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Heart|Lab Grown|IGI

1.23ct E VVS1 Heart Lab Grown Diamond

VG • E/VVS1 • IGI LG831679941

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831679941

Diamond specifications and retailer prices

From £157 GBP
$210 USD
As of October 30, 2026
Save £1,112 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,269 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831679941 or 831679941. Listed at 13 retailers as of October 29, 2026, with prices from £157 to £1,269, a £1,112 spread on the same certified stone. Brilliant Earth lists it at £1,269. 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

1.23
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831679941
Dimensions6.69 × 7.78 × 4.00 mm
L/W Ratio1.16
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
6.69 mm7.78 mm1.23 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831679941
Side View
Table 61.0%Crown 31.7°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 51.4%

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 30
Current: £1,269 GBP|Low: £157 GBP|High: £1,269 GBP|Avg: £485 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
Retailer 13
October 31, 2026
Retailer 8£157 GBP
Retailer 4£176 GBP
Retailer 3£195 GBP
Retailer 10£239 GBP
Retailer 9£334 GBP
Retailer 2£357 GBP
Retailer 7£377 GBP
Retailer 12£428 GBP
Retailer 6£628 GBP
Retailer 5£633 GBP
Retailer 11£664 GBP
Retailer 13£666 GBP
Brilliant Earth£1,269 GBP

3 data points across 13 retailers

13 retailers£157 GBP to £1,269 GBP

A
Cheapest Retailer
-
£157 GBP
$210 USD
A
Retailer 2
-
£176 GBP
$236 USD
View
Final sale: no returns
A
Retailer 3
-
£195 GBP
$261 USD
View
A
Retailer 4
-
£239 GBP
View
B+
Retailer 5
-
£334 GBP
$448 USD
View
B+
Retailer 6
-
£357 GBP
View
B+
Retailer 7
-
£377 GBP
$505 USD
View
B+
Retailer 8
-
£428 GBP
$574 USD
View
B
Retailer 9
-
£628 GBP
$842 USD
View
B
Retailer 10
-
£633 GBP
SGD 1,147 SGD
View
B
Retailer 11
-
£664 GBP
$890 USD
View
B
Retailer 12
-
£666 GBP
$892 USD
View
Most Expensive
B
Brilliant Earth
22348803A · Oct 29
£1,269 GBP
$1,700 USD
View
12 more retailers have this diamond
Prices start from £157 GBPSave up to £1,112 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
1.23ct Heart
£157 GBP