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Cushion|Lab Grown|IGI

1.56ct J SI1 Cushion Lab Grown Diamond

VG • J/SI1 • IGI LG407985736

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

Certificate IGI LG407985736

Diamond specifications and retailer prices

From $534 AUD
$375 USD
As of November 1, 2026
Save $864 AUD (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,398 AUD at MOH London · As of November 1, 2026
View at MOH London

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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407985736 or 407985736. Listed at 4 retailers as of November 1, 2026, with prices from $534 to $1,398, a $864 spread on the same certified stone. MOH London lists it at $1,398. 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

1.56
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
Crown angle35.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407985736
Dimensions6.99 × 6.80 × 4.15 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.99 mm6.80 mm1.56 ctJ / SI1
OriginLab Grown
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG407985736
Side View
Table 66.0%Crown 35.1°Girdle: THN-THKPavilion 37°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,398 AUD|Low: $498 AUD|High: $1,414 AUD|Avg: $924 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3$534 AUD
Retailer 4$780 AUD
Retailer 5$801 AUD
Retailer 2$1,103 AUD
MOH London$1,398 AUD

14 data points across 5 retailers

4 retailers$534 AUD to $1,398 AUD

B
Cheapest Retailer
-
$534 AUD
$375 USD
B+
Retailer 2
-
$780 AUD
$548 USD
View
B+
Retailer 3
-
$1,103 AUD
$775 USD
View
Most Expensive
B+
MOH London
LG407985736 · Nov 1
$1,398 AUD
£773 GBP
View
3 more retailers have this diamond
Prices start from $534 AUDSave up to $864 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.

B+
1.56ct Cushion
$534 AUD