CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG830613024

Shape and cutting style on the report: Round brilliant

Certificate IGI LG830613024

Diamond specifications and retailer prices

From £135 GBP
As of November 5, 2026
Save £710 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £845 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.51ct lab-grown round diamond

This 1.51ct 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 top-tier cut grade and certified by IGI LG830613024 or 830613024. Listed at 20 retailers as of November 5, 2026, with prices from £135 to £845, a £710 spread on the same certified stone. Reve Diamonds lists it at £845. 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

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830613024
Dimensions7.43 × 7.39 × 4.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.43 mm7.39 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830613024
Side View
Table 59.0%Crown 33.7°Girdle: MediumPavilion 40.4°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £190 GBP|Low: £135 GBP|High: £892 GBP|Avg: £423 GBP|-4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Reve Diamonds
November 6, 2026
Retailer 2£135 GBP
Retailer 11£162 GBP
Retailer 7£168 GBP
Retailer 17£168 GBP
Retailer 8£180 GBP
Retailer 1£190 GBP
Retailer 16£227 GBP
Retailer 18£299 GBP
Retailer 12£304 GBP
Retailer 14£307 GBP
Retailer 9£316 GBP
Retailer 10£426 GBP
Retailer 5£432 GBP
Retailer 4£528 GBP
Retailer 19£540 GBP
Retailer 15£548 GBP
Retailer 13£580 GBP
Retailer 6£713 GBP
Retailer 3£837 GBP
Reve Diamonds£845 GBP

24 data points across 20 retailers

20 retailers£135 GBP to £845 GBP

A
Cheapest Retailer
-
£135 GBP
A
Retailer 2
-
£162 GBP
View
Final sale: no returns
A
Retailer 3
-
£168 GBP
View
A
Retailer 4
-
£168 GBP
View
Retailer 5
-
£180 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£190 GBP
View
B+
Retailer 7
-
£227 GBP
View
A
Retailer 8
-
£299 GBP
View
A
Retailer 9
-
£304 GBP
View
A
Retailer 10
-
£307 GBP
View
A
Retailer 11
-
£316 GBP
View
B+
Retailer 12
-
£426 GBP
View
B+
Retailer 13
-
£432 GBP
View
B+
Retailer 14
-
£528 GBP
View
B+
Retailer 15
-
£540 GBP
View
B+
Retailer 16
-
£548 GBP
View
B+
Retailer 17
-
£580 GBP
View
B
Retailer 18
-
£713 GBP
View
B
Retailer 19
-
£837 GBP
View
Most Expensive
B
Reve Diamonds
774424059 · Nov 6
£845 GBP
$1,138 USD
View
19 more retailers have this diamond
Prices start from £135 GBPSave up to £710 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
1.51ct Round
£135 GBP