Radiant|Natural|GIA

0.40ct K SI1 Radiant Natural Diamond

K/SI1 • GIA 1226807674

Certificate GIA 1226807674

Diamond specifications and retailer prices

From £218 GBP
As of November 7, 2026
1 retailer carries this diamond
Only listing: £218 GBP at 77 Diamonds
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 77 Diamonds

About this 0.4ct natural radiant diamond

This 0.4ct natural radiant sits in the sub-half-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 1226807674. Listed at a single retailer as of November 7, 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
K
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1226807674
Dimensions4.12 × 4.11 × 3.04 mm
L/W Ratio1.00
Top View
4.12 mm4.11 mm0.40 ctK / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1226807674
Side View
Table 55.0%CrownGirdlePavilionCuletDepth 74.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 7
Current: £218 GBP|Low: £202 GBP|High: £221 GBP|Avg: £210 GBP|+8.2%
November 7, 2026
77 Diamonds£218 GBP

38 data points across 1 retailer

1 retailer

B
77 Diamonds
RADPUIFSXDCEQJHT · Nov 7
£218 GBP
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B
0.40ct Radiant
£218 GBP