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Round|Lab Grown|IGI

1.50ct K SI1 Round Lab Grown Diamond

VG • K/SI1 • IGI LG407950682

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407950682

Diamond specifications and retailer prices

From £694 GBP
As of November 5, 2026
Save £2,036 GBP (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,730 GBP at MOH London · As of November 3, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407950682 or 407950682. Listed at 9 retailers as of November 3, 2026, with prices from £694 to £2,730, a £2,036 spread on the same certified stone. MOH London lists it at £2,730. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407950682
Dimensions7.43 × 7.50 × 4.33 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.43 mm7.50 mm1.50 ctK / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG407950682
Side View
Table 62.0%Crown 31.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 58.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,730 GBP|Low: £666 GBP|High: £2,767 GBP|Avg: £1,450 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4£694 GBP
Retailer 5£805 GBP
Retailer 7£805 GBP
Retailer 2£936 GBP
Retailer 8£1,186 GBP
Retailer 6£1,289 GBP
Retailer 3£1,791 GBP
Retailer 9£2,304 GBP
MOH London£2,730 GBP

18 data points across 9 retailers

9 retailers£694 GBP to £2,730 GBP

B+
Cheapest Retailer
-
£694 GBP
B+
Retailer 2
-
£755 GBP
View
B+
Retailer 3
-
£805 GBP
View
Retailer 4
-
£805 GBP
View
Price last confirmed 25 days ago
B+
Retailer 5
-
£936 GBP
View
B
Retailer 6
-
£1,289 GBP
View
B
Retailer 7
-
£1,791 GBP
View
C
Retailer 8
-
£2,263 GBP
View
Most Expensive
C
MOH London
LG407950682 · Nov 3
£2,730 GBP
View
8 more retailers have this diamond
Prices start from £694 GBPSave up to £2,036 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.

B+
1.50ct Round
£694 GBP