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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 2506686469

Certificate GIA 2506686469

Diamond specifications and retailer prices

From $996 AUD
$700 USD
As of October 28, 2026
Save $1,123 AUD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,449 AUD at NZ Jewellers · As of October 30, 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 2506686469. Listed at 18 retailers as of October 28, 2026, with a 113% 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
FluorescenceFaint
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506686469
Dimensions4.72 × 4.70 × 2.93 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
4.72 mm4.70 mm0.40 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2506686469
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $3,449 AUD|Low: $978 AUD|High: $3,449 AUD|Avg: $1,538 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 15$978 AUD
Retailer 5$996 AUD
Retailer 14$1,014 AUD
Retailer 4$1,018 AUD
Retailer 10$1,053 AUD
Retailer 3$1,253 AUD
Retailer 7$1,253 AUD
Retailer 6$1,295 AUD
Retailer 2$1,315 AUD
Retailer 12$1,401 AUD
Retailer 9$1,426 AUD
Retailer 13$1,663 AUD
Retailer 8$2,025 AUD
Retailer 11$3,177 AUD
NZ Jewellers$3,449 AUD

42 data points across 15 retailers

18 retailers$996 AUD to $2,119 AUD

Retailer 1
-
$978 AUD
$687 USD
Price last confirmed 11 days ago
B+
Retailer 2
-
$996 AUD
$700 USD
View
Retailer 3
-
$1,014 AUD
$712 USD
View
Price last confirmed 75 days ago
B+
Retailer 4
-
$1,018 AUD
$715 USD
View
B+
Retailer 5
-
$1,028 AUD
View
B+
Retailer 6
-
$1,035 AUD
$727 USD
View
B+
Retailer 7
-
$1,053 AUD
$740 USD
View
B+
Retailer 8
-
$1,150 AUD
$808 USD
View
B+
Retailer 9
-
$1,253 AUD
$880 USD
View
B+
Retailer 10
-
$1,253 AUD
$880 USD
View
B+
Retailer 11
-
$1,295 AUD
$910 USD
View
B+
Retailer 12
-
$1,315 AUD
£727 GBP
View
B
Retailer 13
-
$1,401 AUD
$984 USD
View
B
Retailer 14
-
$1,426 AUD
€954 EUR
View
B
Retailer 15
-
$2,025 AUD
£1,120 GBP
View
B
Retailer 16
-
$2,119 AUD
£1,172 GBP
View
Retailer 17
-
$3,177 AUD
CA$3,100 CAD
View
Price under review
Most Expensive
NZ Jewellers
826d9c3a-1e7d-4411-bc46-cdd71cd06b2b · Oct 30
$3,449 AUD
$2,423 USD
View
Price under review
17 more retailers have this diamond
Prices start from $996 AUDSave up to $1,123 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.

B+
0.40ct Round
$996 AUD