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Cushion|Lab Grown|IGI

1.30ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG788624448

Shape and cutting style on the report: Cushion antique brilliant

Certificate IGI LG788624448

Diamond specifications and retailer prices

From £267 GBP
$358 USD
As of November 1, 2026
Save £1,401 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,668 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.3ct lab-grown cushion diamond

This 1.3ct 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 LG788624448 or 788624448. Listed at 15 retailers as of October 27, 2026, with prices from £267 to £1,668, a £1,401 spread on the same certified stone. Queensmith lists it at £1,668. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.30
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle43.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624448
Dimensions6.82 × 6.30 × 3.88 mm
L/W Ratio1.08
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
6.82 mm6.30 mm1.30 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624448
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 43.4°Culet: LargeDepth 61.6%

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 1
Current: £529 GBP|Low: £267 GBP|High: £1,202 GBP|Avg: £629 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£267 GBP
Retailer 10£296 GBP
Retailer 9£399 GBP
Retailer 6£410 GBP
Retailer 2£482 GBP
Retailer 4£511 GBP
Retailer 1£529 GBP
Retailer 8£723 GBP
Retailer 11£950 GBP
Retailer 3£1,149 GBP
Retailer 5£1,188 GBP

42 data points across 11 retailers

15 retailers£267 GBP to £1,668 GBP

A
Cheapest Retailer
-
£267 GBP
$358 USD
Final sale: no returns
Retailer 2
-
£296 GBP
$397 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
£399 GBP
$535 USD
View
A
Retailer 4
-
£410 GBP
$550 USD
View
B+
Retailer 5
-
£423 GBP
$567 USD
View
B+
Retailer 6
-
£482 GBP
$646 USD
View
B+
Retailer 7
-
£511 GBP
ZAR 11,057 ZAR
View
B+
Retailer 8
-
£529 GBP
View
B
Retailer 9
-
£723 GBP
A$1,490 AUD
View
B
Retailer 10
-
£950 GBP
SGD 1,721 SGD
View
B
Retailer 11
-
£986 GBP
$1,321 USD
View
B
Retailer 12
-
£1,149 GBP
View
B
Retailer 13
-
£1,177 GBP
$1,577 USD
View
B
Retailer 14
-
£1,188 GBP
View
Most Expensive
B
Queensmith
LG788624448 · Oct 27
£1,668 GBP
View
14 more retailers have this diamond
Prices start from £267 GBPSave up to £1,401 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
1.30ct Cushion
£267 GBP