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Round|Lab Grown|IGI

1.55ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG794602526

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794602526

Diamond specifications and retailer prices

From $456 AUD
$320 USD
As of November 1, 2026
Save $1,128 AUD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,584 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round 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 LG794602526 or 794602526. Listed at 6 retailers as of November 1, 2026, with prices from $456 to $1,584, a $1,128 spread on the same certified stone. MOH London lists it at $1,584. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794602526
Dimensions7.41 × 7.44 × 4.56 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm7.44 mm1.55 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794602526
Side View
Table 58.0%Crown 34.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.4%

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: Nov 1
Current: $1,584 AUD|Low: $456 AUD|High: $1,602 AUD|Avg: $845 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4$456 AUD
Retailer 2$610 AUD
Retailer 5$673 AUD
Retailer 3$708 AUD
Retailer 6$1,165 AUD
MOH London$1,584 AUD

38 data points across 6 retailers

6 retailers$456 AUD to $1,584 AUD

B+
Cheapest Retailer
-
$456 AUD
$320 USD
A
Retailer 2
-
$610 AUD
£337 GBP
View
A
Retailer 3
-
$673 AUD
$473 USD
View
A
Retailer 4
-
$708 AUD
$497 USD
View
B+
Retailer 5
-
$1,165 AUD
$818 USD
View
Most Expensive
B
MOH London
LG794602526 · Nov 1
$1,584 AUD
£876 GBP
View
5 more retailers have this diamond
Prices start from $456 AUDSave up to $1,128 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 Round
$456 AUD