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Round|Lab Grown|IGI

0.57ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG500143720

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500143720

Diamond specifications and retailer prices

From $330 USD
As of November 5, 2026
Save $1,017 USD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,675 USD at MOH London · As of November 5, 2026
View at MOH London

About this 0.57ct lab-grown round diamond

This 0.57ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG500143720 or 500143720. Listed at 11 retailers as of November 5, 2026, with a 308% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.57
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500143720
Dimensions5.33 × 5.28 × 3.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.33 mm5.28 mm0.57 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500143720
Side View
Table 57.5%Crown 35.3°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.4%

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: $1,675 USD|Low: $324 USD|High: $1,699 USD|Avg: $717 USD|-1.3%
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
Retailer 14
November 5, 2026
Retailer 2$330 USD
Retailer 9$338 USD
Retailer 12$378 USD
Retailer 3$392 USD
Retailer 10$419 USD
Retailer 14$419 USD
Retailer 5$469 USD
Retailer 11$675 USD
Retailer 7$761 USD
Retailer 4$799 USD
Retailer 6$877 USD
Retailer 8$1,229 USD
Retailer 13$1,347 USD
MOH London$1,675 USD

19 data points across 14 retailers

11 retailers$330 USD to $1,347 USD

B+
Cheapest Retailer
-
$330 USD
B+
Retailer 2
-
$338 USD
View
B+
Retailer 3
-
$378 USD
View
Final sale: no returns
B+
Retailer 4
-
$392 USD
View
B+
Retailer 5
-
$419 USD
View
Retailer 6
-
$419 USD
View
Price last confirmed 12 days ago
B
Retailer 7
-
$675 USD
View
Retailer 8
-
$761 USD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$1,229 USD
View
B
Retailer 10
-
$1,347 USD
View
Most Expensive
MOH London
LG500143720 · Nov 5
$1,675 USD
£1,319 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $330 USDSave up to $1,017 USD

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+
0.57ct Round
$330 USD