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Heart|Lab Grown|IGI

1.56ct E VVS1 Heart Lab Grown Diamond

ID • E/VVS1 • IGI LG778640156

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG778640156

Diamond specifications and retailer prices

From £190 GBP
$253 USD
As of October 27, 2026
Save £1,072 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,262 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.56ct lab-grown heart diamond

This 1.56ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG778640156 or 778640156. Listed at 22 retailers as of October 27, 2026, with prices from £190 to £1,262, a £1,072 spread on the same certified stone. Brilliant Earth lists it at £1,262. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.9°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778640156
Dimensions7.31 × 8.08 × 4.61 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.31 mm8.08 mm1.56 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778640156
Side View
Table 56.0%Crown 29.9°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 57.1%

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 27
Current: £1,262 GBP|Low: £182 GBP|High: £1,262 GBP|Avg: £530 GBP
Brilliant Earth
Retailer 2
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October 29, 2026
Retailer 4£190 GBP
Retailer 12£213 GBP
Retailer 9£220 GBP
Retailer 5£236 GBP
Retailer 14£236 GBP
Retailer 17£357 GBP
Retailer 13£386 GBP
Retailer 7£393 GBP
Retailer 16£405 GBP
Retailer 10£435 GBP
Retailer 2£447 GBP
Retailer 8£494 GBP
Retailer 18£549 GBP
Retailer 3£592 GBP
Retailer 6£757 GBP
Retailer 20£781 GBP
Retailer 11£796 GBP
Retailer 19£838 GBP
Retailer 15£949 GBP
Retailer 21£1,005 GBP
Brilliant Earth£1,262 GBP

34 data points across 21 retailers

22 retailers£190 GBP to £1,262 GBP

A
Cheapest Retailer
-
£190 GBP
$253 USD
A
Retailer 2
-
£213 GBP
$283 USD
View
Final sale: no returns
A
Retailer 3
-
£220 GBP
$293 USD
View
A
Retailer 4
-
£236 GBP
$314 USD
View
A
Retailer 5
-
£236 GBP
$314 USD
View
A
Retailer 6
-
£357 GBP
$475 USD
View
A
Retailer 7
-
£386 GBP
€489 EUR
View
A
Retailer 8
-
£393 GBP
$524 USD
View
A
Retailer 9
-
£405 GBP
ZAR 8,703 ZAR
View
A
Retailer 10
-
£435 GBP
$579 USD
View
B+
Retailer 11
-
£447 GBP
View
B+
Retailer 12
-
£494 GBP
$658 USD
View
B+
Retailer 13
-
£549 GBP
A$1,124 AUD
View
B+
Retailer 14
-
£592 GBP
$788 USD
View
B
Retailer 15
-
£757 GBP
$1,008 USD
View
B+
Retailer 16
-
£781 GBP
SGD 1,406 SGD
View
B
Retailer 17
-
£796 GBP
$1,059 USD
View
B
Retailer 18
-
£838 GBP
$1,116 USD
View
B+
Retailer 19
-
£927 GBP
$1,234 USD
View
B
Retailer 20
-
£949 GBP
View
B
Retailer 21
-
£1,005 GBP
$1,338 USD
View
Most Expensive
B
Brilliant Earth
21417846A · Oct 28
£1,262 GBP
$1,680 USD
View
21 more retailers have this diamond
Prices start from £190 GBPSave up to £1,072 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
1.56ct Heart
£190 GBP