Princess|Natural|GIA

0.40ct D SI1 Princess Natural Diamond

GD • D/SI1 • GIA 1413991728

Certificate GIA 1413991728

Diamond specifications and retailer prices

From £413 GBP
$553 USD
As of October 29, 2026
Save £520 GBP (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,295 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural princess diamond

This 0.4ct natural princess 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 1413991728. Listed at 14 retailers as of October 26, 2026, with a 126% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1413991728
Dimensions3.89 × 3.87 × 3.01 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
3.89 mm3.87 mm0.40 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1413991728
Side View
Table 69.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 77.8%

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 29
Current: £490 GBP|Low: £457 GBP|High: £943 GBP|Avg: £599 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 8£461 GBP
Retailer 4£478 GBP
Retailer 1£490 GBP
Retailer 5£566 GBP
Retailer 2£614 GBP
Retailer 7£621 GBP
Retailer 3£640 GBP
Retailer 6£933 GBP

43 data points across 8 retailers

14 retailers£413 GBP to £933 GBP

B+
Cheapest Retailer
-
£413 GBP
$553 USD
B
Retailer 2
-
£445 GBP
$596 USD
View
B
Retailer 3
-
£445 GBP
$596 USD
View
B
Retailer 4
-
£476 GBP
$638 USD
View
B
Retailer 5
-
£478 GBP
$640 USD
View
B
Retailer 6
-
£490 GBP
View
B
Retailer 7
-
£507 GBP
View
B
Retailer 8
-
£511 GBP
$685 USD
View
B
Retailer 9
-
£566 GBP
View
B
Retailer 10
-
£614 GBP
€784 EUR
View
Retailer 11
-
£621 GBP
A$1,280 AUD
View
Price last confirmed 27 days ago
B
Retailer 12
-
£640 GBP
ZAR 13,860 ZAR
View
B
Retailer 13
-
£933 GBP
View
Most Expensive
NZ Jewellers
f53cce0e-e390-460f-91e3-519bb67733cc · Oct 30
£1,295 GBP
$1,735 USD
View
Price under review
13 more retailers have this diamond
Prices start from £413 GBPSave up to £520 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 Princess
£413 GBP