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Heart|Lab Grown|IGI

1.00ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG836621580

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836621580

Diamond specifications and retailer prices

From £203 GBP
$270 USD
As of October 27, 2026
Save £1,382 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,584 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836621580 or 836621580. Listed at 19 retailers as of October 27, 2026, with prices from £203 to £1,584, a £1,382 spread on the same certified stone. Brilliant Earth lists it at £1,584. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836621580
Dimensions6.21 × 6.77 × 4.04 mm
L/W Ratio1.09
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
6.21 mm6.77 mm1.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836621580
Side View
Table 61.0%Crown 39.8°Girdle: STK-THKPavilion 39.2°Culet: NoneDepth 59.7%

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: Oct 27
Current: £1,584 GBP|Low: £230 GBP|High: £1,645 GBP|Avg: £677 GBP|-3.7%
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
Retailer 14
October 29, 2026
Retailer 3£230 GBP
Retailer 9£267 GBP
Retailer 11£372 GBP
Retailer 7£410 GBP
Retailer 5£417 GBP
Retailer 10£431 GBP
Retailer 4£433 GBP
Retailer 2£439 GBP
Retailer 12£638 GBP
Retailer 6£746 GBP
Retailer 14£845 GBP
Retailer 13£997 GBP
Retailer 8£1,011 GBP
Brilliant Earth£1,584 GBP

35 data points across 14 retailers

19 retailers£203 GBP to £1,584 GBP

A
Cheapest Retailer
-
£203 GBP
$270 USD
A
Retailer 2
-
£230 GBP
$306 USD
View
Final sale: no returns
A
Retailer 3
-
£235 GBP
$313 USD
View
A
Retailer 4
-
£251 GBP
$334 USD
View
A
Retailer 5
-
£251 GBP
$334 USD
View
A
Retailer 6
-
£267 GBP
View
A
Retailer 7
-
£372 GBP
$495 USD
View
A
Retailer 8
-
£410 GBP
€520 EUR
View
A
Retailer 9
-
£417 GBP
$555 USD
View
B+
Retailer 10
-
£431 GBP
ZAR 9,278 ZAR
View
A
Retailer 11
-
£433 GBP
$576 USD
View
B+
Retailer 12
-
£439 GBP
View
B+
Retailer 13
-
£638 GBP
$850 USD
View
B+
Retailer 14
-
£746 GBP
SGD 1,342 SGD
View
B+
Retailer 15
-
£806 GBP
$1,074 USD
View
B+
Retailer 16
-
£845 GBP
$1,125 USD
View
B
Retailer 17
-
£997 GBP
$1,328 USD
View
B
Retailer 18
-
£1,011 GBP
View
Most Expensive
B
Brilliant Earth
21590127A · Oct 28
£1,584 GBP
$2,110 USD
View
18 more retailers have this diamond
Prices start from £203 GBPSave up to £1,382 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
1.00ct Heart
£203 GBP