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Cushion|Lab Grown|IGI

1.60ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG487193650

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

Certificate IGI LG487193650

Diamond specifications and retailer prices

From $303 AUD
$213 USD
As of October 30, 2026
Save $2,302 AUD (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,605 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.6ct lab-grown cushion diamond

This 1.6ct 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 top-tier cut grade and certified by IGI LG487193650 or 487193650. Listed at 12 retailers as of October 30, 2026, with prices from $303 to $2,605, a $2,302 spread on the same certified stone. Do Amore Diamonds lists it at $2,605. 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

1.60
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487193650
Dimensions6.81 × 6.77 × 4.57 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
6.81 mm6.77 mm1.60 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487193650
Side View
Table 60.5%Crown 33.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 67.5%

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: $1,486 AUD|Low: $303 AUD|High: $2,491 AUD|Avg: $1,067 AUD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8$303 AUD
Retailer 7$336 AUD
Retailer 4$599 AUD
Retailer 2$685 AUD
Retailer 9$814 AUD
Retailer 5$1,238 AUD
Retailer 6$1,466 AUD
Retailer 1$1,486 AUD
Retailer 3$2,491 AUD

42 data points across 9 retailers

12 retailers$303 AUD to $2,605 AUD

A
Cheapest Retailer
-
$303 AUD
$213 USD
Final sale: no returns
Retailer 2
-
$336 AUD
$236 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$451 AUD
$317 USD
View
A
Retailer 4
-
$599 AUD
€401 EUR
View
A
Retailer 5
-
$619 AUD
$435 USD
View
A
Retailer 6
-
$685 AUD
£379 GBP
View
A
Retailer 7
-
$814 AUD
$572 USD
View
B+
Retailer 8
-
$1,238 AUD
$869 USD
View
Retailer 9
-
$1,466 AUD
$1,030 USD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
$1,486 AUD
£822 GBP
View
B
Retailer 11
-
$2,491 AUD
$1,750 USD
View
Most Expensive
B
Do Amore Diamonds
27-7B52CA9F4 · Oct 31
$2,605 AUD
$1,830 USD
View
11 more retailers have this diamond
Prices start from $303 AUDSave up to $2,302 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
1.60ct Cushion
$303 AUD