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Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG850682235

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG850682235

Diamond specifications and retailer prices

From $908 AUD
$638 USD
As of October 30, 2026
Save $2,651 AUD (74%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,559 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG850682235 or 850682235. Listed at 6 retailers as of October 30, 2026, with prices from $908 to $3,559, a $2,651 spread on the same certified stone. Brilliant Earth lists it at $3,559. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850682235
Dimensions6.52 × 6.52 × 4.32 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.52 mm6.52 mm1.55 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850682235
Side View
Table 60.0%Crown 36.9°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 66.3%

Caratlytics Score

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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: $3,559 AUD|Low: $908 AUD|High: $3,559 AUD|Avg: $1,674 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 5$908 AUD
Retailer 3$1,132 AUD
Retailer 2$1,173 AUD
Retailer 4$1,567 AUD
Retailer 6$2,346 AUD
Brilliant Earth$3,559 AUD

5 data points across 6 retailers

6 retailers$908 AUD to $3,559 AUD

A
Cheapest Retailer
-
$908 AUD
$638 USD
A
Retailer 2
-
$1,132 AUD
€757 EUR
View
A
Retailer 3
-
$1,173 AUD
£649 GBP
View
A
Retailer 4
-
$1,567 AUD
$1,101 USD
View
B+
Retailer 5
-
$2,346 AUD
$1,648 USD
View
Most Expensive
B
Brilliant Earth
22329053A · Oct 30
$3,559 AUD
$2,500 USD
View
5 more retailers have this diamond
Prices start from $908 AUDSave up to $2,651 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 Cushion
$908 AUD