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Round|Natural|GIA

0.40ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5563420190

Certificate GIA 5563420190

Diamond specifications and retailer prices

From £165 GBP
₹21,065 INR
As of October 30, 2026
Save £721 GBP (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £886 GBP at NZ Jewellers · As of October 26, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5563420190. Listed at 13 retailers as of October 26, 2026, with prices from £165 to £886, a £721 spread on the same certified stone. NZ Jewellers lists it at £886. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5563420190
Dimensions4.72 × 4.70 × 2.96 mm
L/W Ratio1.00
Top View
4.72 mm4.70 mm0.40 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563420190
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: Oct 30
Current: £886 GBP|Low: £165 GBP|High: £911 GBP|Avg: £384 GBP|-2.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2£165 GBP
Retailer 4£201 GBP
Retailer 10£245 GBP
Retailer 9£294 GBP
Retailer 3£295 GBP
Retailer 12£311 GBP
Retailer 6£327 GBP
Retailer 5£357 GBP
Retailer 8£388 GBP
Retailer 7£467 GBP
Retailer 11£539 GBP
NZ Jewellers£886 GBP

23 data points across 12 retailers

13 retailers£165 GBP to £886 GBP

A
Cheapest Retailer
-
£165 GBP
₹21,065 INR
A
Retailer 2
-
£201 GBP
HK$2,100 HKD
View
A
Retailer 3
-
£245 GBP
SGD 444 SGD
View
A
Retailer 4
-
£294 GBP
View
A
Retailer 5
-
£295 GBP
$395 USD
View
Retailer 6
-
£311 GBP
$417 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£327 GBP
$439 USD
View
B+
Retailer 8
-
£357 GBP
ZAR 7,720 ZAR
View
Retailer 9
-
£384 GBP
A$791 AUD
View
Price last confirmed 26 days ago
B+
Retailer 10
-
£388 GBP
€495 EUR
View
B+
Retailer 11
-
£467 GBP
View
B
Retailer 12
-
£539 GBP
View
Most Expensive
B
NZ Jewellers
25efe026-9344-411f-b6c9-ec32a516d6bd · Oct 26
£886 GBP
$1,187 USD
View
12 more retailers have this diamond
Prices start from £165 GBPSave up to £721 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
£165 GBP