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Round|Lab Grown|IGI

1.33ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG763605130

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763605130

Diamond specifications and retailer prices

From £134 GBP
As of November 1, 2026
Save £644 GBP (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £778 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.33ct lab-grown round diamond

This 1.33ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG763605130 or 763605130. Listed at 12 retailers as of November 1, 2026, with prices from £134 to £778, a £644 spread on the same certified stone. MOH London lists it at £778. 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

1.33
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763605130
Dimensions6.95 × 6.90 × 4.34 mm
L/W Ratio1.01
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
6.95 mm6.90 mm1.33 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG763605130
Side View
Table 60.0%Crown 37.5°Girdle: STK-THKPavilion 40.7°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £778 GBP|Low: £129 GBP|High: £801 GBP|Avg: £360 GBP|-2.8%
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 8£134 GBP
Retailer 9£150 GBP
Retailer 3£167 GBP
Retailer 2£285 GBP
Retailer 11£295 GBP
Retailer 7£298 GBP
Retailer 12£327 GBP
Retailer 10£355 GBP
Retailer 5£396 GBP
Retailer 6£439 GBP
Retailer 4£755 GBP
MOH London£778 GBP

37 data points across 12 retailers

12 retailers£134 GBP to £778 GBP

A
Cheapest Retailer
-
£134 GBP
A
Retailer 2
-
£150 GBP
View
Final sale: no returns
Retailer 3
-
£167 GBP
View
Price last confirmed 12 days ago
B+
Retailer 4
-
£285 GBP
View
B+
Retailer 5
-
£295 GBP
View
B+
Retailer 6
-
£298 GBP
View
B+
Retailer 7
-
£327 GBP
View
B+
Retailer 8
-
£355 GBP
View
B+
Retailer 9
-
£396 GBP
View
B+
Retailer 10
-
£439 GBP
View
B
Retailer 11
-
£755 GBP
View
Most Expensive
B
MOH London
LG763605130 · Nov 2
£778 GBP
View
11 more retailers have this diamond
Prices start from £134 GBPSave up to £644 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
1.33ct Round
£134 GBP