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Cushion|Lab Grown|IGI

1.13ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG831682809

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

Certificate IGI LG831682809

Diamond specifications and retailer prices

From $387 AUD
$272 USD
As of November 1, 2026
Save $963 AUD (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,351 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.13ct lab-grown cushion diamond

This 1.13ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG831682809 or 831682809. Listed at 7 retailers as of October 29, 2026, with prices from $387 to $1,351, a $963 spread on the same certified stone. MOH London lists it at $1,351. 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

1.13
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831682809
Dimensions6.00 × 5.92 × 3.86 mm
L/W Ratio1.01
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
6.00 mm5.92 mm1.13 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831682809
Side View
Table 65.0%Crown 36.5°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 65.2%

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: $1,351 AUD|Low: $387 AUD|High: $1,351 AUD|Avg: $663 AUD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$387 AUD
Retailer 3$493 AUD
Retailer 2$508 AUD
Retailer 6$555 AUD
Retailer 4$1,139 AUD
MOH London$1,351 AUD

12 data points across 6 retailers

7 retailers$387 AUD to $1,351 AUD

B+
Cheapest Retailer
-
$387 AUD
$272 USD
A
Retailer 2
-
$493 AUD
€330 EUR
View
A
Retailer 3
-
$508 AUD
£281 GBP
View
B+
Retailer 4
-
$555 AUD
$390 USD
View
B
Retailer 5
-
$890 AUD
$625 USD
View
B
Retailer 6
-
$1,139 AUD
$800 USD
View
Most Expensive
B
MOH London
LG831682809 · Oct 29
$1,351 AUD
£747 GBP
View
6 more retailers have this diamond
Prices start from $387 AUDSave up to $963 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
1.13ct Cushion
$387 AUD