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Heart|Natural|GIA

0.40ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 1555893401

Certificate GIA 1555893401

Diamond specifications and retailer prices

From $652 AUD
$458 USD
As of November 1, 2026
Save $852 AUD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,497 AUD 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: $1,319 AUD|Low: $702 AUD|High: $1,522 AUD|Avg: $980 AUD|-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$702 AUD
Retailer 6$809 AUD
Retailer 2$811 AUD
Retailer 7$893 AUD
Retailer 4$947 AUD
Retailer 5$1,010 AUD
Retailer 8$1,044 AUD
Retailer 1$1,319 AUD
Retailer 3$1,504 AUD

38 data points across 9 retailers

17 retailers$652 AUD to $1,504 AUD

A
Cheapest Retailer
-
$652 AUD
$458 USD
A
Retailer 2
-
$683 AUD
SGD 648 SGD
View
A
Retailer 3
-
$702 AUD
$493 USD
View
A
Retailer 4
-
$702 AUD
$493 USD
View
B+
Retailer 5
-
$752 AUD
$528 USD
View
B+
Retailer 6
-
$809 AUD
€541 EUR
View
B+
Retailer 7
-
$811 AUD
£449 GBP
View
B+
Retailer 8
-
$838 AUD
$589 USD
View
B+
Retailer 9
-
$893 AUD
£494 GBP
View
B+
Retailer 10
-
$923 AUD
$649 USD
View
B
Retailer 11
-
$947 AUD
$665 USD
View
B
Retailer 12
-
$1,002 AUD
$704 USD
View
B+
Retailer 13
-
$1,010 AUD
ZAR 11,465 ZAR
View
Retailer 14
-
$1,044 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$1,319 AUD
£729 GBP
View
B
Retailer 16
-
$1,504 AUD
£832 GBP
View
Most Expensive
NZ Jewellers
244e3689-c213-4b50-81b9-8875e6fa9c9c · Oct 30
$2,497 AUD
$1,754 USD
View
Price under review
16 more retailers have this diamond
Prices start from $652 AUDSave up to $852 AUD

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
$652 AUD