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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG783670511

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG783670511

Diamond specifications and retailer prices

From €200 EUR
As of November 4, 2026
Save €864 EUR (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,064 EUR at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 LG783670511 or 783670511. Listed at 17 retailers as of November 4, 2026, with prices from €200 to €1,064, a €864 spread on the same certified stone. Reve Diamonds lists it at €1,064. 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 angle35.2°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783670511
Dimensions6.34 × 6.28 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.34 mm6.28 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783670511
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 66.1%

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: €296 EUR|Low: €193 EUR|High: €1,216 EUR|Avg: €550 EUR|-0.9%
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
Reve Diamonds
November 4, 2026
Retailer 10€200 EUR
Retailer 8€222 EUR
Retailer 1€296 EUR
Retailer 16€367 EUR
Retailer 14€383 EUR
Retailer 4€384 EUR
Retailer 9€403 EUR
Retailer 2€454 EUR
Retailer 3€508 EUR
Retailer 12€541 EUR
Retailer 11€592 EUR
Retailer 7€643 EUR
Retailer 6€691 EUR
Retailer 13€746 EUR
Retailer 5€760 EUR
Retailer 15€1,037 EUR
Reve Diamonds€1,064 EUR

21 data points across 17 retailers

17 retailers€200 EUR to €1,064 EUR

A
Cheapest Retailer
-
€200 EUR
Final sale: no returns
Retailer 2
-
€222 EUR
View
Price last confirmed 11 days ago
A
Retailer 3
-
€296 EUR
View
A
Retailer 4
-
€367 EUR
View
A
Retailer 5
-
€383 EUR
View
A
Retailer 6
-
€384 EUR
View
A
Retailer 7
-
€403 EUR
View
A
Retailer 8
-
€454 EUR
View
B+
Retailer 9
-
€508 EUR
View
B+
Retailer 10
-
€541 EUR
View
B+
Retailer 11
-
€592 EUR
View
Retailer 12
-
€643 EUR
View
Price last confirmed 8 days ago
B+
Retailer 13
-
€691 EUR
View
B+
Retailer 14
-
€746 EUR
View
B+
Retailer 15
-
€760 EUR
View
B
Retailer 16
-
€1,037 EUR
View
Most Expensive
B
Reve Diamonds
7BA50A69E · Nov 4
€1,064 EUR
$1,199 USD
View
16 more retailers have this diamond
Prices start from €200 EURSave up to €864 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
€200 EUR