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Round|Natural|IGI

0.40ct J I1 Round Natural Diamond

VG • J/I1 • IGI 520216522

Shape and cutting style on the report: Round brilliant

Certificate IGI 520216522

Diamond specifications and retailer prices

From £160 GBP
$215 USD
As of October 31, 2026
Save £568 GBP (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £728 GBP at NZ Jewellers · As of October 30, 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 I1 clarity (included), with a very-good cut grade and certified by IGI 520216522. Listed at 7 retailers as of October 30, 2026, with prices from £160 to £728, a £568 spread on the same certified stone. NZ Jewellers lists it at £728. 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
J
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.3°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 520216522
Dimensions4.62 × 4.67 × 2.91 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.62 mm4.67 mm0.40 ctJ / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 520216522
Side View
Table 58.0%Crown 36.3°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 62.6%

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: Oct 31
Current: £281 GBP|Low: £162 GBP|High: £281 GBP|Avg: £223 GBP|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2£164 GBP
Retailer 3£213 GBP
Retailer 4£243 GBP
Retailer 1£281 GBP

19 data points across 4 retailers

7 retailers£160 GBP to £728 GBP

B+
Cheapest Retailer
-
£160 GBP
$215 USD
B+
Retailer 2
-
£173 GBP
$232 USD
View
B+
Retailer 3
-
£179 GBP
$240 USD
View
B+
Retailer 4
-
£213 GBP
$285 USD
View
B+
Retailer 5
-
£216 GBP
$290 USD
View
B
Retailer 6
-
£281 GBP
€358 EUR
View
Most Expensive
C
NZ Jewellers
f3f5f140-cf41-40da-8b61-f666d067c528 · Oct 30
£728 GBP
$976 USD
View
6 more retailers have this diamond
Prices start from £160 GBPSave up to £568 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
£160 GBP