Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

GD • D/SI1 • GIA 6551725056

Certificate GIA 6551725056

Diamond specifications and retailer prices

From $532 USD
SGD 719 SGD
As of October 27, 2026
2 retailers carry this diamond
Most expensive: $532 USD at Michael Trio
View at Michael Trio

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), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551725056. Listed at 2 retailers as of October 27, 2026. 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
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551725056
Dimensions4.98 × 3.57 × 2.44 mm
L/W Ratio1.39
Culet sizeNone
Key to symbols
Crystal
Top View
4.98 mm3.57 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551725056
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 27
Current: $532 USD|Low: $379 USD|High: $546 USD|Avg: $476 USD|-2.6%
Michael Trio
Retailer 2
Retailer 3
October 18, 2026
Retailer 3$446 USD
Retailer 2$465 USD
Michael Trio$532 USD

5 data points across 3 retailers

2 retailers

Retailer 1
-
$465 USD
Price last confirmed 12 days ago
Most Expensive
B+
Michael Trio
1836288692 · Oct 27
$532 USD
SGD 719 SGD
View
1 more retailer has this diamond

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
$532 USD