CaratHunter
Plans
Oval|Lab Grown|IGI

1.57ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG839603313

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG839603313

Diamond specifications and retailer prices

From £173 GBP
$232 USD
As of October 29, 2026
Save £722 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £896 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 LG839603313 or 839603313. Listed at 10 retailers as of October 29, 2026, with prices from £173 to £896, a £722 spread on the same certified stone. Brilliant Earth lists it at £896. 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 angle31.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839603313
Dimensions9.68 × 6.64 × 4.04 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.68 mm6.64 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839603313
Side View
Table 58.0%Crown 31.9°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £896 GBP|Low: £166 GBP|High: £918 GBP|Avg: £514 GBP|-2.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 5£173 GBP
Retailer 9£201 GBP
Retailer 4£239 GBP
Retailer 7£363 GBP
Retailer 10£410 GBP
Retailer 6£685 GBP
Retailer 8£690 GBP
Retailer 3£694 GBP
Retailer 2£864 GBP
Brilliant Earth£896 GBP

16 data points across 10 retailers

10 retailers£173 GBP to £896 GBP

A
Cheapest Retailer
-
£173 GBP
$232 USD
A
Retailer 2
-
£201 GBP
$269 USD
View
A
Retailer 3
-
£239 GBP
HK$2,500 HKD
View
B+
Retailer 4
-
£363 GBP
$486 USD
View
B+
Retailer 5
-
£410 GBP
$549 USD
View
B
Retailer 6
-
£685 GBP
SGD 1,241 SGD
View
B
Retailer 7
-
£690 GBP
$924 USD
View
Retailer 8
-
£694 GBP
$930 USD
View
Price last confirmed 12 days ago
B
Retailer 9
-
£864 GBP
View
Most Expensive
B
Brilliant Earth
21471937A · Oct 29
£896 GBP
$1,200 USD
View
9 more retailers have this diamond
Prices start from £173 GBPSave up to £722 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
£173 GBP