Heart|Lab Grown|IGI

0.30ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG816670734

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816670734

Diamond specifications and retailer prices

From £53 GBP
$70 USD
As of October 24, 2026
Save £363 GBP (87%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £416 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.3ct lab-grown heart diamond

This 0.3ct lab-grown heart sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816670734 or 816670734. Listed at 8 retailers as of October 24, 2026, with prices from £53 to £416, a £363 spread on the same certified stone. MOH London lists it at £416. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.30
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishGood
SymmetryVery Good
FluorescenceNone
Crown angle30.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816670734
Dimensions4.62 × 4.28 × 2.65 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
4.62 mm4.28 mm0.30 ctE / SI1
OriginLab Grown
CutIdeal
PolishGood
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816670734
Side View
Table 62.0%Crown 30.7°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 57.4%

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 24
Current: £416 GBP|Low: £90 GBP|High: £492 GBP|Avg: £222 GBP|-14.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 6£114 GBP
Retailer 2£121 GBP
Retailer 5£138 GBP
Retailer 3£145 GBP
Retailer 4£284 GBP
MOH London£416 GBP

19 data points across 6 retailers

8 retailers£53 GBP to £416 GBP

A
Cheapest Retailer
-
£53 GBP
$70 USD
A
Retailer 2
-
£60 GBP
$80 USD
View
A
Retailer 3
-
£70 GBP
$93 USD
View
Price last confirmed 32 days ago
B+
Retailer 4
-
£121 GBP
€154 EUR
View
B
Retailer 5
-
£138 GBP
$184 USD
View
B+
Retailer 6
-
£145 GBP
View
B
Retailer 7
-
£284 GBP
$378 USD
View
Most Expensive
B
MOH London
LG816670734 · Oct 26
£416 GBP
View
7 more retailers have this diamond
Prices start from £53 GBPSave up to £363 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
0.30ct Heart
£53 GBP