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Cushion|Lab Grown|IGI

1.59ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG570349113

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG570349113

Diamond specifications and retailer prices

From $353 AUD
$248 USD
As of October 30, 2026
Save $2,665 AUD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,018 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.59ct lab-grown cushion diamond

This 1.59ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG570349113 or 570349113. Listed at 6 retailers as of October 30, 2026, with prices from $353 to $3,018, a $2,665 spread on the same certified stone. Do Amore Diamonds lists it at $3,018. 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

1.59
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570349113
Dimensions6.69 × 6.61 × 4.46 mm
L/W Ratio1.01
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
6.69 mm6.61 mm1.59 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570349113
Side View
Table 64.5%Crown 36.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 67.5%

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: Oct 30
Current: $3,018 AUD|Low: $219 AUD|High: $3,018 AUD|Avg: $1,342 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6$353 AUD
Retailer 4$666 AUD
Retailer 9$752 AUD
Retailer 8$834 AUD
Retailer 10$837 AUD
Retailer 11$1,031 AUD
Retailer 3$1,549 AUD
Retailer 2$1,727 AUD
Retailer 5$1,765 AUD
Retailer 7$2,150 AUD
Do Amore Diamonds$3,018 AUD

13 data points across 11 retailers

6 retailers$353 AUD to $3,018 AUD

A
Cheapest Retailer
-
$353 AUD
$248 USD
Final sale: no returns
B
Retailer 2
-
$666 AUD
$468 USD
View
B
Retailer 3
-
$1,727 AUD
£955 GBP
View
B
Retailer 4
-
$1,765 AUD
$1,240 USD
View
B
Retailer 5
-
$2,150 AUD
$1,510 USD
View
Most Expensive
C
Do Amore Diamonds
27-41238D730 · Oct 31
$3,018 AUD
$2,120 USD
View
5 more retailers have this diamond
Prices start from $353 AUDSave up to $2,665 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
1.59ct Cushion
$353 AUD