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Marquise|Lab Grown|IGI

1.30ct F VS1 Marquise Lab Grown Diamond

VG • F/VS1 • IGI LG848650830

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG848650830

Diamond specifications and retailer prices

From £174 GBP
As of November 6, 2026
Save £693 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £889 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.3ct lab-grown marquise diamond

This 1.3ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG848650830 or 848650830. Listed at 13 retailers as of November 5, 2026, with a 398% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848650830
Dimensions10.85 × 5.61 × 3.67 mm
L/W Ratio1.93
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.85 mm5.61 mm1.30 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848650830
Side View
Table 61.0%Crown 35.7°Girdle: STK-THKPavilion 41.2°Culet: NoneDepth 65.4%

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: £338 GBP|Low: £174 GBP|High: £870 GBP|Avg: £446 GBP|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 10£174 GBP
Retailer 6£221 GBP
Retailer 11£250 GBP
Retailer 5£315 GBP
Retailer 1£338 GBP
Retailer 3£371 GBP
Retailer 9£453 GBP
Retailer 8£486 GBP
Retailer 12£539 GBP
Retailer 2£560 GBP
Retailer 4£637 GBP
Retailer 7£867 GBP

19 data points across 12 retailers

13 retailers£174 GBP to £867 GBP

A
Cheapest Retailer
-
£174 GBP
A
Retailer 2
-
£221 GBP
View
B+
Retailer 3
-
£250 GBP
View
A
Retailer 4
-
£315 GBP
View
A
Retailer 5
-
£338 GBP
View
B+
Retailer 6
-
£371 GBP
View
B+
Retailer 7
-
£453 GBP
View
B+
Retailer 8
-
£486 GBP
View
Retailer 9
-
£539 GBP
View
Price last confirmed 10 days ago
B+
Retailer 10
-
£560 GBP
View
B
Retailer 11
-
£637 GBP
View
B
Retailer 12
-
£867 GBP
View
Most Expensive
Brilliant Earth
22279427A · Oct 28
£889 GBP
$1,190 USD
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from £174 GBPSave up to £693 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
1.30ct Marquise
£174 GBP