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Cushion|Lab Grown|IGI

1.91ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG754576187

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754576187

Diamond specifications and retailer prices

From $656 AUD
$461 USD
As of October 30, 2026
Save $5,821 AUD (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $6,477 AUD at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.91ct lab-grown cushion diamond

This 1.91ct 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 LG754576187 or 754576187. Listed at 24 retailers as of October 24, 2026, with prices from $656 to $6,477, a $5,821 spread on the same certified stone. Brilliant Earth lists it at $6,477. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754576187
Dimensions8.15 × 6.92 × 4.56 mm
L/W Ratio1.18
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
8.15 mm6.92 mm1.91 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754576187
Side View
Table 59.0%Crown 33.7°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 65.9%

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: $5,495 AUD|Low: $656 AUD|High: $8,171 AUD|Avg: $2,610 AUD|-30.7%
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
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Retailer 15
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Retailer 17
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Retailer 19
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Retailer 21
October 31, 2026
Retailer 5$656 AUD
Retailer 6$727 AUD
Retailer 16$852 AUD
Retailer 4$984 AUD
Retailer 13$1,046 AUD
Retailer 19$1,093 AUD
Retailer 15$1,150 AUD
Retailer 2$1,329 AUD
Retailer 18$1,380 AUD
Retailer 17$1,462 AUD
Retailer 3$1,765 AUD
Retailer 9$1,884 AUD
Retailer 11$2,343 AUD
Retailer 12$2,626 AUD
Retailer 7$2,649 AUD
Retailer 21$2,722 AUD
Retailer 8$2,839 AUD
Retailer 10$2,965 AUD
Retailer 14$4,627 AUD
Retailer 20$5,210 AUD
Brilliant Earth$5,495 AUD

30 data points across 21 retailers

24 retailers$656 AUD to $6,477 AUD

A
Cheapest Retailer
-
$656 AUD
$461 USD
Final sale: no returns
A
Retailer 2
-
$727 AUD
$511 USD
View
A
Retailer 3
-
$852 AUD
£471 GBP
View
A
Retailer 4
-
$984 AUD
HK$5,400 HKD
View
A
Retailer 5
-
$1,046 AUD
$735 USD
View
A
Retailer 6
-
$1,093 AUD
$768 USD
View
A
Retailer 7
-
$1,150 AUD
$808 USD
View
A
Retailer 8
-
$1,329 AUD
£735 GBP
View
A
Retailer 9
-
$1,380 AUD
ZAR 15,659 ZAR
View
A
Retailer 10
-
$1,462 AUD
€978 EUR
View
A
Retailer 11
-
$1,765 AUD
$1,240 USD
View
Retailer 12
-
$1,884 AUD
View
Price last confirmed 11 days ago
Retailer 13
-
$2,343 AUD
£1,296 GBP
View
Price last confirmed 9 days ago
B+
Retailer 14
-
$2,626 AUD
$1,845 USD
View
A
Retailer 15
-
$2,649 AUD
$1,861 USD
View
A
Retailer 16
-
$2,696 AUD
$1,894 USD
View
B+
Retailer 17
-
$2,722 AUD
$1,912 USD
View
B+
Retailer 18
-
$2,839 AUD
SGD 2,695 SGD
View
Retailer 19
-
$2,965 AUD
£1,640 GBP
View
Price last confirmed 10 days ago
Retailer 20
-
$4,627 AUD
$3,250 USD
View
Price last confirmed 26 days ago
B
Retailer 21
-
$5,062 AUD
£2,800 GBP
View
B
Retailer 22
-
$5,210 AUD
$3,660 USD
View
B
Retailer 23
-
$5,495 AUD
$3,860 USD
View
Most Expensive
B
Brilliant Earth
16791955A · Oct 24
$6,477 AUD
$4,550 USD
View
23 more retailers have this diamond
Prices start from $656 AUDSave up to $5,821 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
1.91ct Cushion
$656 AUD