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Round|Lab Grown|IGI

1.79ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG787619994

Shape and cutting style on the report: Round brilliant

Certificate IGI LG787619994

Diamond specifications and retailer prices

From £174 GBP
$233 USD
As of November 1, 2026
Save £691 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £865 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.79ct lab-grown round diamond

This 1.79ct 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 LG787619994 or 787619994. Listed at 13 retailers as of November 1, 2026, with prices from £174 to £865, a £691 spread on the same certified stone. MOH London lists it at £865. 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

1.79
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787619994
Dimensions7.76 × 7.71 × 4.78 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.76 mm7.71 mm1.79 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787619994
Side View
Table 59.0%Crown 36.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.9%

Caratlytics Score

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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 1
Current: £865 GBP|Low: £172 GBP|High: £1,373 GBP|Avg: £492 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9£174 GBP
Retailer 10£195 GBP
Retailer 3£216 GBP
Retailer 5£353 GBP
Retailer 12£366 GBP
Retailer 2£403 GBP
Retailer 11£412 GBP
Retailer 4£431 GBP
Retailer 8£561 GBP
Retailer 7£616 GBP
Retailer 6£813 GBP
MOH London£865 GBP

34 data points across 12 retailers

13 retailers£174 GBP to £865 GBP

A
Cheapest Retailer
-
£174 GBP
$233 USD
A
Retailer 2
-
£195 GBP
$261 USD
View
Final sale: no returns
Retailer 3
-
£216 GBP
$289 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£353 GBP
€451 EUR
View
B+
Retailer 5
-
£366 GBP
$491 USD
View
A
Retailer 6
-
£403 GBP
View
A
Retailer 7
-
£412 GBP
$552 USD
View
B+
Retailer 8
-
£431 GBP
$577 USD
View
B+
Retailer 9
-
£561 GBP
$752 USD
View
B+
Retailer 10
-
£616 GBP
$825 USD
View
Retailer 11
-
£634 GBP
$849 USD
View
Price last confirmed 48 days ago
B
Retailer 12
-
£813 GBP
$1,090 USD
View
Most Expensive
B
MOH London
LG787619994 · Nov 1
£865 GBP
View
12 more retailers have this diamond
Prices start from £174 GBPSave up to £691 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
1.79ct Round
£174 GBP