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Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG744513212

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG744513212

Diamond specifications and retailer prices

From $737 AUD
$518 USD
As of October 30, 2026
Save $4,786 AUD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,524 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG744513212 or 744513212. Listed at 13 retailers as of October 30, 2026, with prices from $737 to $5,524, a $4,786 spread on the same certified stone. Brilliant Earth lists it at $5,524. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513212
Dimensions7.90 × 6.66 × 4.65 mm
L/W Ratio1.19
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
7.90 mm6.66 mm1.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513212
Side View
Table 59.0%Crown 35.3°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 69.8%

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 30
Current: $5,524 AUD|Low: $737 AUD|High: $6,577 AUD|Avg: $2,698 AUD|-16.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 5$737 AUD
Retailer 8$954 AUD
Retailer 3$1,032 AUD
Retailer 10$1,132 AUD
Retailer 2$1,233 AUD
Retailer 4$1,754 AUD
Retailer 7$1,839 AUD
Retailer 12$2,109 AUD
Retailer 11$2,904 AUD
Retailer 6$4,601 AUD
Retailer 13$4,662 AUD
Retailer 9$5,125 AUD
Brilliant Earth$5,524 AUD

32 data points across 13 retailers

13 retailers$737 AUD to $5,524 AUD

A
Cheapest Retailer
-
$737 AUD
$518 USD
Final sale: no returns
A
Retailer 2
-
$954 AUD
$670 USD
View
A
Retailer 3
-
$1,032 AUD
$725 USD
View
A
Retailer 4
-
$1,132 AUD
$795 USD
View
A
Retailer 5
-
$1,233 AUD
€825 EUR
View
A
Retailer 6
-
$1,754 AUD
$1,232 USD
View
A
Retailer 7
-
$1,839 AUD
View
A
Retailer 8
-
$2,109 AUD
$1,481 USD
View
B+
Retailer 9
-
$2,904 AUD
£1,606 GBP
View
B+
Retailer 10
-
$4,601 AUD
View
Retailer 11
-
$4,662 AUD
$3,275 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$5,125 AUD
$3,600 USD
View
Most Expensive
B
Brilliant Earth
16861440Y · Oct 31
$5,524 AUD
$3,880 USD
View
12 more retailers have this diamond
Prices start from $737 AUDSave up to $4,786 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
1.89ct Cushion
$737 AUD