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Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 2566480743

Certificate GIA 2566480743

Diamond specifications and retailer prices

From £366 GBP
$490 USD
As of October 31, 2026
Save £226 GBP (38%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £592 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

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 2566480743. Listed at 8 retailers as of October 27, 2026, with prices from £366 to £592, a £226 spread on the same certified stone. Wholesale Diamonds Direct lists it at £592. 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
FluorescenceNone
Crown angle33.42°
Pavilion angle40.04°
OriginNatural
Grading LabGIA
CertificateGIA 2566480743
Dimensions4.46 × 5.04 × 2.95 mm
L/W Ratio1.13
Culet sizeNone
Top View
4.46 mm5.04 mm0.40 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566480743
Side View
Table 60.0%Crown 33.42°Girdle: STK-VTKPavilion 40.04°Culet: NoneDepth 58.6%

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: £484 GBP|Low: £366 GBP|High: £592 GBP|Avg: £463 GBP|+5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 1, 2026
Retailer 5£366 GBP
Retailer 7£396 GBP
Retailer 3£408 GBP
Retailer 6£432 GBP
Retailer 1£484 GBP
Retailer 2£509 GBP
Retailer 4£515 GBP
Wholesale Diamonds Direct£592 GBP

31 data points across 8 retailers

8 retailers£366 GBP to £592 GBP

A
Cheapest Retailer
-
£366 GBP
$490 USD
A
Retailer 2
-
£396 GBP
SGD 717 SGD
View
A
Retailer 3
-
£408 GBP
SGD 738 SGD
View
B+
Retailer 4
-
£432 GBP
$579 USD
View
B+
Retailer 5
-
£484 GBP
View
B
Retailer 6
-
£509 GBP
View
B
Retailer 7
-
£515 GBP
$690 USD
View
Most Expensive
B
Wholesale Diamonds Direct
436499130 · Oct 27
£592 GBP
$793 USD
View
7 more retailers have this diamond
Prices start from £366 GBPSave up to £226 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
£366 GBP