Cushion|Lab Grown|IGI

1.73ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662374

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662374

Diamond specifications and retailer prices

From $657 USD
£517 GBP
As of October 30, 2026
Save $2,943 USD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,600 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 LG846662374 or 846662374. Listed at 10 retailers as of October 30, 2026, with prices from $657 to $3,600, a $2,943 spread on the same certified stone. Brilliant Earth lists it at $3,600. 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 angle35.7°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662374
Dimensions8.01 × 6.45 × 4.44 mm
L/W Ratio1.24
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
8.01 mm6.45 mm1.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662374
Side View
Table 61.0%Crown 35.7°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
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 30
Current: $3,600 USD|Low: $657 USD|High: $7,459 USD|Avg: $2,464 USD|-23.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 7$657 USD
Retailer 2$760 USD
Retailer 6$962 USD
Retailer 4$1,395 USD
Retailer 8$1,458 USD
Retailer 5$2,154 USD
Retailer 3$2,248 USD
Retailer 10$2,940 USD
Retailer 9$3,086 USD
Brilliant Earth$3,600 USD

10 data points across 10 retailers

10 retailers$657 USD to $3,600 USD

A
Cheapest Retailer
-
$657 USD
£517 GBP
A
Retailer 2
-
$760 USD
View
A
Retailer 3
-
$962 USD
View
A
Retailer 4
-
$1,395 USD
View
A
Retailer 5
-
$1,458 USD
€1,389 EUR
View
B+
Retailer 6
-
$2,154 USD
View
B+
Retailer 7
-
$2,248 USD
View
Retailer 8
-
$2,940 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$3,086 USD
£2,430 GBP
View
Most Expensive
B
Brilliant Earth
22154764A · Oct 30
$3,600 USD
View
9 more retailers have this diamond
Prices start from $657 USDSave up to $2,943 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
$657 USD