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Heart|Lab Grown|IGI

3.00ct G SI1 Heart Lab Grown Diamond

EX • G/SI1 • IGI LG698508575

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG698508575

Diamond specifications and retailer prices

From £309 GBP
As of November 6, 2026
Save £1,097 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,405 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3ct lab-grown heart diamond

This 3ct lab-grown heart sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG698508575 or 698508575. Listed at 12 retailers as of November 1, 2026, with prices from £309 to £1,405, a £1,097 spread on the same certified stone. MOH London lists it at £1,405. 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

3.00
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG698508575
Dimensions8.83 × 10.09 × 5.66 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.83 mm10.09 mm3.00 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG698508575
Side View
Table 61.0%Crown 37°Girdle: MED-THKPavilion 39°Culet: NoneDepth 56.1%

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: Nov 6
Current: £1,405 GBP|Low: £306 GBP|High: £1,469 GBP|Avg: £708 GBP|-3.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£309 GBP
Retailer 5£345 GBP
Retailer 3£383 GBP
Retailer 4£387 GBP
Retailer 7£493 GBP
Retailer 12£604 GBP
Retailer 10£607 GBP
Retailer 2£623 GBP
Retailer 9£793 GBP
Retailer 8£1,073 GBP
Retailer 6£1,230 GBP
MOH London£1,405 GBP

46 data points across 12 retailers

12 retailers£309 GBP to £1,405 GBP

A
Cheapest Retailer
-
£309 GBP
A
Retailer 2
-
£345 GBP
View
A
Retailer 3
-
£383 GBP
View
Retailer 4
-
£387 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£493 GBP
View
B+
Retailer 6
-
£604 GBP
View
A
Retailer 7
-
£607 GBP
View
A
Retailer 8
-
£623 GBP
View
A
Retailer 9
-
£793 GBP
View
B+
Retailer 10
-
£1,073 GBP
View
B
Retailer 11
-
£1,230 GBP
View
Most Expensive
B
MOH London
LG698508575 · Nov 1
£1,405 GBP
View
11 more retailers have this diamond
Prices start from £309 GBPSave up to £1,097 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
3.00ct Heart
£309 GBP