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Cushion|Lab Grown|IGI

1.77ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG841678782

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG841678782

Diamond specifications and retailer prices

From $609 USD
£479 GBP
As of October 30, 2026
Save $3,111 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,541 USD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG841678782 or 841678782. Listed at 12 retailers as of October 29, 2026, with a 511% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841678782
Dimensions9.09 × 5.98 × 4.18 mm
L/W Ratio1.52
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
9.09 mm5.98 mm1.77 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841678782
Side View
Table 60.0%Crown 34.9°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 69.9%

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: $5,541 USD|Low: $607 USD|High: $5,541 USD|Avg: $2,312 USD
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 6$609 USD
Retailer 11$750 USD
Retailer 10$819 USD
Retailer 8$902 USD
Retailer 13$1,100 USD
Retailer 7$1,336 USD
Retailer 12$2,111 USD
Retailer 4$2,614 USD
Retailer 3$2,695 USD
Retailer 5$2,876 USD
Retailer 2$3,320 USD
Retailer 9$3,720 USD
Novita Diamonds$5,541 USD

22 data points across 13 retailers

12 retailers$609 USD to $3,720 USD

A
Cheapest Retailer
-
$609 USD
£479 GBP
A
Retailer 2
-
$750 USD
View
A
Retailer 3
-
$819 USD
View
A
Retailer 4
-
$902 USD
€859 EUR
View
A
Retailer 5
-
$1,100 USD
View
A
Retailer 6
-
$1,336 USD
A$2,056 AUD
View
B+
Retailer 7
-
$2,111 USD
£1,662 GBP
View
Retailer 8
-
$2,614 USD
View
Price last confirmed 14 days ago
Retailer 9
-
$2,695 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$3,320 USD
View
B
Retailer 11
-
$3,720 USD
View
Most Expensive
Novita Diamonds
cert_841678782 · Oct 8
$5,541 USD
A$8,525 AUD
View
Price last confirmed 22 days ago
11 more retailers have this diamond
Prices start from $609 USDSave up to $3,111 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
$609 USD