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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 $585 CAD
$418 USD
As of October 27, 2026
Save $112 CAD (16%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $697 CAD at Michael Trio · As of October 27, 2026
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 2 retailers as of October 27, 2026, with prices from $585 to $697, a $112 spread on the same certified stone. Michael Trio lists it at $697. 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
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $697 CAD|Low: $495 CAD|High: $717 CAD|Avg: $624 CAD|-2.0%
Michael Trio
Retailer 2
October 17, 2026
Retailer 2$585 CAD
Michael Trio$697 CAD

7 data points across 2 retailers

2 retailers$585 CAD to $697 CAD

B+
Cheapest Retailer
-
$585 CAD
$418 USD
Final sale: no returns
Most Expensive
B+
Michael Trio
2965163893 · Oct 27
$697 CAD
SGD 673 SGD
View
1 more retailer has this diamond
Prices start from $585 CADSave up to $112 CAD

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
$585 CAD