CaratHunter
Plans
Cushion|Lab Grown|IGI

0.55ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG578315825

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG578315825

Diamond specifications and retailer prices

From $217 AUD
$152 USD
As of November 1, 2026
Save $959 AUD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,176 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 0.55ct lab-grown cushion diamond

This 0.55ct lab-grown cushion sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG578315825 or 578315825. Listed at 10 retailers as of October 26, 2026, with prices from $217 to $1,176, a $959 spread on the same certified stone. MOH London lists it at $1,176. 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

0.55
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578315825
Dimensions4.96 × 4.73 × 3.03 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
4.96 mm4.73 mm0.55 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578315825
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 64.1%

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: Nov 1
Current: $1,176 AUD|Low: $170 AUD|High: $1,189 AUD|Avg: $472 AUD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$170 AUD
Retailer 6$217 AUD
Retailer 2$297 AUD
Retailer 3$304 AUD
Retailer 4$385 AUD
Retailer 5$386 AUD
Retailer 8$546 AUD
Retailer 9$601 AUD
MOH London$1,176 AUD

44 data points across 9 retailers

10 retailers$217 AUD to $1,176 AUD

Retailer 1
-
$170 AUD
$119 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$217 AUD
$152 USD
View
A
Retailer 3
-
$297 AUD
£164 GBP
View
A
Retailer 4
-
$304 AUD
€203 EUR
View
A
Retailer 5
-
$385 AUD
$270 USD
View
A
Retailer 6
-
$386 AUD
£213 GBP
View
B+
Retailer 7
-
$507 AUD
£280 GBP
View
Retailer 8
-
$546 AUD
SGD 517 SGD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$601 AUD
$421 USD
View
Most Expensive
B
MOH London
LG578315825 · Oct 26
$1,176 AUD
£649 GBP
View
9 more retailers have this diamond
Prices start from $217 AUDSave up to $959 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
0.55ct Cushion
$217 AUD