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Cushion|Lab Grown|IGI

1.86ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG744513209

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG744513209

Diamond specifications and retailer prices

From $511 USD
As of October 28, 2026
Save $4,859 USD (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,370 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.86ct lab-grown cushion diamond

This 1.86ct 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 LG744513209 or 744513209. Listed at 13 retailers as of October 28, 2026, with prices from $511 to $5,370, a $4,859 spread on the same certified stone. Brilliant Earth lists it at $5,370. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744513209
Dimensions8.21 × 8.21 × 6.39 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
8.21 mm8.21 mm1.86 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744513209
Side View
Table 62.0%Crown 33.6°Girdle: STK-THKPavilion 41°Culet: NoneDepth 72.0%

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 28
Current: $5,370 USD|Low: $365 USD|High: $5,540 USD|Avg: $2,043 USD|-3.1%
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
Retailer 14
October 30, 2026
Retailer 5$511 USD
Retailer 8$662 USD
Retailer 14$715 USD
Retailer 10$784 USD
Retailer 7$860 USD
Retailer 3$1,196 USD
Retailer 2$1,272 USD
Retailer 12$1,463 USD
Retailer 11$2,009 USD
Retailer 6$2,799 USD
Retailer 4$3,225 USD
Retailer 13$3,275 USD
Retailer 9$3,540 USD
Brilliant Earth$5,370 USD

28 data points across 14 retailers

13 retailers$511 USD to $5,370 USD

A
Cheapest Retailer
-
$511 USD
Final sale: no returns
A
Retailer 2
-
$662 USD
View
A
Retailer 3
-
$715 USD
View
A
Retailer 4
-
$784 USD
View
A
Retailer 5
-
$860 USD
€819 EUR
View
A
Retailer 6
-
$1,196 USD
View
A
Retailer 7
-
$1,272 USD
A$1,957 AUD
View
A
Retailer 8
-
$1,463 USD
View
B+
Retailer 9
-
$2,009 USD
£1,582 GBP
View
Retailer 10
-
$3,225 USD
A$4,961 AUD
View
Price last confirmed 21 days ago
Retailer 11
-
$3,275 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$3,540 USD
View
Most Expensive
B
Brilliant Earth
16861062Y · Oct 29
$5,370 USD
View
12 more retailers have this diamond
Prices start from $511 USDSave up to $4,859 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
1.86ct Cushion
$511 USD