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Cushion|Lab Grown|IGI

1.56ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG538298330

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG538298330

Diamond specifications and retailer prices

From $303 AUD
$213 USD
As of October 28, 2026
Save $1,490 AUD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,793 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.56ct lab-grown cushion diamond

This 1.56ct lab-grown cushion 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 LG538298330 or 538298330. Listed at 13 retailers as of October 28, 2026, with prices from $303 to $1,793, a $1,490 spread on the same certified stone. Brilliant Earth lists it at $1,793. 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

1.56
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538298330
Dimensions7.63 × 6.06 × 3.93 mm
L/W Ratio1.26
Girdle conditionFaceted
Culet sizePointed
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
7.63 mm6.06 mm1.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG538298330
Side View
Table 58.5%Crown 36.2°Girdle: MED-THKPavilion 29.9°Culet: NoneDepth 64.9%

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 28
Current: $1,793 AUD|Low: $303 AUD|High: $1,936 AUD|Avg: $820 AUD|-7.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$303 AUD
Retailer 7$337 AUD
Retailer 5$455 AUD
Retailer 3$556 AUD
Retailer 2$613 AUD
Retailer 10$674 AUD
Retailer 8$814 AUD
Retailer 6$853 AUD
Retailer 4$1,584 AUD
Brilliant Earth$1,793 AUD

43 data points across 10 retailers

13 retailers$303 AUD to $1,793 AUD

A
Cheapest Retailer
-
$303 AUD
$213 USD
Final sale: no returns
A
Retailer 2
-
$337 AUD
$237 USD
View
B+
Retailer 3
-
$455 AUD
$320 USD
View
A
Retailer 4
-
$556 AUD
€372 EUR
View
A
Retailer 5
-
$613 AUD
£339 GBP
View
A
Retailer 6
-
$674 AUD
$474 USD
View
A
Retailer 7
-
$679 AUD
$477 USD
View
B+
Retailer 8
-
$814 AUD
$572 USD
View
B+
Retailer 9
-
$853 AUD
$599 USD
View
B+
Retailer 10
-
$1,160 AUD
$815 USD
View
B
Retailer 11
-
$1,584 AUD
£876 GBP
View
B
Retailer 12
-
$1,658 AUD
$1,165 USD
View
Most Expensive
B
Brilliant Earth
10789106A · Oct 29
$1,793 AUD
$1,260 USD
View
12 more retailers have this diamond
Prices start from $303 AUDSave up to $1,490 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
1.56ct Cushion
$303 AUD