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Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

GD • D/SI1 • GIA 6555892091

Certificate GIA 6555892091

Diamond specifications and retailer prices

From £372 GBP
SGD 673 SGD
As of October 27, 2026
1 retailer carries this diamond
Only listing: £372 GBP at Michael Trio
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 6555892091. Listed at a single retailer as of October 27, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555892091
Dimensions5.09 × 3.52 × 2.46 mm
L/W Ratio1.45
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.09 mm3.52 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555892091
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.8%

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 27
Current: £372 GBP|Low: £264 GBP|High: £382 GBP|Avg: £333 GBP|-2.0%
Michael Trio
Retailer 2
October 17, 2026
Retailer 2£312 GBP
Michael Trio£372 GBP

7 data points across 2 retailers

1 retailer

B+
Michael Trio
2965163893 · Oct 27
£372 GBP
SGD 673 SGD
View

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B+
0.40ct Radiant
£372 GBP