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Cushion|Lab Grown|IGI

1.89ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG836607909

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836607909

Diamond specifications and retailer prices

From $739 USD
As of October 30, 2026
Save $3,761 USD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,500 USD at Brilliant Earth · As of October 30, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836607909 or 836607909. Listed at 16 retailers as of October 30, 2026, with prices from $739 to $4,500, a $3,761 spread on the same certified stone. Brilliant Earth lists it at $4,500. 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
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836607909
Dimensions9.08 × 6.22 × 4.18 mm
L/W Ratio1.46
Girdle conditionFaceted
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
9.08 mm6.22 mm1.89 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836607909
Side View
Table 62.0%Crown 34°Girdle: MED-THKPavilion 35.9°Culet: NoneDepth 67.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,500 USD|Low: $739 USD|High: $6,070 USD|Avg: $2,165 USD|-25.9%
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 3$739 USD
Retailer 8$812 USD
Retailer 2$857 USD
Retailer 12$930 USD
Retailer 9$1,208 USD
Retailer 13$1,233 USD
Retailer 10$1,296 USD
Retailer 11$1,388 USD
Retailer 14$1,634 USD
Retailer 16$2,347 USD
Retailer 4$2,479 USD
Retailer 15$2,607 USD
Retailer 5$2,675 USD
Retailer 7$3,204 USD
Retailer 6$3,675 USD
Brilliant Earth$4,500 USD

27 data points across 16 retailers

16 retailers$739 USD to $4,500 USD

A
Cheapest Retailer
-
$739 USD
Final sale: no returns
Retailer 2
-
$812 USD
View
Price last confirmed 13 days ago
Retailer 3
-
$857 USD
£675 GBP
View
A
Retailer 4
-
$930 USD
View
A
Retailer 5
-
$1,208 USD
£951 GBP
View
A
Retailer 6
-
$1,233 USD
View
A
Retailer 7
-
$1,296 USD
€1,234 EUR
View
A
Retailer 8
-
$1,388 USD
ZAR 22,430 ZAR
View
A
Retailer 9
-
$1,634 USD
View
B+
Retailer 10
-
$2,347 USD
£1,848 GBP
View
B+
Retailer 11
-
$2,479 USD
View
B+
Retailer 12
-
$2,607 USD
View
B+
Retailer 13
-
$2,675 USD
SGD 3,615 SGD
View
Retailer 14
-
$3,204 USD
£2,523 GBP
View
Price last confirmed 12 days ago
Retailer 15
-
$3,675 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21640937A · Oct 30
$4,500 USD
View
15 more retailers have this diamond
Prices start from $739 USDSave up to $3,761 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
1.89ct Cushion
$739 USD