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Round|Lab Grown|IGI

0.50ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG400929378

Shape and cutting style on the report: Round brilliant

Certificate IGI LG400929378

Diamond specifications and retailer prices

From $640 NZD
As of November 5, 2026
Save $1,713 NZD (73%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,136 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown round diamond

This 0.5ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG400929378 or 400929378. Listed at 12 retailers as of November 4, 2026, with a 268% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400929378
Dimensions5.01 × 4.97 × 3.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeMedium
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
5.01 mm4.97 mm0.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG400929378
Side View
Table 55.5%Crown 36.5°Girdle: STK-THKPavilion 40.8°Culet: MediumDepth 64.3%

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 5
Current: $3,136 NZD|Low: $429 NZD|High: $3,172 NZD|Avg: $1,298 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5$429 NZD
Retailer 9$640 NZD
Retailer 8$648 NZD
Retailer 12$722 NZD
Retailer 4$751 NZD
Retailer 3$802 NZD
Retailer 10$802 NZD
Retailer 11$1,284 NZD
Retailer 2$1,420 NZD
Retailer 6$1,444 NZD
Retailer 7$2,353 NZD
Retailer 13$2,579 NZD
MOH London$3,136 NZD

43 data points across 13 retailers

12 retailers$640 NZD to $2,353 NZD

B+
Cheapest Retailer
-
$640 NZD
B+
Retailer 2
-
$648 NZD
View
B
Retailer 3
-
$722 NZD
View
Final sale: no returns
B
Retailer 4
-
$751 NZD
View
Retailer 5
-
$802 NZD
View
Price last confirmed 12 days ago
B
Retailer 6
-
$802 NZD
View
B
Retailer 7
-
$1,284 NZD
View
B
Retailer 8
-
$1,420 NZD
View
Retailer 9
-
$1,444 NZD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$2,353 NZD
View
Retailer 11
-
$2,579 NZD
View
Price under review
Most Expensive
MOH London
LG400929378 · Nov 1
$3,136 NZD
£1,388 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $640 NZDSave up to $1,713 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+
0.50ct Round
$640 NZD