Heart|Lab Grown|IGI

0.51ct E IF Heart Lab Grown Diamond

VG • E/IF • IGI LG840620855

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840620855

Diamond specifications and retailer prices

From £136 GBP
$182 USD
As of October 30, 2026
Save £713 GBP (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £848 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840620855 or 840620855. Listed at 14 retailers as of October 30, 2026, with prices from £136 to £848, a £713 spread on the same certified stone. Reve Diamonds lists it at £848. 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

0.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840620855
Dimensions5.05 × 5.54 × 3.11 mm
L/W Ratio1.10
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
5.05 mm5.54 mm0.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840620855
Side View
Table 61.0%Crown 35.9°Girdle: THN-STKPavilion 38.7°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: £302 GBP|Low: £136 GBP|High: £848 GBP|Avg: £362 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 31, 2026
Retailer 3£136 GBP
Retailer 10£152 GBP
Retailer 12£157 GBP
Retailer 11£237 GBP
Retailer 2£258 GBP
Retailer 8£291 GBP
Retailer 1£302 GBP
Retailer 13£305 GBP
Retailer 4£353 GBP
Retailer 7£373 GBP
Retailer 6£572 GBP
Retailer 5£582 GBP
Retailer 9£792 GBP
Reve Diamonds£848 GBP

6 data points across 14 retailers

14 retailers£136 GBP to £848 GBP

A
Cheapest Retailer
-
£136 GBP
$182 USD
A
Retailer 2
-
£152 GBP
$203 USD
View
Final sale: no returns
A
Retailer 3
-
£157 GBP
$211 USD
View
A
Retailer 4
-
£237 GBP
$318 USD
View
B+
Retailer 5
-
£258 GBP
$346 USD
View
B+
Retailer 6
-
£291 GBP
€371 EUR
View
B+
Retailer 7
-
£302 GBP
View
B+
Retailer 8
-
£305 GBP
ZAR 6,596 ZAR
View
B+
Retailer 9
-
£353 GBP
$473 USD
View
B+
Retailer 10
-
£373 GBP
$500 USD
View
B
Retailer 11
-
£572 GBP
$767 USD
View
B
Retailer 12
-
£582 GBP
$780 USD
View
B
Retailer 13
-
£792 GBP
View
Most Expensive
B
Reve Diamonds
D83AA3E1D · Oct 30
£848 GBP
$1,137 USD
View
13 more retailers have this diamond
Prices start from £136 GBPSave up to £713 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
0.51ct Heart
£136 GBP