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Round|Natural|GIA

0.40ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 2417243082

Certificate GIA 2417243082

Diamond specifications and retailer prices

From £150 GBP
As of November 5, 2026
Save £827 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £977 GBP at NZ Jewellers · As of November 4, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2417243082. Listed at 12 retailers as of November 4, 2026, with prices from £150 to £977, a £827 spread on the same certified stone. NZ Jewellers lists it at £977. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2417243082
Dimensions4.83 × 4.80 × 2.84 mm
L/W Ratio1.01
Top View
4.83 mm4.80 mm0.40 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2417243082
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 58.9%

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: Nov 5
Current: £977 GBP|Low: £150 GBP|High: £977 GBP|Avg: £364 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 2£150 GBP
Retailer 6£228 GBP
Retailer 3£270 GBP
Retailer 4£336 GBP
Retailer 5£361 GBP
Retailer 7£371 GBP
NZ Jewellers£977 GBP

44 data points across 7 retailers

12 retailers£150 GBP to £977 GBP

A
Cheapest Retailer
-
£150 GBP
B+
Retailer 2
-
£215 GBP
View
Retailer 3
-
£233 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£241 GBP
View
B+
Retailer 5
-
£249 GBP
View
B+
Retailer 6
-
£270 GBP
View
B+
Retailer 7
-
£291 GBP
View
B+
Retailer 8
-
£312 GBP
View
B
Retailer 9
-
£336 GBP
View
B
Retailer 10
-
£371 GBP
View
B
Retailer 11
-
£383 GBP
View
Most Expensive
C
NZ Jewellers
b8475669-9b78-4cc6-93e6-ca032c67de32 · Nov 4
£977 GBP
$1,315 USD
View
11 more retailers have this diamond
Prices start from £150 GBPSave up to £827 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
£150 GBP