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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG836639794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836639794

Diamond specifications and retailer prices

From $581 USD
£458 GBP
As of October 29, 2026
Save $3,759 USD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,340 USD at Brilliant Earth · As of October 28, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836639794 or 836639794. Listed at 15 retailers as of October 28, 2026, with prices from $581 to $4,340, a $3,759 spread on the same certified stone. Brilliant Earth lists it at $4,340. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836639794
Dimensions7.99 × 6.51 × 4.49 mm
L/W Ratio1.23
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
7.99 mm6.51 mm1.83 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836639794
Side View
Table 62.0%Crown 33.2°Girdle: STK-THKPavilion 40°Culet: NoneDepth 69.0%

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 29
Current: $4,340 USD|Low: $579 USD|High: $4,340 USD|Avg: $1,931 USD
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
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Retailer 17
October 29, 2026
Retailer 11$581 USD
Retailer 13$661 USD
Retailer 4$710 USD
Retailer 15$786 USD
Retailer 10$828 USD
Retailer 12$849 USD
Retailer 5$1,161 USD
Retailer 17$1,305 USD
Retailer 16$1,459 USD
Retailer 2$2,019 USD
Retailer 9$2,214 USD
Retailer 8$2,609 USD
Retailer 6$3,167 USD
Retailer 3$3,270 USD
Retailer 7$3,455 USD
Retailer 14$3,550 USD
Brilliant Earth$4,340 USD

34 data points across 17 retailers

15 retailers$581 USD to $4,340 USD

A
Cheapest Retailer
-
$581 USD
£458 GBP
Returns within 30 days
A
Retailer 2
-
$661 USD
View
Returns within 30 days
A
Retailer 3
-
$710 USD
View
Returns within 40 days
A
Retailer 4
-
$786 USD
View
Returns within 30 days
A
Retailer 5
-
$828 USD
View
Returns within 30 days
A
Retailer 6
-
$849 USD
€809 EUR
View
Returns within 100 days
A
Retailer 7
-
$1,161 USD
View
Returns within 30 days
A
Retailer 8
-
$1,305 USD
A$2,008 AUD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$1,459 USD
View
Returns within 30 days
B+
Retailer 10
-
$2,019 USD
£1,590 GBP
View
B+
Retailer 11
-
$3,167 USD
A$4,873 AUD
View
Price last confirmed 21 days ago
Returns within 30 days
B
Retailer 12
-
$3,270 USD
View
Price last confirmed 7 days ago
Returns within 30 days
B
Retailer 13
-
$3,455 USD
View
Returns within 30 days
B+
Retailer 14
-
$3,550 USD
View
Returns within 60 days
Most Expensive
B
Brilliant Earth
21581090Y · Oct 28
$4,340 USD
View
Returns within 30 days
14 more retailers have this diamond
Prices start from $581 USDSave up to $3,759 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
$581 USD