Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 1555893401

Certificate GIA 1555893401

Diamond specifications and retailer prices

From £342 GBP
$458 USD
As of November 1, 2026
Save £447 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,309 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555893401. Listed at 17 retailers as of November 1, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555893401
Dimensions4.87 × 4.79 × 2.86 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Cavity
Top View
4.87 mm4.79 mm0.40 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555893401
Side View
Table 55.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.7%

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: Nov 1
Current: £691 GBP|Low: £368 GBP|High: £798 GBP|Avg: £514 GBP|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9£368 GBP
Retailer 6£424 GBP
Retailer 2£425 GBP
Retailer 7£468 GBP
Retailer 4£496 GBP
Retailer 5£530 GBP
Retailer 8£547 GBP
Retailer 1£691 GBP
Retailer 3£789 GBP

38 data points across 9 retailers

17 retailers£342 GBP to £789 GBP

A
Cheapest Retailer
-
£342 GBP
$458 USD
A
Retailer 2
-
£358 GBP
SGD 648 SGD
View
A
Retailer 3
-
£368 GBP
$493 USD
View
A
Retailer 4
-
£368 GBP
$493 USD
View
B+
Retailer 5
-
£394 GBP
$528 USD
View
B+
Retailer 6
-
£424 GBP
€541 EUR
View
B+
Retailer 7
-
£425 GBP
View
B+
Retailer 8
-
£439 GBP
$589 USD
View
B+
Retailer 9
-
£468 GBP
View
B+
Retailer 10
-
£484 GBP
$649 USD
View
B
Retailer 11
-
£496 GBP
$665 USD
View
B
Retailer 12
-
£525 GBP
$704 USD
View
B+
Retailer 13
-
£530 GBP
ZAR 11,465 ZAR
View
Retailer 14
-
£547 GBP
A$1,128 AUD
View
Price last confirmed 28 days ago
B
Retailer 15
-
£691 GBP
View
B
Retailer 16
-
£789 GBP
View
Most Expensive
NZ Jewellers
244e3689-c213-4b50-81b9-8875e6fa9c9c · Oct 30
£1,309 GBP
$1,754 USD
View
Price under review
16 more retailers have this diamond
Prices start from £342 GBPSave up to £447 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
£342 GBP