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1.57ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG476157423

Shape and cutting style on the report: Round brilliant

Certificate IGI LG476157423

Diamond specifications and retailer prices

From $1,150 USD
As of October 29, 2026
Save $3,441 USD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,591 USD at MOH London · As of October 29, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG476157423 or 476157423. Listed at 10 retailers as of October 29, 2026, with prices from $1,150 to $4,591, a $3,441 spread on the same certified stone. MOH London lists it at $4,591. 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG476157423
Dimensions7.37 × 7.33 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.37 mm7.33 mm1.57 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG476157423
Side View
Table 56.5%Crown 35.9°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
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: $4,591 USD|Low: $1,150 USD|High: $4,628 USD|Avg: $2,501 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2$1,150 USD
Retailer 4$1,543 USD
Retailer 7$1,800 USD
Retailer 6$2,189 USD
Retailer 3$2,526 USD
Retailer 5$2,902 USD
Retailer 8$3,580 USD
MOH London$4,591 USD

13 data points across 8 retailers

10 retailers$1,150 USD to $4,591 USD

A
Cheapest Retailer
-
$1,150 USD
B+
Retailer 2
-
$1,378 USD
View
B+
Retailer 3
-
$1,500 USD
View
B+
Retailer 4
-
$1,543 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,599 USD
View
Retailer 6
-
$1,599 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,526 USD
View
B
Retailer 8
-
$2,902 USD
View
B
Retailer 9
-
$2,997 USD
View
Most Expensive
B
MOH London
LG476157423 · Oct 29
$4,591 USD
£3,615 GBP
View
9 more retailers have this diamond
Prices start from $1,150 USDSave up to $3,441 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
$1,150 USD