CaratHunter
Plans
Round|Lab Grown|IGI

1.78ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG582393761

Shape and cutting style on the report: Round brilliant

Certificate IGI LG582393761

Diamond specifications and retailer prices

From £157 GBP
$210 USD
As of October 29, 2026
Save £706 GBP (82%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £863 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG582393761 or 582393761. Listed at 9 retailers as of October 26, 2026, with prices from £157 to £863, a £706 spread on the same certified stone. MOH London lists it at £863. 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

1.78
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG582393761
Dimensions7.74 × 7.72 × 4.80 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.74 mm7.72 mm1.78 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG582393761
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

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: Oct 29
Current: £863 GBP|Low: £130 GBP|High: £1,134 GBP|Avg: £518 GBP|-2.2%
MOH London
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
October 29, 2026
Retailer 12£157 GBP
Retailer 13£178 GBP
Retailer 11£182 GBP
Retailer 10£334 GBP
Retailer 2£373 GBP
Retailer 4£420 GBP
Retailer 5£460 GBP
Retailer 14£568 GBP
Retailer 3£602 GBP
Retailer 8£628 GBP
Retailer 7£649 GBP
Retailer 9£691 GBP
MOH London£863 GBP
Retailer 6£1,134 GBP

32 data points across 14 retailers

9 retailers£157 GBP to £863 GBP

A
Cheapest Retailer
-
£157 GBP
$210 USD
A
Retailer 2
-
£178 GBP
$238 USD
View
Final sale: no returns
A
Retailer 3
-
£182 GBP
$244 USD
View
B+
Retailer 4
-
£334 GBP
$448 USD
View
A
Retailer 5
-
£373 GBP
View
B
Retailer 6
-
£628 GBP
$842 USD
View
B
Retailer 7
-
£649 GBP
$870 USD
View
B+
Retailer 8
-
£691 GBP
$926 USD
View
Most Expensive
B
MOH London
LG582393761 · Oct 26
£863 GBP
View
8 more retailers have this diamond
Prices start from £157 GBPSave up to £706 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
1.78ct Round
£157 GBP