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Heart|Lab Grown|IGI

1.90ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG512220502

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG512220502

Diamond specifications and retailer prices

From £268 GBP
As of November 6, 2026
Save £1,026 GBP (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,294 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.9ct lab-grown heart diamond

This 1.9ct lab-grown heart sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512220502 or 512220502. Listed at 14 retailers as of November 5, 2026, with prices from £268 to £1,294, a £1,026 spread on the same certified stone. MOH London lists it at £1,294. 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

1.90
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle43.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512220502
Dimensions8.91 × 7.43 × 5.13 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.91 mm7.43 mm1.90 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512220502
Side View
Table 60.0%Crown 35.4°Girdle: MED-THKPavilion 43.5°Culet: NoneDepth 57.6%

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: £1,294 GBP|Low: £257 GBP|High: £1,606 GBP|Avg: £639 GBP|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 9£268 GBP
Retailer 5£299 GBP
Retailer 13£311 GBP
Retailer 3£332 GBP
Retailer 10£332 GBP
Retailer 7£445 GBP
Retailer 12£533 GBP
Retailer 4£533 GBP
Retailer 2£592 GBP
Retailer 8£974 GBP
Retailer 6£1,016 GBP
Retailer 11£1,068 GBP
MOH London£1,294 GBP

44 data points across 13 retailers

14 retailers£268 GBP to £1,294 GBP

A
Cheapest Retailer
-
£268 GBP
A
Retailer 2
-
£299 GBP
View
Final sale: no returns
A
Retailer 3
-
£311 GBP
View
Retailer 4
-
£332 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£332 GBP
View
B+
Retailer 6
-
£445 GBP
View
B+
Retailer 7
-
£533 GBP
View
B+
Retailer 8
-
£533 GBP
View
B+
Retailer 9
-
£592 GBP
View
B
Retailer 10
-
£774 GBP
View
B
Retailer 11
-
£974 GBP
View
B
Retailer 12
-
£1,016 GBP
View
B
Retailer 13
-
£1,068 GBP
View
Most Expensive
B
MOH London
LG512220502 · Nov 5
£1,294 GBP
View
13 more retailers have this diamond
Prices start from £268 GBPSave up to £1,026 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
1.90ct Heart
£268 GBP