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Cushion|Lab Grown|IGI

1.78ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG835655248

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG835655248

Diamond specifications and retailer prices

From $384 USD
£303 GBP
As of October 29, 2026
Save $2,328 USD (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,712 USD at Frank Darling · As of October 27, 2026
View at Frank Darling

About this 1.78ct lab-grown cushion diamond

This 1.78ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG835655248 or 835655248. Listed at 10 retailers as of October 27, 2026, with prices from $384 to $2,712, a $2,328 spread on the same certified stone. Frank Darling lists it at $2,712. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835655248
Dimensions8.74 × 6.20 × 4.11 mm
L/W Ratio1.41
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
8.74 mm6.20 mm1.78 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835655248
Side View
Table 58.0%Crown 33°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 66.3%

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 29
Current: $2,712 USD|Low: $297 USD|High: $2,712 USD|Avg: $1,012 USD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$297 USD
Retailer 3$384 USD
Retailer 10$450 USD
Retailer 6$485 USD
Retailer 7$580 USD
Retailer 4$840 USD
Retailer 8$1,270 USD
Retailer 2$1,455 USD
Retailer 5$2,340 USD
Frank Darling$2,712 USD

4 data points across 10 retailers

10 retailers$384 USD to $2,712 USD

A
Cheapest Retailer
-
$384 USD
£303 GBP
B+
Retailer 2
-
$450 USD
View
A
Retailer 3
-
$485 USD
View
A
Retailer 4
-
$580 USD
€552 EUR
View
A
Retailer 5
-
$840 USD
A$1,292 AUD
View
B+
Retailer 6
-
$1,270 USD
View
B
Retailer 7
-
$1,455 USD
£1,146 GBP
View
B
Retailer 8
-
$2,340 USD
View
B
Retailer 9
-
$2,400 USD
View
Most Expensive
B
Frank Darling
PD-234701GR · Oct 27
$2,712 USD
View
9 more retailers have this diamond
Prices start from $384 USDSave up to $2,328 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
1.78ct Cushion
$384 USD