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Cushion|Lab Grown|IGI

1.80ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG744513208

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG744513208

Diamond specifications and retailer prices

From $494 USD
As of October 30, 2026
Save $3,766 USD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,260 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.8ct lab-grown cushion diamond

This 1.8ct 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 LG744513208 or 744513208. Listed at 13 retailers as of October 29, 2026, with prices from $494 to $4,260, a $3,766 spread on the same certified stone. Brilliant Earth lists it at $4,260. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513208
Dimensions8.20 × 8.20 × 6.58 mm
L/W Ratio1.00
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
8.20 mm8.20 mm1.80 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513208
Side View
Table 62.0%Crown 33.9°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 68.7%

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: $4,260 USD|Low: $353 USD|High: $4,400 USD|Avg: $1,821 USD|-3.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 5$494 USD
Retailer 9$646 USD
Retailer 13$690 USD
Retailer 8$764 USD
Retailer 6$868 USD
Retailer 3$1,124 USD
Retailer 2$1,234 USD
Retailer 11$1,426 USD
Retailer 7$1,957 USD
Retailer 4$3,117 USD
Retailer 12$3,265 USD
Retailer 10$3,440 USD
Brilliant Earth$4,260 USD

31 data points across 13 retailers

13 retailers$494 USD to $4,260 USD

A
Cheapest Retailer
-
$494 USD
Final sale: no returns
A
Retailer 2
-
$646 USD
View
A
Retailer 3
-
$690 USD
View
A
Retailer 4
-
$764 USD
View
A
Retailer 5
-
$868 USD
€827 EUR
View
A
Retailer 6
-
$1,124 USD
View
A
Retailer 7
-
$1,234 USD
A$1,898 AUD
View
A
Retailer 8
-
$1,426 USD
View
B+
Retailer 9
-
$1,957 USD
£1,541 GBP
View
Retailer 10
-
$3,117 USD
A$4,796 AUD
View
Price last confirmed 22 days ago
Retailer 11
-
$3,265 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$3,440 USD
View
Most Expensive
B
Brilliant Earth
16861116Y · Oct 29
$4,260 USD
View
12 more retailers have this diamond
Prices start from $494 USDSave up to $3,766 USD

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
1.80ct Cushion
$494 USD