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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG841698184

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG841698184

Diamond specifications and retailer prices

From £140 GBP
$187 USD
As of October 29, 2026
Save £640 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £781 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG841698184 or 841698184. Listed at 11 retailers as of October 25, 2026, with prices from £140 to £781, a £640 spread on the same certified stone. Reve Diamonds lists it at £781. 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

1.00
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841698184
Dimensions5.76 × 6.83 × 4.16 mm
L/W Ratio1.19
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
5.76 mm6.83 mm1.00 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841698184
Side View
Table 54.0%Crown 34.1°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 60.9%

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 29
Current: £246 GBP|Low: £137 GBP|High: £781 GBP|Avg: £368 GBP|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Reve Diamonds
October 29, 2026
Retailer 3£140 GBP
Retailer 4£185 GBP
Retailer 8£217 GBP
Retailer 1£246 GBP
Retailer 9£258 GBP
Retailer 6£303 GBP
Retailer 7£480 GBP
Retailer 2£507 GBP
Retailer 5£666 GBP
Reve Diamonds£781 GBP

21 data points across 10 retailers

11 retailers£140 GBP to £781 GBP

A
Cheapest Retailer
-
£140 GBP
$187 USD
Final sale: no returns
A
Retailer 2
-
£185 GBP
View
B+
Retailer 3
-
£217 GBP
$289 USD
View
B+
Retailer 4
-
£246 GBP
View
B+
Retailer 5
-
£258 GBP
$344 USD
View
B
Retailer 6
-
£303 GBP
View
Retailer 7
-
£428 GBP
$570 USD
View
B
Retailer 8
-
£480 GBP
$639 USD
View
B
Retailer 9
-
£507 GBP
$675 USD
View
B
Retailer 10
-
£666 GBP
View
Most Expensive
B
Reve Diamonds
A2BC668FA · Oct 25
£781 GBP
$1,039 USD
View
10 more retailers have this diamond
Prices start from £140 GBPSave up to £640 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
£140 GBP