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Heart|Lab Grown|IGI

1.01ct E FL Heart Lab Grown Diamond

VG • E/FL • IGI LG818658536

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818658536

Diamond specifications and retailer prices

From £255 GBP
$339 USD
As of October 28, 2026
Save £1,345 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,599 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.01ct lab-grown heart diamond

This 1.01ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG818658536 or 818658536. Listed at 18 retailers as of October 28, 2026, with prices from £255 to £1,599, a £1,345 spread on the same certified stone. Brilliant Earth lists it at £1,599. 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

1.01
Carat
E
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658536
Dimensions6.19 × 6.90 × 3.95 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
6.19 mm6.90 mm1.01 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658536
Side View
Table 57.0%Crown 37.3°Girdle: MED-STKPavilion 36.9°Culet: NoneDepth 57.2%

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: Oct 28
Current: £1,599 GBP|Low: £255 GBP|High: £1,607 GBP|Avg: £787 GBP|-0.5%
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
October 30, 2026
Retailer 3£255 GBP
Retailer 2£299 GBP
Retailer 9£398 GBP
Retailer 12£448 GBP
Retailer 11£469 GBP
Retailer 8£485 GBP
Retailer 6£500 GBP
Retailer 13£634 GBP
Retailer 4£943 GBP
Retailer 5£987 GBP
Retailer 7£1,137 GBP
Retailer 10£1,143 GBP
Brilliant Earth£1,599 GBP

26 data points across 13 retailers

18 retailers£255 GBP to £1,599 GBP

A
Cheapest Retailer
-
£255 GBP
$339 USD
Final sale: no returns
Retailer 2
-
£284 GBP
$378 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
£299 GBP
View
Retailer 4
-
£318 GBP
$423 USD
View
Price last confirmed 31 days ago
Retailer 5
-
£352 GBP
$469 USD
View
Price last confirmed 26 days ago
Retailer 6
-
£352 GBP
$469 USD
View
Price last confirmed 17 days ago
B+
Retailer 7
-
£398 GBP
$530 USD
View
B+
Retailer 8
-
£448 GBP
$597 USD
View
B+
Retailer 9
-
£469 GBP
$625 USD
View
B+
Retailer 10
-
£485 GBP
ZAR 10,431 ZAR
View
B+
Retailer 11
-
£500 GBP
View
B+
Retailer 12
-
£634 GBP
$844 USD
View
B
Retailer 13
-
£943 GBP
$1,255 USD
View
B
Retailer 14
-
£987 GBP
$1,315 USD
View
Retailer 15
-
£1,132 GBP
$1,507 USD
View
Price last confirmed 29 days ago
B
Retailer 16
-
£1,137 GBP
View
B
Retailer 17
-
£1,143 GBP
$1,522 USD
View
Most Expensive
B
Brilliant Earth
21580918A · Oct 28
£1,599 GBP
$2,130 USD
View
17 more retailers have this diamond
Prices start from £255 GBPSave up to £1,345 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
1.01ct Heart
£255 GBP