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Heart|Lab Grown|IGI

1.20ct E VVS1 Heart Lab Grown Diamond

ID • E/VVS1 • IGI LG778641337

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG778641337

Diamond specifications and retailer prices

From £164 GBP
$220 USD
As of October 30, 2026
Save £1,239 GBP (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,403 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.2ct lab-grown heart diamond

This 1.2ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG778641337 or 778641337. Listed at 12 retailers as of October 30, 2026, with prices from £164 to £1,403, a £1,239 spread on the same certified stone. Do Amore Diamonds lists it at £1,403. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778641337
Dimensions6.58 × 7.52 × 4.22 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
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
6.58 mm7.52 mm1.20 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778641337
Side View
Table 58.0%Crown 33.8°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 56.1%

Caratlytics Score

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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: £1,403 GBP|Low: £127 GBP|High: £1,403 GBP|Avg: £465 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
October 27, 2026
Retailer 10£164 GBP
Retailer 5£193 GBP
Retailer 13£217 GBP
Retailer 14£246 GBP
Retailer 6£334 GBP
Retailer 8£335 GBP
Retailer 16£348 GBP
Retailer 3£375 GBP
Retailer 15£411 GBP
Retailer 2£489 GBP
Retailer 11£523 GBP
Retailer 7£638 GBP
Retailer 4£662 GBP
Retailer 12£769 GBP
Retailer 9£804 GBP
Do Amore Diamonds£1,403 GBP

18 data points across 16 retailers

12 retailers£164 GBP to £1,403 GBP

Retailer 1
-
£156 GBP
$209 USD
Price last confirmed 31 days ago
A
Retailer 2
-
£164 GBP
$220 USD
View
Final sale: no returns
Retailer 3
-
£181 GBP
$243 USD
View
Price last confirmed 32 days ago
Retailer 4
-
£191 GBP
$256 USD
View
Price last confirmed 33 days ago
A
Retailer 5
-
£217 GBP
$290 USD
View
B+
Retailer 6
-
£246 GBP
$330 USD
View
B+
Retailer 7
-
£489 GBP
A$1,009 AUD
View
B+
Retailer 8
-
£523 GBP
$701 USD
View
Retailer 9
-
£622 GBP
$834 USD
View
Price last confirmed 30 days ago
B
Retailer 10
-
£769 GBP
$1,030 USD
View
B
Retailer 11
-
£804 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5535EE115 · Oct 31
£1,403 GBP
$1,880 USD
View
11 more retailers have this diamond
Prices start from £164 GBPSave up to £1,239 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
1.20ct Heart
£164 GBP