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Cushion|Lab Grown|IGI

1.29ct D VVS1 Cushion Lab Grown Diamond

EX • D/VVS1 • IGI LG780681839

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

Certificate IGI LG780681839

Diamond specifications and retailer prices

From £256 GBP
As of November 4, 2026
Save £121 GBP (32%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £551 GBP at Novita Diamonds · As of August 19, 2026
View at Novita Diamonds

About this 1.29ct lab-grown cushion diamond

This 1.29ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG780681839 or 780681839. Listed at 3 retailers as of November 3, 2026, with a 47% 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

1.29
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780681839
Dimensions6.58 × 6.39 × 4.04 mm
L/W Ratio1.03
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
6.58 mm6.39 mm1.29 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780681839
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £551 GBP|Low: £256 GBP|High: £751 GBP|Avg: £433 GBP
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 4, 2026
Retailer 7£256 GBP
Retailer 2£256 GBP
Retailer 3£377 GBP
Retailer 6£392 GBP
Retailer 4£401 GBP
Novita Diamonds£551 GBP
Retailer 5£751 GBP

2 data points across 7 retailers

3 retailers£256 GBP to £377 GBP

B+
Cheapest Retailer
-
£256 GBP
A
Retailer 2
-
£377 GBP
View
Most Expensive
Novita Diamonds
cert_780681839 · Aug 19
£551 GBP
A$1,145 AUD
View
Price last confirmed 77 days ago
2 more retailers have this diamond
Prices start from £256 GBPSave up to £121 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
1.29ct Cushion
£256 GBP