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0.40ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG694537251

Certificate IGI LG694537251

Diamond specifications and retailer prices

From $600 NZD
£266 GBP
As of October 30, 2026
Save $412 NZD (41%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,012 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct lab-grown round diamond

This 0.4ct lab-grown round sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG694537251 or 694537251. Listed at 4 retailers as of October 30, 2026, with prices from $600 to $1,012, a $412 spread on the same certified stone. MOH London lists it at $1,012. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginLab Grown
Grading LabIGI
CertificateIGI LG694537251
Dimensions4.20 × 4.24 × 2.61 mm
L/W Ratio1.01
Top View
4.20 mm4.24 mm0.40 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI LG694537251
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 61.9%

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 30
Current: $1,012 NZD|Low: $600 NZD|High: $1,100 NZD|Avg: $877 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$600 NZD
Retailer 3$704 NZD
Retailer 2$747 NZD
MOH London$1,012 NZD

36 data points across 4 retailers

4 retailers$600 NZD to $1,012 NZD

B+
Cheapest Retailer
-
$600 NZD
£266 GBP
B
Retailer 2
-
$704 NZD
£313 GBP
View
B+
Retailer 3
-
$747 NZD
€401 EUR
View
Most Expensive
B
MOH London
72D80B2F7 · Nov 1
$1,012 NZD
£449 GBP
View
3 more retailers have this diamond
Prices start from $600 NZDSave up to $412 NZD

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
$600 NZD