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Oval|Lab Grown|IGI

1.57ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG451055377

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055377

Diamond specifications and retailer prices

From $830 USD
As of October 29, 2026
Save $3,536 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,366 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055377 or 451055377. Listed at 10 retailers as of October 29, 2026, with prices from $830 to $4,366, a $3,536 spread on the same certified stone. MOH London lists it at $4,366. 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
I
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055377
Dimensions9.13 × 6.57 × 4.10 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.13 mm6.57 mm1.57 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055377
Side View
Table 58.5%Crown 35.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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: $4,366 USD|Low: $830 USD|High: $4,395 USD|Avg: $2,162 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3$830 USD
Retailer 2$1,165 USD
Retailer 6$1,305 USD
Retailer 4$1,352 USD
Retailer 8$1,923 USD
Retailer 5$2,146 USD
Retailer 7$2,664 USD
Retailer 9$3,026 USD
MOH London$4,366 USD

13 data points across 9 retailers

10 retailers$830 USD to $4,366 USD

A
Cheapest Retailer
-
$830 USD
A
Retailer 2
-
$1,165 USD
View
A
Retailer 3
-
$1,268 USD
View
A
Retailer 4
-
$1,305 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,352 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,352 USD
View
B
Retailer 7
-
$2,146 USD
View
B
Retailer 8
-
$2,534 USD
View
B
Retailer 9
-
$2,664 USD
View
Most Expensive
B
MOH London
LG451055377 · Oct 29
$4,366 USD
£3,438 GBP
View
9 more retailers have this diamond
Prices start from $830 USDSave up to $3,536 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 Oval
$830 USD