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Cushion|Lab Grown|IGI

1.78ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG837640826

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837640826

Diamond specifications and retailer prices

From €272 EUR
$304 USD
As of October 31, 2026
Save €1,216 EUR (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,221 EUR at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

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 LG837640826 or 837640826. Listed at 19 retailers as of October 31, 2026, with a 447% 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

1.78
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837640826
Dimensions8.68 × 6.06 × 3.90 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.68 mm6.06 mm1.78 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837640826
Side View
Table 61.0%Crown 37.7°Girdle: MED-STKPavilion 33.1°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A+
Exceptional
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 31
Current: €405 EUR|Low: €272 EUR|High: €1,692 EUR|Avg: €742 EUR|-20.1%
Retailer 1
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
November 1, 2026
Retailer 17€272 EUR
Retailer 8€304 EUR
Retailer 10€318 EUR
Retailer 1€405 EUR
Retailer 7€412 EUR
Retailer 14€477 EUR
Retailer 6€520 EUR
Retailer 11€525 EUR
Retailer 12€612 EUR
Retailer 5€703 EUR
Retailer 4€808 EUR
Retailer 16€1,013 EUR
Retailer 15€1,158 EUR
Retailer 3€1,219 EUR
Retailer 13€1,250 EUR
Retailer 2€1,488 EUR
Retailer 9€1,692 EUR

22 data points across 17 retailers

19 retailers€272 EUR to €1,488 EUR

A+
Cheapest Retailer
-
€272 EUR
$304 USD
Final sale: no returns
Retailer 2
-
€304 EUR
$340 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
€318 EUR
£280 GBP
View
B+
Retailer 4
-
€405 EUR
$452 USD
View
A
Retailer 5
-
€412 EUR
$460 USD
View
A
Retailer 6
-
€477 EUR
View
A
Retailer 7
-
€520 EUR
ZAR 9,381 ZAR
View
A
Retailer 8
-
€525 EUR
£461 GBP
View
A
Retailer 9
-
€612 EUR
$684 USD
View
A
Retailer 10
-
€703 EUR
A$1,209 AUD
View
A
Retailer 11
-
€808 EUR
$903 USD
View
B+
Retailer 12
-
€1,013 EUR
$1,132 USD
View
B+
Retailer 13
-
€1,158 EUR
$1,294 USD
View
B+
Retailer 14
-
€1,219 EUR
£1,072 GBP
View
B+
Retailer 15
-
€1,250 EUR
$1,396 USD
View
Retailer 16
-
€1,434 EUR
A$2,464 AUD
View
Price last confirmed 27 days ago
B+
Retailer 17
-
€1,488 EUR
SGD 2,247 SGD
View
Retailer 18
-
€1,692 EUR
$1,890 USD
View
Price last confirmed 10 days ago
Most Expensive
Helzberg Diamonds
ZXZOJNMKGOIM · Oct 13
€2,221 EUR
$2,481 USD
View
Price last confirmed 19 days ago
18 more retailers have this diamond
Prices start from €272 EURSave up to €1,216 EUR

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
€272 EUR