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Cushion|Lab Grown|IGI

1.31ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG579399923

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG579399923

Diamond specifications and retailer prices

From £210 GBP
As of November 4, 2026
Save £994 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,204 GBP at Do Amore Diamonds · As of November 5, 2026
View at Do Amore Diamonds

About this 1.31ct lab-grown cushion diamond

This 1.31ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG579399923 or 579399923. Listed at 13 retailers as of November 4, 2026, with prices from £210 to £1,204, a £994 spread on the same certified stone. Do Amore Diamonds lists it at £1,204. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579399923
Dimensions6.46 × 6.35 × 4.14 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.46 mm6.35 mm1.31 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579399923
Side View
Table 60.0%Crown 32.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
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: £1,204 GBP|Low: £210 GBP|High: £1,204 GBP|Avg: £489 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 4£210 GBP
Retailer 3£279 GBP
Retailer 10£287 GBP
Retailer 8£288 GBP
Retailer 6£296 GBP
Retailer 2£308 GBP
Retailer 5£418 GBP
Retailer 9£528 GBP
Retailer 11£680 GBP
Retailer 7£802 GBP
Do Amore Diamonds£1,204 GBP

11 data points across 11 retailers

13 retailers£210 GBP to £1,204 GBP

A
Cheapest Retailer
-
£210 GBP
B+
Retailer 2
-
£279 GBP
View
A
Retailer 3
-
£287 GBP
View
A
Retailer 4
-
£288 GBP
View
A
Retailer 5
-
£296 GBP
View
A
Retailer 6
-
£308 GBP
View
B+
Retailer 7
-
£418 GBP
View
B+
Retailer 8
-
£487 GBP
View
B+
Retailer 9
-
£528 GBP
View
Retailer 10
-
£602 GBP
View
Price last confirmed 15 days ago
B
Retailer 11
-
£680 GBP
View
B
Retailer 12
-
£802 GBP
View
Most Expensive
B
Do Amore Diamonds
27-6149F0C67 · Nov 5
£1,204 GBP
$1,620 USD
View
12 more retailers have this diamond
Prices start from £210 GBPSave up to £994 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
1.31ct Cushion
£210 GBP