Heart|Natural|GIA

0.40ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3525322081

Certificate GIA 3525322081

Diamond specifications and retailer prices

From £374 GBP
$501 USD
As of November 1, 2026
Save £206 GBP (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £863 GBP at MOH London · As of November 1, 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 3525322081. Listed at 19 retailers as of October 30, 2026, with a 55% 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

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

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3525322081
Dimensions4.55 × 5.14 × 3.05 mm
L/W Ratio1.13
Top View
4.55 mm5.14 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3525322081
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.3%

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 1
Current: £863 GBP|Low: £374 GBP|High: £1,432 GBP|Avg: £594 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9£374 GBP
Retailer 8£402 GBP
Retailer 11£431 GBP
Retailer 4£433 GBP
Retailer 5£434 GBP
Retailer 6£526 GBP
Retailer 12£536 GBP
Retailer 3£562 GBP
Retailer 7£579 GBP
Retailer 2£756 GBP
MOH London£863 GBP
Retailer 10£1,432 GBP

38 data points across 12 retailers

19 retailers£374 GBP to £579 GBP

Retailer 1
-
£374 GBP
$501 USD
Price last confirmed 25 days ago
B+
Retailer 2
-
£374 GBP
$501 USD
View
B
Retailer 3
-
£402 GBP
$539 USD
View
Retailer 4
-
£402 GBP
$539 USD
View
Price last confirmed 32 days ago
Retailer 5
-
£431 GBP
$578 USD
View
Price last confirmed 24 days ago
B
Retailer 6
-
£431 GBP
$578 USD
View
B
Retailer 7
-
£433 GBP
$580 USD
View
B
Retailer 8
-
£434 GBP
View
B
Retailer 9
-
£472 GBP
$632 USD
View
B
Retailer 10
-
£478 GBP
$641 USD
View
B
Retailer 11
-
£502 GBP
$673 USD
View
B
Retailer 12
-
£526 GBP
$705 USD
View
B
Retailer 13
-
£536 GBP
$718 USD
View
Retailer 14
-
£562 GBP
A$1,158 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
£579 GBP
ZAR 12,543 ZAR
View
Retailer 16
-
£756 GBP
View
Price under review
Most Expensive
MOH London
E78BA61A4 · Nov 1
£863 GBP
View
Price under review
16 more retailers have this diamond
Prices start from £374 GBPSave up to £206 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
£374 GBP