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Cushion|Lab Grown|IGI

1.31ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG839684864

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG839684864

Diamond specifications and retailer prices

From £268 GBP
As of November 4, 2026
Save £1,754 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,022 GBP at Do Amore Diamonds · As of November 4, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG839684864 or 839684864. Listed at 19 retailers as of November 4, 2026, with prices from £268 to £2,022, a £1,754 spread on the same certified stone. Do Amore Diamonds lists it at £2,022. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684864
Dimensions7.89 × 5.86 × 3.72 mm
L/W Ratio1.35
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
7.89 mm5.86 mm1.31 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684864
Side View
Table 56.0%Crown 37.2°Girdle: MED-STKPavilion 37.8°Culet: LargeDepth 63.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £2,022 GBP|Low: £250 GBP|High: £2,022 GBP|Avg: £740 GBP
Do Amore Diamonds
Retailer 2
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Retailer 19
November 4, 2026
Retailer 17£268 GBP
Retailer 6£301 GBP
Retailer 11£311 GBP
Retailer 16£311 GBP
Retailer 4£333 GBP
Retailer 19£444 GBP
Retailer 10£493 GBP
Retailer 5£530 GBP
Retailer 3£554 GBP
Retailer 13£597 GBP
Retailer 18£895 GBP
Retailer 12£941 GBP
Retailer 15£976 GBP
Retailer 9£999 GBP
Retailer 7£1,181 GBP
Retailer 8£1,262 GBP
Retailer 2£1,293 GBP
Retailer 14£1,434 GBP
Do Amore Diamonds£2,022 GBP

17 data points across 19 retailers

19 retailers£268 GBP to £2,022 GBP

A
Cheapest Retailer
-
£268 GBP
A
Retailer 2
-
£301 GBP
View
Final sale: no returns
A
Retailer 3
-
£311 GBP
View
Retailer 4
-
£311 GBP
View
Price last confirmed 23 days ago
A
Retailer 5
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£333 GBP
View
A
Retailer 6
-
£444 GBP
View
A
Retailer 7
-
£493 GBP
View
A
Retailer 8
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£499 GBP
View
A
Retailer 9
-
£530 GBP
View
A
Retailer 10
-
£597 GBP
View
B+
Retailer 11
-
£895 GBP
View
B+
Retailer 12
-
£941 GBP
View
B
Retailer 13
-
£976 GBP
View
B+
Retailer 14
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£999 GBP
View
B
Retailer 15
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£1,181 GBP
View
B
Retailer 16
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£1,262 GBP
View
B
Retailer 17
-
£1,293 GBP
View
B
Retailer 18
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£1,434 GBP
View
Most Expensive
B
Do Amore Diamonds
20-E101170 · Nov 4
£2,022 GBP
$2,730 USD
View
18 more retailers have this diamond
Prices start from £268 GBPSave up to £1,754 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
£268 GBP