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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 5456367431

Certificate GIA 5456367431

Diamond specifications and retailer prices

From $637 AUD
₹42,605 INR
As of October 30, 2026
Save $1,370 AUD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,720 AUD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.4ct natural round diamond

This 0.4ct natural round sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5456367431. Listed at 19 retailers as of October 26, 2026, with a 215% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5456367431
Dimensions4.70 × 4.67 × 2.93 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
4.70 mm4.67 mm0.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5456367431
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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 30
Current: $637 AUD|Low: $633 AUD|High: $2,028 AUD|Avg: $1,229 AUD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 1$637 AUD
Retailer 7$861 AUD
Retailer 6$934 AUD
Retailer 8$1,016 AUD
Retailer 3$1,061 AUD
Retailer 4$1,164 AUD
Retailer 2$1,790 AUD
Retailer 5$2,007 AUD

39 data points across 8 retailers

19 retailers$637 AUD to $2,007 AUD

A
Cheapest Retailer
-
$637 AUD
₹42,605 INR
A
Retailer 2
-
$821 AUD
$577 USD
View
A
Retailer 3
-
$840 AUD
View
Retailer 4
-
$861 AUD
$605 USD
View
Price last confirmed 9 days ago
Retailer 5
-
$867 AUD
$609 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$867 AUD
$609 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$934 AUD
$656 USD
View
Retailer 8
-
$934 AUD
$656 USD
View
Price last confirmed 15 days ago
Retailer 9
-
$934 AUD
$656 USD
View
Price last confirmed 14 days ago
Retailer 10
-
$1,001 AUD
$703 USD
View
Price last confirmed 32 days ago
B+
Retailer 11
-
$1,001 AUD
$703 USD
View
B+
Retailer 12
-
$1,016 AUD
$714 USD
View
B+
Retailer 13
-
$1,055 AUD
$741 USD
View
B+
Retailer 14
-
$1,061 AUD
£587 GBP
View
B+
Retailer 15
-
$1,164 AUD
€779 EUR
View
B
Retailer 16
-
$1,790 AUD
£990 GBP
View
B
Retailer 17
-
$1,973 AUD
£1,092 GBP
View
B
Retailer 18
-
$2,007 AUD
£1,110 GBP
View
Most Expensive
NZ Jewellers
5f8e821a-2582-4591-bcb1-9fc852f568de · Sep 24
$2,720 AUD
$1,911 USD
View
Price last confirmed 36 days ago
18 more retailers have this diamond
Prices start from $637 AUDSave up to $1,370 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 Round
$637 AUD