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Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG836608009

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG836608009

Diamond specifications and retailer prices

From $707 USD
As of October 30, 2026
Save $2,973 USD (81%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,680 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct 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 LG836608009 or 836608009. Listed at 20 retailers as of October 30, 2026, with prices from $707 to $3,680, a $2,973 spread on the same certified stone. Brilliant Earth lists it at $3,680. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836608009
Dimensions6.84 × 6.82 × 4.51 mm
L/W Ratio1.00
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
6.84 mm6.82 mm1.77 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836608009
Side View
Table 63.0%Crown 34.4°Girdle: MED-THKPavilion 37.6°Culet: NoneDepth 66.1%

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: $3,680 USD|Low: $707 USD|High: $5,680 USD|Avg: $1,933 USD|-35.2%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 4$707 USD
Retailer 11$760 USD
Retailer 14$765 USD
Retailer 19$830 USD
Retailer 7$944 USD
Retailer 8$1,108 USD
Retailer 15$1,127 USD
Retailer 18$1,240 USD
Retailer 16$1,243 USD
Retailer 20$1,439 USD
Retailer 2$1,623 USD
Retailer 6$2,103 USD
Retailer 3$2,336 USD
Retailer 13$2,456 USD
Retailer 9$2,565 USD
Retailer 5$2,703 USD
Retailer 10$3,005 USD
Retailer 17$3,148 USD
Retailer 12$3,413 USD
Brilliant Earth$3,680 USD

25 data points across 20 retailers

20 retailers$707 USD to $3,680 USD

A
Cheapest Retailer
-
$707 USD
Final sale: no returns
Retailer 2
-
$760 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$765 USD
£602 GBP
View
A
Retailer 4
-
$830 USD
View
A
Retailer 5
-
$944 USD
View
A
Retailer 6
-
$1,108 USD
View
A
Retailer 7
-
$1,127 USD
£888 GBP
View
A
Retailer 8
-
$1,240 USD
ZAR 20,029 ZAR
View
A
Retailer 9
-
$1,243 USD
€1,184 EUR
View
A
Retailer 10
-
$1,439 USD
View
A
Retailer 11
-
$1,623 USD
View
B+
Retailer 12
-
$2,103 USD
£1,656 GBP
View
B+
Retailer 13
-
$2,336 USD
View
B+
Retailer 14
-
$2,456 USD
View
B+
Retailer 15
-
$2,565 USD
SGD 3,466 SGD
View
B+
Retailer 16
-
$2,703 USD
View
Retailer 17
-
$3,005 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$3,148 USD
£2,479 GBP
View
B
Retailer 19
-
$3,413 USD
View
Most Expensive
B
Brilliant Earth
21695330A · Oct 30
$3,680 USD
View
19 more retailers have this diamond
Prices start from $707 USDSave up to $2,973 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
1.77ct Cushion
$707 USD