CaratHunter
Plans
Oval|Lab Grown|IGI

1.55ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG818635537

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818635537

Diamond specifications and retailer prices

From £147 GBP
$197 USD
As of October 29, 2026
Save £710 GBP (83%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £857 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct lab-grown oval diamond

This 1.55ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818635537 or 818635537. Listed at 8 retailers as of October 29, 2026, with prices from £147 to £857, a £710 spread on the same certified stone. MOH London lists it at £857. 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

1.55
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818635537
Dimensions9.15 × 6.64 × 4.10 mm
L/W Ratio1.38
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.15 mm6.64 mm1.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818635537
Side View
Table 58.0%Crown 35.2°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 61.7%

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: £857 GBP|Low: £141 GBP|High: £870 GBP|Avg: £454 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5£147 GBP
Retailer 3£170 GBP
Retailer 2£234 GBP
Retailer 6£308 GBP
Retailer 8£431 GBP
Retailer 7£586 GBP
Retailer 4£588 GBP
Retailer 9£746 GBP
MOH London£857 GBP

27 data points across 9 retailers

8 retailers£147 GBP to £857 GBP

A
Cheapest Retailer
-
£147 GBP
$197 USD
A
Retailer 2
-
£170 GBP
$228 USD
View
A
Retailer 3
-
£234 GBP
View
B+
Retailer 4
-
£431 GBP
$578 USD
View
B
Retailer 5
-
£586 GBP
$785 USD
View
B+
Retailer 6
-
£588 GBP
$788 USD
View
Retailer 7
-
£746 GBP
SGD 1,351 SGD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
LG818635537 · Oct 29
£857 GBP
View
7 more retailers have this diamond
Prices start from £147 GBPSave up to £710 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
1.55ct Oval
£147 GBP