Cushion|Lab Grown|IGI

1.83ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG840634991

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840634991

Diamond specifications and retailer prices

From $716 USD
As of October 30, 2026
Save $3,624 USD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,340 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.83ct lab-grown cushion diamond

This 1.83ct 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 very-good cut grade and certified by IGI LG840634991 or 840634991. Listed at 17 retailers as of October 30, 2026, with prices from $716 to $4,340, a $3,624 spread on the same certified stone. Brilliant Earth lists it at $4,340. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.83
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634991
Dimensions9.18 × 6.13 × 4.11 mm
L/W Ratio1.50
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
9.18 mm6.13 mm1.83 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634991
Side View
Table 59.0%Crown 34.6°Girdle: MED-THKPavilion 34.8°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,340 USD|Low: $716 USD|High: $5,860 USD|Avg: $2,120 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
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Retailer 17
October 31, 2026
Retailer 4$716 USD
Retailer 10$831 USD
Retailer 15$905 USD
Retailer 5$990 USD
Retailer 16$1,197 USD
Retailer 11$1,228 USD
Retailer 12$1,257 USD
Retailer 14$1,346 USD
Retailer 17$1,540 USD
Retailer 2$1,698 USD
Retailer 6$2,400 USD
Retailer 3$2,529 USD
Retailer 7$2,594 USD
Retailer 13$3,103 USD
Retailer 9$3,519 USD
Retailer 8$3,555 USD
Brilliant Earth$4,340 USD

13 data points across 17 retailers

17 retailers$716 USD to $4,340 USD

A
Cheapest Retailer
-
$716 USD
Final sale: no returns
A
Retailer 2
-
$831 USD
£654 GBP
View
A
Retailer 3
-
$905 USD
View
A
Retailer 4
-
$990 USD
View
A
Retailer 5
-
$1,197 USD
View
A
Retailer 6
-
$1,228 USD
£967 GBP
View
A
Retailer 7
-
$1,257 USD
€1,197 EUR
View
A
Retailer 8
-
$1,346 USD
ZAR 21,748 ZAR
View
A
Retailer 9
-
$1,540 USD
View
Retailer 10
-
$1,698 USD
View
B+
Retailer 11
-
$2,400 USD
View
B+
Retailer 12
-
$2,529 USD
View
B+
Retailer 13
-
$2,594 USD
SGD 3,505 SGD
View
B
Retailer 14
-
$3,103 USD
£2,443 GBP
View
B
Retailer 15
-
$3,519 USD
View
Retailer 16
-
$3,555 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21861636A · Oct 30
$4,340 USD
View
16 more retailers have this diamond
Prices start from $716 USDSave up to $3,624 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
1.83ct Cushion
$716 USD