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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG786634100

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634100

Diamond specifications and retailer prices

From €282 EUR
As of November 4, 2026
Save €1,119 EUR (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,860 EUR at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG786634100 or 786634100. Listed at 18 retailers as of November 3, 2026, with a 397% 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

1.28
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634100
Dimensions7.02 × 6.25 × 3.93 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeLarge
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
7.02 mm6.25 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634100
Side View
Table 52.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.1°Culet: LargeDepth 62.9%

Caratlytics Score

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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: Nov 4
Current: €860 EUR|Low: €271 EUR|High: €1,418 EUR|Avg: €707 EUR|+1.3%
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
November 4, 2026
Retailer 11€282 EUR
Retailer 5€316 EUR
Retailer 4€328 EUR
Retailer 2€350 EUR
Retailer 13€350 EUR
Retailer 12€470 EUR
Retailer 9€488 EUR
Retailer 7€618 EUR
Retailer 1€860 EUR
Retailer 10€1,026 EUR
Retailer 3€1,119 EUR
Retailer 14€1,125 EUR
Retailer 6€1,366 EUR
Retailer 8€1,401 EUR

44 data points across 14 retailers

18 retailers€282 EUR to €1,401 EUR

A
Cheapest Retailer
-
€282 EUR
A
Retailer 2
-
€316 EUR
View
Final sale: no returns
A
Retailer 3
-
€328 EUR
View
Retailer 4
-
€350 EUR
View
Price last confirmed 11 days ago
A
Retailer 5
-
€350 EUR
View
A
Retailer 6
-
€470 EUR
View
B+
Retailer 7
-
€488 EUR
View
B+
Retailer 8
-
€491 EUR
View
B+
Retailer 9
-
€618 EUR
View
B
Retailer 10
-
€860 EUR
View
B
Retailer 11
-
€1,026 EUR
View
B
Retailer 12
-
€1,119 EUR
View
B
Retailer 13
-
€1,125 EUR
View
B
Retailer 14
-
€1,164 EUR
View
B
Retailer 15
-
€1,366 EUR
View
B
Retailer 16
-
€1,393 EUR
View
B
Retailer 17
-
€1,401 EUR
View
Most Expensive
Queensmith
LG786634100 · Oct 27
€1,860 EUR
£1,650 GBP
View
Price last confirmed 8 days ago
17 more retailers have this diamond
Prices start from €282 EURSave up to €1,119 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
1.28ct Cushion
€282 EUR