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Heart|Lab Grown|IGI

1.48ct G SI1 Heart Lab Grown Diamond

EX • G/SI1 • IGI LG684503490

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG684503490

Diamond specifications and retailer prices

From £191 GBP
As of November 6, 2026
Save £759 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £950 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.48ct lab-grown heart diamond

This 1.48ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG684503490 or 684503490. Listed at 17 retailers as of November 2, 2026, with prices from £191 to £950, a £759 spread on the same certified stone. MOH London lists it at £950. 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

1.48
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG684503490
Dimensions7.00 × 7.84 × 4.67 mm
L/W Ratio1.12
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
7.00 mm7.84 mm1.48 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG684503490
Side View
Table 63.0%Crown 34.7°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 59.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £950 GBP|Low: £184 GBP|High: £1,158 GBP|Avg: £503 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£191 GBP
Retailer 10£214 GBP
Retailer 7£237 GBP
Retailer 5£355 GBP
Retailer 8£397 GBP
Retailer 9£433 GBP
Retailer 2£446 GBP
Retailer 4£710 GBP
Retailer 3£728 GBP
MOH London£950 GBP

46 data points across 10 retailers

17 retailers£191 GBP to £950 GBP

A
Cheapest Retailer
-
£191 GBP
A
Retailer 2
-
£214 GBP
View
Final sale: no returns
A
Retailer 3
-
£222 GBP
View
A
Retailer 4
-
£237 GBP
View
Retailer 5
-
£237 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£355 GBP
View
A
Retailer 7
-
£397 GBP
View
B+
Retailer 8
-
£433 GBP
View
B+
Retailer 9
-
£436 GBP
View
B+
Retailer 10
-
£446 GBP
View
B+
Retailer 11
-
£608 GBP
View
B+
Retailer 12
-
£710 GBP
View
B+
Retailer 13
-
£710 GBP
View
B
Retailer 14
-
£728 GBP
View
B
Retailer 15
-
£762 GBP
View
B
Retailer 16
-
£800 GBP
View
Most Expensive
B
MOH London
LG684503490 · Nov 2
£950 GBP
View
16 more retailers have this diamond
Prices start from £191 GBPSave up to £759 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
1.48ct Heart
£191 GBP