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Heart|Lab Grown|IGI

1.02ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG844657987

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG844657987

Diamond specifications and retailer prices

From £121 GBP
As of November 6, 2026
Save £551 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £672 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.02ct lab-grown heart diamond

This 1.02ct 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 LG844657987 or 844657987. Listed at 12 retailers as of November 6, 2026, with prices from £121 to £672, a £551 spread on the same certified stone. Brilliant Earth lists it at £672. 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

1.02
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844657987
Dimensions6.43 × 6.97 × 3.90 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.43 mm6.97 mm1.02 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG844657987
Side View
Table 70.0%Crown 32.6°Girdle: STK-THKPavilion 41°Culet: NoneDepth 56.0%

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: Nov 6
Current: £672 GBP|Low: £121 GBP|High: £672 GBP|Avg: £306 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 6, 2026
Retailer 7£121 GBP
Retailer 3£152 GBP
Retailer 2£173 GBP
Retailer 4£228 GBP
Retailer 5£229 GBP
Retailer 11£229 GBP
Retailer 9£249 GBP
Retailer 8£255 GBP
Retailer 10£347 GBP
Retailer 12£372 GBP
Retailer 6£627 GBP
Brilliant Earth£672 GBP

13 data points across 12 retailers

12 retailers£121 GBP to £672 GBP

A
Cheapest Retailer
-
£121 GBP
Final sale: no returns
B+
Retailer 2
-
£152 GBP
View
B+
Retailer 3
-
£173 GBP
View
Retailer 4
-
£228 GBP
View
Price last confirmed 12 days ago
B+
Retailer 5
-
£229 GBP
View
B+
Retailer 6
-
£229 GBP
View
B+
Retailer 7
-
£249 GBP
View
B+
Retailer 8
-
£255 GBP
View
B
Retailer 9
-
£347 GBP
View
B
Retailer 10
-
£372 GBP
View
B
Retailer 11
-
£627 GBP
View
Most Expensive
C
Brilliant Earth
22235265A · Nov 6
£672 GBP
$900 USD
View
11 more retailers have this diamond
Prices start from £121 GBPSave up to £551 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
1.02ct Heart
£121 GBP