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Round|Natural|GIA

0.40ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 7551635560

Certificate GIA 7551635560

Diamond specifications and retailer prices

From £129 GBP
As of November 5, 2026
Save £710 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £839 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 7551635560. Listed at 11 retailers as of November 4, 2026, with prices from £129 to £839, a £710 spread on the same certified stone. NZ Jewellers lists it at £839. 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
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7551635560
Dimensions4.74 × 4.76 × 2.94 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Top View
4.74 mm4.76 mm0.40 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551635560
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
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: Nov 5
Current: £839 GBP|Low: £129 GBP|High: £961 GBP|Avg: £326 GBP|-12.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7£129 GBP
Retailer 9£201 GBP
Retailer 3£218 GBP
Retailer 4£221 GBP
Retailer 11£282 GBP
Retailer 6£285 GBP
Retailer 8£288 GBP
Retailer 10£310 GBP
Retailer 5£317 GBP
Retailer 12£364 GBP
Retailer 2£372 GBP
NZ Jewellers£839 GBP

19 data points across 12 retailers

11 retailers£129 GBP to £839 GBP

A
Cheapest Retailer
-
£129 GBP
A
Retailer 2
-
£201 GBP
View
Retailer 3
-
£218 GBP
View
Price last confirmed 38 days ago
B+
Retailer 4
-
£282 GBP
View
B+
Retailer 5
-
£285 GBP
View
B+
Retailer 6
-
£288 GBP
View
B+
Retailer 7
-
£310 GBP
View
B+
Retailer 8
-
£317 GBP
View
Retailer 9
-
£364 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£372 GBP
View
Most Expensive
B
NZ Jewellers
de79bca4-512a-44b1-97c6-d53e69f4c36f · Nov 4
£839 GBP
$1,129 USD
View
10 more retailers have this diamond
Prices start from £129 GBPSave up to £710 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
£129 GBP