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Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

D/SI1 • GIA 6561480194

Certificate GIA 6561480194

Diamond specifications and retailer prices

From $1,110 AUD
$780 USD
As of October 31, 2026
Save $828 AUD (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,938 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct natural radiant diamond

This 0.4ct natural radiant sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by GIA 6561480194. Listed at 7 retailers as of October 31, 2026, with prices from $1,110 to $1,938, a $828 spread on the same certified stone. MOH London lists it at $1,938. 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
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle46.08°
Pavilion angle57.76°
OriginNatural
Grading LabGIA
CertificateGIA 6561480194
Dimensions3.98 × 3.98 × 2.66 mm
L/W Ratio1.00
Top View
3.98 mm3.98 mm0.40 ctD / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561480194
Side View
Table 65.0%Crown 46.08°GirdlePavilion 57.76°Culet: NoneDepth 66.9%

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 31
Current: $1,938 AUD|Low: $1,110 AUD|High: $1,960 AUD|Avg: $1,362 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6$1,110 AUD
Retailer 2$1,133 AUD
Retailer 5$1,150 AUD
Retailer 7$1,162 AUD
Retailer 3$1,301 AUD
Retailer 4$1,703 AUD
MOH London$1,938 AUD

27 data points across 7 retailers

7 retailers$1,110 AUD to $1,938 AUD

B+
Cheapest Retailer
-
$1,110 AUD
$780 USD
B+
Retailer 2
-
$1,133 AUD
€758 EUR
View
B+
Retailer 3
-
$1,150 AUD
£636 GBP
View
B
Retailer 4
-
$1,162 AUD
$817 USD
View
B
Retailer 5
-
$1,301 AUD
ZAR 14,761 ZAR
View
B
Retailer 6
-
$1,703 AUD
£942 GBP
View
Most Expensive
B
MOH London
21F9397FC · Nov 1
$1,938 AUD
£1,072 GBP
View
6 more retailers have this diamond
Prices start from $1,110 AUDSave up to $828 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 Radiant
$1,110 AUD