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Round|Natural|GIA

0.40ct D I1 Round Natural Diamond

EX • D/I1 • GIA 2506709249

Certificate GIA 2506709249

Diamond specifications and retailer prices

From £183 GBP
₹23,352 INR
As of October 30, 2026
Save £799 GBP (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £982 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.4ct natural round diamond

This 0.4ct natural round sits in the sub-half-carat band, graded D colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2506709249. Listed at 9 retailers as of October 30, 2026, with prices from £183 to £982, a £799 spread on the same certified stone. NZ Jewellers lists it at £982. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.40
Carat
D
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506709249
Dimensions4.79 × 4.80 × 2.92 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
4.79 mm4.80 mm0.40 ctD / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2506709249
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.8%

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 30
Current: £982 GBP|Low: £182 GBP|High: £982 GBP|Avg: £385 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2£183 GBP
Retailer 7£256 GBP
Retailer 9£276 GBP
Retailer 5£276 GBP
Retailer 4£286 GBP
Retailer 8£345 GBP
Retailer 6£366 GBP
Retailer 3£476 GBP
NZ Jewellers£982 GBP

45 data points across 9 retailers

9 retailers£183 GBP to £982 GBP

A
Cheapest Retailer
-
£183 GBP
₹23,352 INR
A
Retailer 2
-
£220 GBP
HK$2,300 HKD
View
A
Retailer 3
-
£256 GBP
$343 USD
View
B+
Retailer 4
-
£276 GBP
$370 USD
View
B+
Retailer 5
-
£286 GBP
$383 USD
View
B+
Retailer 6
-
£345 GBP
$462 USD
View
B+
Retailer 7
-
£366 GBP
$490 USD
View
B
Retailer 8
-
£476 GBP
€608 EUR
View
Most Expensive
B
NZ Jewellers
7684139b-5114-4271-a47c-c8f327972272 · Oct 30
£982 GBP
$1,316 USD
View
8 more retailers have this diamond
Prices start from £183 GBPSave up to £799 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 Round
£183 GBP