CaratHunter
Plans
Cushion|Lab Grown|IGI

1.78ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG801692081

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG801692081

Diamond specifications and retailer prices

From $436 USD
£343 GBP
As of October 30, 2026
Save $2,277 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,714 USD at Frank Darling · As of October 31, 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 LG801692081 or 801692081. Listed at 12 retailers as of October 30, 2026, with prices from $436 to $2,714, a $2,277 spread on the same certified stone. Frank Darling lists it at $2,714. 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 angle27.6°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801692081
Dimensions9.00 × 6.17 × 3.82 mm
L/W Ratio1.46
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
9.00 mm6.17 mm1.78 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801692081
Side View
Table 59.0%Crown 27.6°Girdle: MED-STKPavilion 32.5°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,714 USD|Low: $435 USD|High: $2,740 USD|Avg: $1,297 USD
Frank Darling
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
October 31, 2026
Retailer 8$436 USD
Retailer 3$497 USD
Retailer 9$500 USD
Retailer 6$596 USD
Retailer 2$638 USD
Retailer 14$722 USD
Retailer 15$885 USD
Retailer 7$898 USD
Retailer 10$959 USD
Retailer 13$1,602 USD
Retailer 11$1,650 USD
Retailer 4$1,818 USD
Retailer 12$2,670 USD
Frank Darling$2,714 USD
Retailer 5$2,740 USD

21 data points across 15 retailers

12 retailers$436 USD to $2,714 USD

A
Cheapest Retailer
-
$436 USD
£343 GBP
B+
Retailer 2
-
$497 USD
View
A
Retailer 3
-
$500 USD
View
A
Retailer 4
-
$638 USD
€608 EUR
View
Retailer 5
-
$722 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$885 USD
View
B+
Retailer 7
-
$959 USD
A$1,475 AUD
View
Retailer 8
-
$1,602 USD
A$2,464 AUD
View
Price last confirmed 24 days ago
B+
Retailer 9
-
$1,650 USD
£1,299 GBP
View
Retailer 10
-
$1,818 USD
View
Price last confirmed 53 days ago
B
Retailer 11
-
$2,670 USD
View
Most Expensive
B
Frank Darling
929481BD · Oct 31
$2,714 USD
View
11 more retailers have this diamond
Prices start from $436 USDSave up to $2,277 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
$436 USD