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Round|Natural|GIA

0.40ct D SI2 Round Natural Diamond

VG • D/SI2 • GIA 2506051045

Certificate GIA 2506051045

Diamond specifications and retailer prices

From £232 GBP
₹29,367 INR
As of October 23, 2026
Save £1,001 GBP (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,232 GBP at NZ Jewellers · As of October 23, 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2506051045. Listed at 17 retailers as of October 23, 2026, with prices from £232 to £1,232, a £1,001 spread on the same certified stone. NZ Jewellers lists it at £1,232. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2506051045
Dimensions4.66 × 4.63 × 2.95 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
4.66 mm4.63 mm0.40 ctD / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2506051045
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 41.6°Culet: NoneDepth 63.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 23
Current: £1,232 GBP|Low: £231 GBP|High: £1,232 GBP|Avg: £534 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 24, 2026
Retailer 3£232 GBP
Retailer 4£327 GBP
Retailer 8£353 GBP
Retailer 7£371 GBP
Retailer 2£377 GBP
Retailer 9£421 GBP
Retailer 6£518 GBP
Retailer 5£747 GBP
NZ Jewellers£1,232 GBP

40 data points across 9 retailers

17 retailers£232 GBP to £1,232 GBP

A
Cheapest Retailer
-
£232 GBP
₹29,367 INR
A
Retailer 2
-
£269 GBP
HK$2,800 HKD
View
A
Retailer 3
-
£321 GBP
$428 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£327 GBP
$435 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£333 GBP
A$683 AUD
View
A
Retailer 6
-
£337 GBP
SGD 606 SGD
View
A
Retailer 7
-
£346 GBP
$461 USD
View
A
Retailer 8
-
£346 GBP
$461 USD
View
Price last confirmed 7 days ago
A
Retailer 9
-
£371 GBP
$494 USD
View
Price last confirmed 7 days ago
A
Retailer 10
-
£371 GBP
$494 USD
View
A
Retailer 11
-
£377 GBP
View
B+
Retailer 12
-
£420 GBP
$559 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£421 GBP
$561 USD
View
B+
Retailer 14
-
£518 GBP
€657 EUR
View
B
Retailer 15
-
£747 GBP
View
Price last confirmed 8 days ago
B
Retailer 16
-
£810 GBP
View
Most Expensive
B
NZ Jewellers
d816b04e-4f52-4df4-971c-31cbc72347d4 · Oct 23
£1,232 GBP
$1,641 USD
View
16 more retailers have this diamond
Prices start from £232 GBPSave up to £1,001 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
£232 GBP