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Cushion|Lab Grown|IGI

1.73ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804650021

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804650021

Diamond specifications and retailer prices

From $1,535 USD
As of October 31, 2026
Save $2,045 USD (57%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,580 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct 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 LG804650021 or 804650021. Listed at 2 retailers as of October 30, 2026, with prices from $1,535 to $3,580, a $2,045 spread on the same certified stone. Brilliant Earth lists it at $3,580. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804650021
Dimensions8.66 × 6.04 × 3.93 mm
L/W Ratio1.43
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
8.66 mm6.04 mm1.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804650021
Side View
Table 58.0%Crown 32.9°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 65.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $3,580 USD|Low: $1,056 USD|High: $5,763 USD|Avg: $2,903 USD|-30.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9$1,056 USD
Retailer 5$1,128 USD
Retailer 2$1,535 USD
Retailer 8$1,680 USD
Retailer 12$2,310 USD
Retailer 7$2,564 USD
Retailer 11$2,587 USD
Retailer 6$2,954 USD
Brilliant Earth$3,580 USD
Retailer 3$3,962 USD
Retailer 10$4,771 USD
Retailer 4$5,763 USD

11 data points across 12 retailers

2 retailers$1,535 USD to $3,580 USD

A
Cheapest Retailer
-
$1,535 USD
Most Expensive
B
Brilliant Earth
21404720Y · Oct 30
$3,580 USD
View
1 more retailer has this diamond
Prices start from $1,535 USDSave up to $2,045 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
1.73ct Cushion
$1,535 USD