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Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 7491278859

Certificate GIA 7491278859

Diamond specifications and retailer prices

From £220 GBP
₹28,020 INR
As of October 31, 2026
Save £490 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,171 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural heart diamond

This 0.4ct natural heart sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7491278859. Listed at 14 retailers as of October 29, 2026, with a 223% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7491278859
Dimensions4.13 × 5.08 × 3.09 mm
L/W Ratio1.23
Girdle conditionFaceted
Key to symbols
Twinning Wisp
Top View
4.13 mm5.08 mm0.40 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7491278859
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 60.8%

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 31
Current: £220 GBP|Low: £220 GBP|High: £714 GBP|Avg: £417 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 1£220 GBP
Retailer 9£329 GBP
Retailer 10£334 GBP
Retailer 4£378 GBP
Retailer 2£410 GBP
Retailer 7£419 GBP
Retailer 3£463 GBP
Retailer 5£474 GBP
Retailer 8£489 GBP
Retailer 6£710 GBP

38 data points across 10 retailers

14 retailers£220 GBP to £710 GBP

A
Cheapest Retailer
-
£220 GBP
₹28,020 INR
A
Retailer 2
-
£305 GBP
$409 USD
View
A
Retailer 3
-
£329 GBP
$441 USD
View
A
Retailer 4
-
£329 GBP
$441 USD
View
A
Retailer 5
-
£352 GBP
$472 USD
View
A
Retailer 6
-
£352 GBP
$472 USD
View
A
Retailer 7
-
£378 GBP
View
B+
Retailer 8
-
£410 GBP
$550 USD
View
B+
Retailer 9
-
£419 GBP
View
B
Retailer 10
-
£463 GBP
$620 USD
View
B+
Retailer 11
-
£474 GBP
ZAR 10,255 ZAR
View
Retailer 12
-
£489 GBP
A$1,009 AUD
View
Price last confirmed 28 days ago
B
Retailer 13
-
£710 GBP
View
Most Expensive
NZ Jewellers
1889cb0a-ad38-4c53-952e-7d764983da3c · Oct 30
£1,171 GBP
$1,569 USD
View
Price under review
13 more retailers have this diamond
Prices start from £220 GBPSave up to £490 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.

A
0.40ct Heart
£220 GBP