 retailers

5 retailers£344 GBP to £615 GBP

B+
Cheapest Retailer
-
£344 GBP
B
Retailer 2
-
£384 GBP
$515 USD
View
Retailer 3
-
£424 GBP
A$876 AUD
View
Price last confirmed 29 days ago
B
Retailer 4
-
£489 GBP
€625 EUR
View
Most Expensive
C
MOH London
D480985E5 · Oct 29
£615 GBP
View
4 more retailers have this diamond
Prices start from £344 GBPSave up to £271 GBP

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+
0.40ct Heart
£344 GBP