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Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG731569199

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG731569199

Diamond specifications and retailer prices

From $709 AUD
$498 USD
As of October 30, 2026
Save $4,815 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 LG731569199 or 731569199. Listed at 13 retailers as of October 30, 2026, with prices from $709 to $5,524, a $4,815 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 angle33.2°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731569199
Dimensions8.21 × 6.49 × 4.54 mm
L/W Ratio1.27
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
8.21 mm6.49 mm1.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731569199
Side View
Table 61.0%Crown 33.2°Girdle: MED-THKPavilion 37.7°Culet: NoneDepth 70.0%

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: $5,524 AUD|Low: $709 AUD|High: $6,577 AUD|Avg: $2,695 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$709 AUD
Retailer 7$954 AUD
Retailer 13$1,032 AUD
Retailer 9$1,132 AUD
Retailer 2$1,233 AUD
Retailer 3$1,754 AUD
Retailer 6$1,839 AUD
Retailer 11$2,109 AUD
Retailer 10$2,904 AUD
Retailer 4$4,662 AUD
Retailer 12$4,662 AUD
Retailer 8$5,125 AUD
Brilliant Earth$5,524 AUD

31 data points across 13 retailers

13 retailers$709 AUD to $5,524 AUD

A
Cheapest Retailer
-
$709 AUD
$498 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
Retailer 10
-
$4,662 AUD
View
Price last confirmed 23 days ago
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
16087970Y · Oct 31
$5,524 AUD
$3,880 USD
View
12 more retailers have this diamond
Prices start from $709 AUDSave up to $4,815 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
$709 AUD