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Cushion|Lab Grown|IGI

1.90ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG675592990

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG675592990

Diamond specifications and retailer prices

From $653 AUD
$459 USD
As of October 30, 2026
Save $4,813 AUD (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,467 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.9ct lab-grown cushion diamond

This 1.9ct 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 LG675592990 or 675592990. Listed at 22 retailers as of October 30, 2026, with prices from $653 to $5,467, a $4,813 spread on the same certified stone. Brilliant Earth lists it at $5,467. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.90
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675592990
Dimensions8.73 × 6.63 × 4.41 mm
L/W Ratio1.32
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
8.73 mm6.63 mm1.90 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675592990
Side View
Table 61.0%Crown 31.2°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 66.5%

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: $5,467 AUD|Low: $653 AUD|High: $6,606 AUD|Avg: $2,467 AUD|-17.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 20
October 31, 2026
Retailer 8$653 AUD
Retailer 5$723 AUD
Retailer 3$849 AUD
Retailer 18$984 AUD
Retailer 17$1,039 AUD
Retailer 4$1,090 AUD
Retailer 13$1,145 AUD
Retailer 2$1,322 AUD
Retailer 16$1,373 AUD
Retailer 20$1,748 AUD
Retailer 14$1,861 AUD
Retailer 7$2,640 AUD
Retailer 10$2,683 AUD
Retailer 11$2,780 AUD
Retailer 9$2,823 AUD
Retailer 15$2,951 AUD
Retailer 12$3,319 AUD
Retailer 19$4,477 AUD
Retailer 6$5,182 AUD
Brilliant Earth$5,467 AUD

30 data points across 20 retailers

22 retailers$653 AUD to $5,467 AUD

A
Cheapest Retailer
-
$653 AUD
$459 USD
Final sale: no returns
A
Retailer 2
-
$723 AUD
$508 USD
View
Retailer 3
-
$849 AUD
£470 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
$984 AUD
HK$5,400 HKD
View
A
Retailer 5
-
$1,039 AUD
$730 USD
View
A
Retailer 6
-
$1,090 AUD
$766 USD
View
A
Retailer 7
-
$1,145 AUD
$804 USD
View
A
Retailer 8
-
$1,322 AUD
£731 GBP
View
A
Retailer 9
-
$1,373 AUD
ZAR 15,582 ZAR
View
A
Retailer 10
-
$1,748 AUD
$1,228 USD
View
A
Retailer 11
-
$1,861 AUD
View
B+
Retailer 12
-
$2,640 AUD
$1,855 USD
View
B+
Retailer 13
-
$2,683 AUD
$1,885 USD
View
B+
Retailer 14
-
$2,780 AUD
$1,953 USD
View
B+
Retailer 15
-
$2,823 AUD
SGD 2,680 SGD
View
B+
Retailer 16
-
$2,951 AUD
£1,632 GBP
View
Retailer 17
-
$3,319 AUD
£1,836 GBP
View
Price last confirmed 17 days ago
Retailer 18
-
$4,477 AUD
$3,145 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$5,062 AUD
£2,800 GBP
View
Retailer 20
-
$5,095 AUD
$3,579 USD
View
Price last confirmed 83 days ago
B
Retailer 21
-
$5,182 AUD
$3,640 USD
View
Most Expensive
B
Brilliant Earth
20152130Y · Oct 30
$5,467 AUD
$3,840 USD
View
21 more retailers have this diamond
Prices start from $653 AUDSave up to $4,813 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
1.90ct Cushion
$653 AUD