CaratHunter
Plans
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 €285 EUR
$318 USD
As of October 29, 2026
Save €1,591 EUR (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,876 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 October 27, 2026, with prices from €285 to €1,876, a €1,591 spread on the same certified stone. Queensmith lists it at €1,876. 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
Color
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

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 29
Current: €624 EUR|Low: €273 EUR|High: €1,431 EUR|Avg: €708 EUR|+2.3%
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
October 31, 2026
Retailer 11€285 EUR
Retailer 5€319 EUR
Retailer 4€330 EUR
Retailer 2€353 EUR
Retailer 13€353 EUR
Retailer 12€474 EUR
Retailer 8€492 EUR
Retailer 1€624 EUR
Retailer 7€860 EUR
Retailer 10€1,035 EUR
Retailer 3€1,129 EUR
Retailer 14€1,134 EUR
Retailer 6€1,378 EUR
Retailer 9€1,415 EUR

42 data points across 14 retailers

18 retailers€285 EUR to €1,876 EUR

A
Cheapest Retailer
-
€285 EUR
$318 USD
A
Retailer 2
-
€319 EUR
$356 USD
View
Final sale: no returns
A
Retailer 3
-
€330 EUR
$369 USD
View
A
Retailer 4
-
€353 EUR
$394 USD
View
A
Retailer 5
-
€353 EUR
$394 USD
View
A
Retailer 6
-
€474 EUR
$530 USD
View
B+
Retailer 7
-
€492 EUR
$550 USD
View
B+
Retailer 8
-
€495 EUR
$553 USD
View
B+
Retailer 9
-
€624 EUR
£549 GBP
View
B
Retailer 10
-
€860 EUR
A$1,479 AUD
View
B
Retailer 11
-
€1,035 EUR
$1,156 USD
View
B
Retailer 12
-
€1,129 EUR
SGD 1,705 SGD
View
B
Retailer 13
-
€1,134 EUR
$1,267 USD
View
B
Retailer 14
-
€1,175 EUR
$1,312 USD
View
B
Retailer 15
-
€1,378 EUR
£1,212 GBP
View
B
Retailer 16
-
€1,405 EUR
$1,570 USD
View
B
Retailer 17
-
€1,415 EUR
£1,245 GBP
View
Most Expensive
B
Queensmith
LG786634100 · Oct 27
€1,876 EUR
£1,650 GBP
View
17 more retailers have this diamond
Prices start from €285 EURSave up to €1,591 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
€285 EUR