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Heart|Lab Grown|IGI

1.43ct E FL Heart Lab Grown Diamond

VG • E/FL • IGI LG831698102

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831698102

Diamond specifications and retailer prices

From £347 GBP
$462 USD
As of October 28, 2026
Save £2,079 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,426 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.43ct lab-grown heart diamond

This 1.43ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG831698102 or 831698102. Listed at 12 retailers as of October 28, 2026, with prices from £347 to £2,426, a £2,079 spread on the same certified stone. Brilliant Earth lists it at £2,426. 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
E
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831698102
Dimensions6.94 × 7.68 × 4.65 mm
L/W Ratio1.11
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
6.94 mm7.68 mm1.43 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831698102
Side View
Table 57.0%Crown 34.8°Girdle: STK-THKPavilion 39.4°Culet: NoneDepth 60.5%

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: Oct 28
Current: £628 GBP|Low: £347 GBP|High: £1,366 GBP|Avg: £706 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 3£347 GBP
Retailer 6£370 GBP
Retailer 2£462 GBP
Retailer 10£555 GBP
Retailer 7£597 GBP
Retailer 1£628 GBP
Retailer 4£653 GBP
Retailer 8£826 GBP
Retailer 9£1,020 GBP
Retailer 11£1,147 GBP
Retailer 5£1,366 GBP

5 data points across 11 retailers

12 retailers£347 GBP to £2,426 GBP

A
Cheapest Retailer
-
£347 GBP
$462 USD
Final sale: no returns
A
Retailer 2
-
£370 GBP
View
A
Retailer 3
-
£462 GBP
$615 USD
View
A
Retailer 4
-
£555 GBP
$739 USD
View
B+
Retailer 5
-
£597 GBP
ZAR 12,853 ZAR
View
B+
Retailer 6
-
£628 GBP
View
B+
Retailer 7
-
£653 GBP
€828 EUR
View
B+
Retailer 8
-
£826 GBP
$1,100 USD
View
B
Retailer 9
-
£1,020 GBP
$1,358 USD
View
B
Retailer 10
-
£1,147 GBP
$1,527 USD
View
B
Retailer 11
-
£1,366 GBP
View
Most Expensive
B
Brilliant Earth
22262638A · Oct 28
£2,426 GBP
$3,230 USD
View
11 more retailers have this diamond
Prices start from £347 GBPSave up to £2,079 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 Heart
£347 GBP