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Oval|Lab Grown|IGI

1.57ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG773631420

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG773631420

Diamond specifications and retailer prices

From £248 GBP
$332 USD
As of October 30, 2026
Save £624 GBP (72%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £872 GBP at MOH London · As of October 26, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG773631420 or 773631420. Listed at 7 retailers as of October 26, 2026, with prices from £248 to £872, a £624 spread on the same certified stone. MOH London lists it at £872. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773631420
Dimensions9.67 × 6.37 × 4.06 mm
L/W Ratio1.52
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.67 mm6.37 mm1.57 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773631420
Side View
Table 60.0%Crown 33.7°Girdle: THN-STKPavilion 41°Culet: NoneDepth 63.7%

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 30
Current: £872 GBP|Low: £248 GBP|High: £1,217 GBP|Avg: £517 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6£248 GBP
Retailer 4£324 GBP
Retailer 3£342 GBP
Retailer 7£381 GBP
Retailer 5£435 GBP
Retailer 8£639 GBP
Retailer 2£739 GBP
MOH London£872 GBP

41 data points across 8 retailers

7 retailers£248 GBP to £872 GBP

B+
Cheapest Retailer
-
£248 GBP
$332 USD
A
Retailer 2
-
£342 GBP
View
A
Retailer 3
-
£381 GBP
$510 USD
View
A
Retailer 4
-
£435 GBP
$583 USD
View
B+
Retailer 5
-
£639 GBP
$856 USD
View
B
Retailer 6
-
£739 GBP
$990 USD
View
Most Expensive
B
MOH London
LG773631420 · Oct 26
£872 GBP
View
6 more retailers have this diamond
Prices start from £248 GBPSave up to £624 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
£248 GBP