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Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

GD • D/SI1 • GIA 6551725056

Certificate GIA 6551725056

Diamond specifications and retailer prices

From $680 SGD
As of October 27, 2026
2 retailers carry this diamond
Most expensive: $680 SGD 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
Colour
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

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 27
Current: $680 SGD|Low: $485 SGD|High: $698 SGD|Avg: $609 SGD|-2.6%
Michael Trio
Retailer 2
Retailer 3
October 18, 2026
Retailer 3$570 SGD
Retailer 2$594 SGD
Michael Trio$680 SGD

5 data points across 3 retailers

2 retailers

Retailer 1
-
$594 SGD
$465 USD
Price last confirmed 13 days ago
Most Expensive
B+
Michael Trio
1836288692 · Oct 27
$680 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
$680 SGD