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Oval|Lab Grown|IGI

1.57ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG739537722

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG739537722

Diamond specifications and retailer prices

From $305 USD
As of October 26, 2026
Save $1,425 USD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,730 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG739537722 or 739537722. Listed at 16 retailers as of October 26, 2026, with prices from $305 to $1,730, a $1,425 spread on the same certified stone. Brilliant Earth lists it at $1,730. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739537722
Dimensions9.30 × 6.62 × 4.07 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.30 mm6.62 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739537722
Side View
Table 62.0%Crown 33.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.5%

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 26
Current: $1,730 USD|Low: $293 USD|High: $1,730 USD|Avg: $739 USD
Brilliant Earth
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
Retailer 15
October 29, 2026
Retailer 13$305 USD
Retailer 6$342 USD
Retailer 11$354 USD
Retailer 10$379 USD
Retailer 12$379 USD
Retailer 9$424 USD
Retailer 4$565 USD
Retailer 5$617 USD
Retailer 2$671 USD
Retailer 7$715 USD
Retailer 14$970 USD
Retailer 3$1,163 USD
Retailer 15$1,217 USD
Retailer 8$1,525 USD
Brilliant Earth$1,730 USD

39 data points across 15 retailers

16 retailers$305 USD to $1,730 USD

A
Cheapest Retailer
-
$305 USD
A
Retailer 2
-
$342 USD
View
Final sale: no returns
A
Retailer 3
-
$354 USD
View
A
Retailer 4
-
$379 USD
View
A
Retailer 5
-
$379 USD
View
A
Retailer 6
-
$424 USD
£334 GBP
View
B+
Retailer 7
-
$562 USD
View
B+
Retailer 8
-
$565 USD
View
B+
Retailer 9
-
$617 USD
View
B+
Retailer 10
-
$671 USD
£528 GBP
View
B+
Retailer 11
-
$715 USD
View
B
Retailer 12
-
$970 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$1,163 USD
View
B
Retailer 14
-
$1,217 USD
View
B
Retailer 15
-
$1,525 USD
£1,201 GBP
View
Most Expensive
B
Brilliant Earth
16756886A · Oct 29
$1,730 USD
View
15 more retailers have this diamond
Prices start from $305 USDSave up to $1,425 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
$305 USD