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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 $280 AUD
$197 USD
As of October 29, 2026
Save $1,354 AUD (83%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,634 AUD 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 $280 to $1,634, a $1,354 spread on the same certified stone. MOH London lists it at $1,634. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,634 AUD|Low: $269 AUD|High: $1,660 AUD|Avg: $866 AUD|-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$280 AUD
Retailer 3$325 AUD
Retailer 2$446 AUD
Retailer 6$587 AUD
Retailer 8$823 AUD
Retailer 7$1,118 AUD
Retailer 4$1,122 AUD
Retailer 9$1,423 AUD
MOH London$1,634 AUD

27 data points across 9 retailers

8 retailers$280 AUD to $1,634 AUD

A
Cheapest Retailer
-
$280 AUD
$197 USD
A
Retailer 2
-
$325 AUD
$228 USD
View
A
Retailer 3
-
$446 AUD
£247 GBP
View
B+
Retailer 4
-
$823 AUD
$578 USD
View
B
Retailer 5
-
$1,118 AUD
$785 USD
View
B+
Retailer 6
-
$1,122 AUD
$788 USD
View
Retailer 7
-
$1,423 AUD
SGD 1,351 SGD
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
LG818635537 · Oct 29
$1,634 AUD
£904 GBP
View
7 more retailers have this diamond
Prices start from $280 AUDSave up to $1,354 AUD

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
$280 AUD