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Round|Natural|GIA

0.40ct L SI1 Round Natural Diamond

VG • L/SI1 • GIA 6401999484

Certificate GIA 6401999484

Diamond specifications and retailer prices

From £161 GBP
As of November 6, 2026
Save £713 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £874 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 very-good cut grade and certified by GIA 6401999484. Listed at 12 retailers as of November 4, 2026, with prices from £161 to £874, a £713 spread on the same certified stone. NZ Jewellers lists it at £874. 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
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6401999484
Dimensions4.66 × 4.64 × 2.96 mm
L/W Ratio1.00
Top View
4.66 mm4.64 mm0.40 ctL / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6401999484
Side View
Table 55.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £874 GBP|Low: £161 GBP|High: £891 GBP|Avg: £314 GBP|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 4£161 GBP
Retailer 14£193 GBP
Retailer 6£195 GBP
Retailer 10£208 GBP
Retailer 11£215 GBP
Retailer 7£240 GBP
Retailer 3£260 GBP
Retailer 13£290 GBP
Retailer 8£300 GBP
Retailer 12£325 GBP
Retailer 5£368 GBP
Retailer 9£374 GBP
Retailer 2£389 GBP
NZ Jewellers£874 GBP

33 data points across 14 retailers

12 retailers£161 GBP to £874 GBP

B+
Cheapest Retailer
-
£161 GBP
B+
Retailer 2
-
£193 GBP
View
Retailer 3
-
£208 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£215 GBP
View
B+
Retailer 5
-
£240 GBP
View
B+
Retailer 6
-
£260 GBP
View
B+
Retailer 7
-
£290 GBP
View
B+
Retailer 8
-
£300 GBP
View
B
Retailer 9
-
£325 GBP
View
B
Retailer 10
-
£374 GBP
View
B
Retailer 11
-
£389 GBP
View
Most Expensive
C
NZ Jewellers
b7a9de3c-90c2-44b8-9759-4068146a5f13 · Nov 4
£874 GBP
$1,177 USD
View
11 more retailers have this diamond
Prices start from £161 GBPSave up to £713 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.

B+
0.40ct Round
£161 GBP