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Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

D/SI1 • GIA 6561480194

Certificate GIA 6561480194

Diamond specifications and retailer prices

From £582 GBP
$780 USD
As of October 31, 2026
Save £434 GBP (43%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,016 GBP at MOH London · As of November 1, 2026
View at MOH London

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) and certified by GIA 6561480194. Listed at 7 retailers as of October 31, 2026, with prices from £582 to £1,016, a £434 spread on the same certified stone. MOH London lists it at £1,016. 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
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle46.08°
Pavilion angle57.76°
OriginNatural
Grading LabGIA
CertificateGIA 6561480194
Dimensions3.98 × 3.98 × 2.66 mm
L/W Ratio1.00
Top View
3.98 mm3.98 mm0.40 ctD / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561480194
Side View
Table 65.0%Crown 46.08°GirdlePavilion 57.76°Culet: NoneDepth 66.9%

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 31
Current: £1,016 GBP|Low: £582 GBP|High: £1,027 GBP|Avg: £714 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 6£582 GBP
Retailer 3£594 GBP
Retailer 5£603 GBP
Retailer 7£609 GBP
Retailer 4£682 GBP
Retailer 2£890 GBP
MOH London£1,016 GBP

27 data points across 7 retailers

7 retailers£582 GBP to £1,016 GBP

B+
Cheapest Retailer
-
£582 GBP
$780 USD
B+
Retailer 2
-
£594 GBP
€758 EUR
View
B+
Retailer 3
-
£603 GBP
View
B
Retailer 4
-
£609 GBP
$817 USD
View
B
Retailer 5
-
£682 GBP
ZAR 14,761 ZAR
View
B
Retailer 6
-
£890 GBP
View
Most Expensive
B
MOH London
21F9397FC · Nov 1
£1,016 GBP
View
6 more retailers have this diamond
Prices start from £582 GBPSave up to £434 GBP

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
£582 GBP