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Round|Natural|GIA

0.40ct L SI1 Round Natural Diamond

EX • L/SI1 • GIA 6442563677

Certificate GIA 6442563677

Diamond specifications and retailer prices

From £176 GBP
As of November 4, 2026
Save £622 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £798 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 6442563677. Listed at 11 retailers as of November 4, 2026, with prices from £176 to £798, a £622 spread on the same certified stone. NZ Jewellers lists it at £798. 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 angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6442563677
Dimensions4.79 × 4.77 × 2.86 mm
L/W Ratio1.00
Top View
4.79 mm4.77 mm0.40 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442563677
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.9%

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 4
Current: £798 GBP|Low: £176 GBP|High: £798 GBP|Avg: £292 GBP
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 9£176 GBP
Retailer 4£186 GBP
Retailer 12£189 GBP
Retailer 11£197 GBP
Retailer 8£230 GBP
Retailer 3£237 GBP
Retailer 6£269 GBP
Retailer 10£273 GBP
Retailer 7£274 GBP
Retailer 5£348 GBP
Retailer 2£354 GBP
NZ Jewellers£798 GBP

43 data points across 12 retailers

11 retailers£176 GBP to £798 GBP

A
Cheapest Retailer
-
£176 GBP
Retailer 2
-
£189 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£197 GBP
View
B+
Retailer 4
-
£230 GBP
View
B+
Retailer 5
-
£237 GBP
View
B+
Retailer 6
-
£269 GBP
View
B+
Retailer 7
-
£273 GBP
View
B+
Retailer 8
-
£274 GBP
View
B
Retailer 9
-
£348 GBP
View
B
Retailer 10
-
£354 GBP
View
Most Expensive
B
NZ Jewellers
9a233b69-61f3-4adb-8481-b0f4735ff657 · Nov 4
£798 GBP
$1,074 USD
View
10 more retailers have this diamond
Prices start from £176 GBPSave up to £622 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
£176 GBP