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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 £228 GBP
$305 USD
As of October 29, 2026
Save £1,064 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,291 GBP 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 29, 2026, with prices from £228 to £1,291, a £1,064 spread on the same certified stone. Brilliant Earth lists it at £1,291. 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
Colour
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £1,291 GBP|Low: £219 GBP|High: £1,291 GBP|Avg: £565 GBP
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 30, 2026
Retailer 13£228 GBP
Retailer 6£255 GBP
Retailer 11£264 GBP
Retailer 10£283 GBP
Retailer 12£283 GBP
Retailer 2£316 GBP
Retailer 4£422 GBP
Retailer 5£460 GBP
Retailer 8£502 GBP
Retailer 7£534 GBP
Retailer 14£724 GBP
Retailer 3£868 GBP
Retailer 15£908 GBP
Retailer 9£1,138 GBP
Brilliant Earth£1,291 GBP

39 data points across 15 retailers

16 retailers£228 GBP to £1,291 GBP

A
Cheapest Retailer
-
£228 GBP
$305 USD
A
Retailer 2
-
£255 GBP
$342 USD
View
Final sale: no returns
A
Retailer 3
-
£264 GBP
$354 USD
View
A
Retailer 4
-
£283 GBP
$379 USD
View
A
Retailer 5
-
£283 GBP
$379 USD
View
A
Retailer 6
-
£316 GBP
View
B+
Retailer 7
-
£419 GBP
$562 USD
View
B+
Retailer 8
-
£422 GBP
$565 USD
View
B+
Retailer 9
-
£460 GBP
$617 USD
View
B+
Retailer 10
-
£502 GBP
View
B+
Retailer 11
-
£534 GBP
$715 USD
View
Retailer 12
-
£724 GBP
$970 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
£868 GBP
$1,163 USD
View
B
Retailer 14
-
£908 GBP
$1,217 USD
View
B
Retailer 15
-
£1,138 GBP
View
Most Expensive
B
Brilliant Earth
16756886A · Oct 29
£1,291 GBP
$1,730 USD
View
15 more retailers have this diamond
Prices start from £228 GBPSave up to £1,064 GBP

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
£228 GBP