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Cushion|Lab Grown|IGI

1.25ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG786634356

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634356

Diamond specifications and retailer prices

From £232 GBP
As of November 4, 2026
Save £924 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,566 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.25ct lab-grown cushion diamond

This 1.25ct 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 LG786634356 or 786634356. Listed at 18 retailers as of November 4, 2026, with a 398% 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

1.25
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle43.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634356
Dimensions7.07 × 6.20 × 3.76 mm
L/W Ratio1.14
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
7.07 mm6.20 mm1.25 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634356
Side View
Table 60.0%Crown 32.7°Girdle: MED-THKPavilion 43.2°Culet: LargeDepth 60.6%

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: £708 GBP|Low: £223 GBP|High: £1,168 GBP|Avg: £587 GBP|+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 12£232 GBP
Retailer 8£259 GBP
Retailer 5£270 GBP
Retailer 3£288 GBP
Retailer 14£288 GBP
Retailer 13£388 GBP
Retailer 10£403 GBP
Retailer 7£508 GBP
Retailer 1£708 GBP
Retailer 11£885 GBP
Retailer 4£925 GBP
Retailer 2£926 GBP
Retailer 6£1,115 GBP
Retailer 9£1,161 GBP

42 data points across 14 retailers

18 retailers£232 GBP to £1,157 GBP

A
Cheapest Retailer
-
£232 GBP
A
Retailer 2
-
£259 GBP
View
Final sale: no returns
A
Retailer 3
-
£270 GBP
View
Retailer 4
-
£288 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
£288 GBP
View
A
Retailer 6
-
£388 GBP
View
B+
Retailer 7
-
£396 GBP
View
B+
Retailer 8
-
£403 GBP
View
B+
Retailer 9
-
£508 GBP
View
B+
Retailer 10
-
£708 GBP
View
B
Retailer 11
-
£885 GBP
View
B
Retailer 12
-
£925 GBP
View
B
Retailer 13
-
£926 GBP
View
B
Retailer 14
-
£961 GBP
View
B
Retailer 15
-
£1,115 GBP
View
B
Retailer 16
-
£1,157 GBP
View
Retailer 17
-
£1,161 GBP
View
Price last confirmed 9 days ago
Most Expensive
Queensmith
LG786634356 · Oct 27
£1,566 GBP
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from £232 GBPSave up to £924 GBP

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
1.25ct Cushion
£232 GBP