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Round|Lab Grown|IGI

1.59ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG783646945

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783646945

Diamond specifications and retailer prices

From £156 GBP
$210 USD
As of November 1, 2026
Save £622 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £779 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.59ct lab-grown round diamond

This 1.59ct 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 LG783646945 or 783646945. Listed at 17 retailers as of November 1, 2026, with prices from £156 to £779, a £622 spread on the same certified stone. MOH London lists it at £779. 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

1.59
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783646945
Dimensions7.50 × 7.47 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.50 mm7.47 mm1.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783646945
Side View
Table 59.0%Crown 35°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.7%

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: £779 GBP|Low: £156 GBP|High: £909 GBP|Avg: £467 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 7£156 GBP
Retailer 8£194 GBP
Retailer 4£324 GBP
Retailer 9£334 GBP
Retailer 2£358 GBP
Retailer 10£387 GBP
Retailer 3£511 GBP
Retailer 6£589 GBP
Retailer 5£730 GBP
MOH London£779 GBP

41 data points across 10 retailers

17 retailers£156 GBP to £779 GBP

A
Cheapest Retailer
-
£156 GBP
$210 USD
A
Retailer 2
-
£182 GBP
$244 USD
View
Retailer 3
-
£194 GBP
$261 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
£194 GBP
$261 USD
View
A
Retailer 5
-
£324 GBP
€414 EUR
View
B+
Retailer 6
-
£334 GBP
$448 USD
View
A
Retailer 7
-
£348 GBP
$467 USD
View
A
Retailer 8
-
£358 GBP
View
A
Retailer 9
-
£387 GBP
$519 USD
View
B+
Retailer 10
-
£511 GBP
$686 USD
View
Retailer 11
-
£570 GBP
$765 USD
View
Price last confirmed 48 days ago
B
Retailer 12
-
£585 GBP
$785 USD
View
Retailer 13
-
£589 GBP
$790 USD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
£625 GBP
$839 USD
View
B
Retailer 15
-
£665 GBP
$892 USD
View
B
Retailer 16
-
£730 GBP
$980 USD
View
Most Expensive
B
MOH London
LG783646945 · Nov 1
£779 GBP
View
16 more retailers have this diamond
Prices start from £156 GBPSave up to £622 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
1.59ct Round
£156 GBP