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Round|Lab Grown|IGI

1.50ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG786621603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786621603

Diamond specifications and retailer prices

From £199 GBP
As of November 6, 2026
Save £642 GBP (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £841 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG786621603 or 786621603. Listed at 16 retailers as of November 5, 2026, with prices from £199 to £841, a £642 spread on the same certified stone. MOH London lists it at £841. 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

1.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle33°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786621603
Dimensions7.31 × 7.47 × 4.40 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.31 mm7.47 mm1.50 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateIGI LG786621603
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.5%

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: £841 GBP|Low: £199 GBP|High: £1,048 GBP|Avg: £470 GBP|-3.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£199 GBP
Retailer 2£293 GBP
Retailer 5£314 GBP
Retailer 7£321 GBP
Retailer 4£325 GBP
Retailer 3£373 GBP
Retailer 11£572 GBP
Retailer 6£581 GBP
Retailer 10£587 GBP
Retailer 8£646 GBP
MOH London£841 GBP

44 data points across 11 retailers

16 retailers£199 GBP to £841 GBP

Retailer 1
-
£149 GBP
Price last confirmed 27 days ago
Retailer 2
-
£172 GBP
View
Price last confirmed 24 days ago
Retailer 3
-
£184 GBP
View
Price last confirmed 38 days ago
B+
Retailer 4
-
£199 GBP
View
A
Retailer 5
-
£293 GBP
View
B+
Retailer 6
-
£314 GBP
View
B+
Retailer 7
-
£321 GBP
View
B+
Retailer 8
-
£325 GBP
View
Retailer 9
-
£373 GBP
View
Price last confirmed 11 days ago
B+
Retailer 10
-
£470 GBP
View
Retailer 11
-
£572 GBP
View
Price last confirmed 12 days ago
B
Retailer 12
-
£581 GBP
View
B
Retailer 13
-
£587 GBP
View
Retailer 14
-
£593 GBP
View
Price last confirmed 30 days ago
B
Retailer 15
-
£646 GBP
View
Most Expensive
B
MOH London
LG786621603 · Nov 5
£841 GBP
View
15 more retailers have this diamond
Prices start from £199 GBPSave up to £642 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
1.50ct Round
£199 GBP