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Cushion|Lab Grown|IGI

1.43ct F FL Cushion Lab Grown Diamond

VG • F/FL • IGI LG831698104

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831698104

Diamond specifications and retailer prices

From £370 GBP
$496 USD
As of November 1, 2026
Save £1,270 GBP (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,639 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.43ct lab-grown cushion diamond

This 1.43ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831698104 or 831698104. Listed at 12 retailers as of November 1, 2026, with prices from £370 to £1,639, a £1,270 spread on the same certified stone. Brilliant Earth lists it at £1,639. 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

1.43
Carat
F
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831698104
Dimensions8.50 × 5.56 × 3.78 mm
L/W Ratio1.53
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
8.50 mm5.56 mm1.43 ctF / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831698104
Side View
Table 59.0%Crown 34.5°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,639 GBP|Low: £370 GBP|High: £1,639 GBP|Avg: £847 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
November 2, 2026
Retailer 3£370 GBP
Retailer 2£432 GBP
Retailer 9£619 GBP
Retailer 11£642 GBP
Retailer 8£649 GBP
Retailer 6£670 GBP
Retailer 5£705 GBP
Retailer 10£861 GBP
Retailer 4£1,300 GBP
Retailer 12£1,339 GBP
Retailer 7£1,502 GBP
Brilliant Earth£1,639 GBP

9 data points across 12 retailers

12 retailers£370 GBP to £1,639 GBP

A
Cheapest Retailer
-
£370 GBP
$496 USD
Final sale: no returns
A
Retailer 2
-
£432 GBP
View
A
Retailer 3
-
£619 GBP
$830 USD
View
A
Retailer 4
-
£642 GBP
$862 USD
View
A
Retailer 5
-
£649 GBP
€829 EUR
View
A
Retailer 6
-
£670 GBP
View
A
Retailer 7
-
£705 GBP
ZAR 15,286 ZAR
View
B+
Retailer 8
-
£861 GBP
$1,156 USD
View
B+
Retailer 9
-
£1,300 GBP
SGD 2,358 SGD
View
B
Retailer 10
-
£1,339 GBP
$1,797 USD
View
B
Retailer 11
-
£1,502 GBP
View
Most Expensive
B
Brilliant Earth
22262690A · Nov 2
£1,639 GBP
$2,200 USD
View
11 more retailers have this diamond
Prices start from £370 GBPSave up to £1,270 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
1.43ct Cushion
£370 GBP