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Radiant|Natural|GIA

0.40ct D SI1 Radiant Natural Diamond

VG • D/SI1 • GIA 5553819239

Certificate GIA 5553819239

Diamond specifications and retailer prices

From £315 GBP
$422 USD
As of October 29, 2026
Save £866 GBP (73%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,181 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 5553819239. Listed at 20 retailers as of October 29, 2026, with prices from £315 to £1,181, a £866 spread on the same certified stone. NZ Jewellers lists it at £1,181. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle43.6°
Pavilion angle59.12°
OriginNatural
Grading LabGIA
CertificateGIA 5553819239
Dimensions5.32 × 3.60 × 2.47 mm
L/W Ratio1.48
Girdle conditionPolished
Culet sizeNone
Top View
5.32 mm3.60 mm0.40 ctD / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553819239
Side View
Table 69.0%Crown 43.6°Girdle: MED-STKPavilion 59.12°Culet: NoneDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,181 GBP|Low: £315 GBP|High: £1,220 GBP|Avg: £515 GBP|-3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 5£315 GBP
Retailer 16£317 GBP
Retailer 19£341 GBP
Retailer 11£346 GBP
Retailer 9£353 GBP
Retailer 6£367 GBP
Retailer 8£367 GBP
Retailer 18£393 GBP
Retailer 15£406 GBP
Retailer 3£422 GBP
Retailer 13£471 GBP
Retailer 7£496 GBP
Retailer 14£509 GBP
Retailer 17£516 GBP
Retailer 4£557 GBP
Retailer 2£584 GBP
Retailer 12£764 GBP
Retailer 10£871 GBP
NZ Jewellers£1,181 GBP

24 data points across 19 retailers

20 retailers£315 GBP to £1,181 GBP

A
Cheapest Retailer
-
£315 GBP
$422 USD
Final sale: no returns
A
Retailer 2
-
£317 GBP
$425 USD
View
A
Retailer 3
-
£341 GBP
$457 USD
View
A
Retailer 4
-
£346 GBP
$463 USD
View
A
Retailer 5
-
£353 GBP
HK$3,700 HKD
View
A
Retailer 6
-
£367 GBP
$492 USD
View
A
Retailer 7
-
£367 GBP
$492 USD
View
A
Retailer 8
-
£393 GBP
$527 USD
View
A
Retailer 9
-
£406 GBP
$544 USD
View
B+
Retailer 10
-
£422 GBP
$565 USD
View
B+
Retailer 11
-
£471 GBP
View
B+
Retailer 12
-
£496 GBP
$665 USD
View
B+
Retailer 13
-
£509 GBP
€650 EUR
View
B+
Retailer 14
-
£516 GBP
View
B
Retailer 15
-
£557 GBP
$747 USD
View
B+
Retailer 16
-
£584 GBP
ZAR 12,637 ZAR
View
Retailer 17
-
£588 GBP
A$1,212 AUD
View
Price last confirmed 27 days ago
B
Retailer 18
-
£764 GBP
View
B
Retailer 19
-
£871 GBP
View
Most Expensive
B
NZ Jewellers
34423ff2-a5cd-42e0-bc7d-7bf317eff36b · Oct 30
£1,181 GBP
$1,582 USD
View
19 more retailers have this diamond
Prices start from £315 GBPSave up to £866 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.

A
0.40ct Radiant
£315 GBP