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Round|Lab Grown|IGI

1.57ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG758503526

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758503526

Diamond specifications and retailer prices

From $196 USD
As of October 29, 2026
Save $943 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,139 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.57ct lab-grown round diamond

This 1.57ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758503526 or 758503526. Listed at 12 retailers as of October 26, 2026, with prices from $196 to $1,139, a $943 spread on the same certified stone. MOH London lists it at $1,139. 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

1.57
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758503526
Dimensions7.48 × 7.46 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.46 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758503526
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,139 USD|Low: $186 USD|High: $1,139 USD|Avg: $505 USD|+1.4%
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
October 31, 2026
Retailer 4$196 USD
Retailer 10$225 USD
Retailer 2$240 USD
Retailer 3$243 USD
Retailer 13$408 USD
Retailer 11$419 USD
Retailer 12$438 USD
Retailer 8$483 USD
Retailer 9$500 USD
Retailer 6$773 USD
Retailer 7$776 USD
Retailer 5$920 USD
MOH London$1,139 USD

41 data points across 13 retailers

12 retailers$196 USD to $1,139 USD

A
Cheapest Retailer
-
$196 USD
A
Retailer 2
-
$225 USD
View
A
Retailer 3
-
$240 USD
View
A
Retailer 4
-
$243 USD
View
A
Retailer 5
-
$408 USD
€389 EUR
View
B+
Retailer 6
-
$419 USD
View
A
Retailer 7
-
$438 USD
£345 GBP
View
A
Retailer 8
-
$483 USD
View
A
Retailer 9
-
$500 USD
View
B
Retailer 10
-
$773 USD
View
B+
Retailer 11
-
$776 USD
View
Most Expensive
B
MOH London
LG758503526 · Oct 26
$1,139 USD
£897 GBP
View
11 more retailers have this diamond
Prices start from $196 USDSave up to $943 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.

A
1.57ct Round
$196 USD