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Cushion|Lab Grown|IGI

1.25ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG831698075

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831698075

Diamond specifications and retailer prices

From £349 GBP
$468 USD
As of November 1, 2026
Save £1,696 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,045 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831698075 or 831698075. Listed at 13 retailers as of October 31, 2026, with prices from £349 to £2,045, a £1,696 spread on the same certified stone. Brilliant Earth lists it at £2,045. 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

1.25
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831698075
Dimensions7.80 × 5.42 × 3.69 mm
L/W Ratio1.44
Girdle conditionFaceted
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
7.80 mm5.42 mm1.25 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831698075
Side View
Table 57.0%Crown 34.7°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 68.1%

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: £2,045 GBP|Low: £349 GBP|High: £2,045 GBP|Avg: £764 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 3£349 GBP
Retailer 4£375 GBP
Retailer 2£386 GBP
Retailer 13£485 GBP
Retailer 11£593 GBP
Retailer 6£617 GBP
Retailer 8£645 GBP
Retailer 10£648 GBP
Retailer 7£651 GBP
Retailer 12£1,232 GBP
Retailer 5£1,302 GBP
Retailer 9£1,468 GBP
Brilliant Earth£2,045 GBP

8 data points across 13 retailers

13 retailers£349 GBP to £2,045 GBP

A
Cheapest Retailer
-
£349 GBP
$468 USD
Final sale: no returns
Retailer 2
-
£375 GBP
$503 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£386 GBP
View
A
Retailer 4
-
£485 GBP
$650 USD
View
A
Retailer 5
-
£593 GBP
$795 USD
View
A
Retailer 6
-
£617 GBP
View
A
Retailer 7
-
£645 GBP
ZAR 13,955 ZAR
View
A
Retailer 8
-
£648 GBP
$868 USD
View
A
Retailer 9
-
£651 GBP
€831 EUR
View
B
Retailer 10
-
£1,232 GBP
$1,651 USD
View
B
Retailer 11
-
£1,302 GBP
SGD 2,358 SGD
View
B
Retailer 12
-
£1,468 GBP
View
Most Expensive
B
Brilliant Earth
22262590A · Oct 31
£2,045 GBP
$2,740 USD
View
12 more retailers have this diamond
Prices start from £349 GBPSave up to £1,696 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
£349 GBP