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Round|Lab Grown|IGI

1.59ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG697509689

Shape and cutting style on the report: Round brilliant

Certificate IGI LG697509689

Diamond specifications and retailer prices

From £139 GBP
$187 USD
As of November 1, 2026
Save £670 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £809 GBP at MOH London · As of November 2, 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 LG697509689 or 697509689. Listed at 14 retailers as of November 1, 2026, with prices from £139 to £809, a £670 spread on the same certified stone. MOH London lists it at £809. 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 angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG697509689
Dimensions7.53 × 7.56 × 4.55 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
7.53 mm7.56 mm1.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG697509689
Side View
Table 59.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.3%

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: £809 GBP|Low: £139 GBP|High: £1,051 GBP|Avg: £443 GBP
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
Retailer 15
Retailer 16
November 3, 2026
Retailer 12£139 GBP
Retailer 11£162 GBP
Retailer 6£173 GBP
Retailer 16£200 GBP
Retailer 13£294 GBP
Retailer 3£304 GBP
Retailer 2£313 GBP
Retailer 9£318 GBP
Retailer 15£342 GBP
Retailer 14£368 GBP
Retailer 5£556 GBP
Retailer 10£558 GBP
Retailer 4£578 GBP
MOH London£809 GBP
Retailer 7£832 GBP
Retailer 8£1,051 GBP

7 data points across 16 retailers

14 retailers£139 GBP to £809 GBP

A
Cheapest Retailer
-
£139 GBP
$187 USD
A
Retailer 2
-
£162 GBP
$217 USD
View
A
Retailer 3
-
£173 GBP
$232 USD
View
A
Retailer 4
-
£200 GBP
HK$2,100 HKD
View
A
Retailer 5
-
£294 GBP
€376 EUR
View
B+
Retailer 6
-
£304 GBP
$408 USD
View
A
Retailer 7
-
£313 GBP
View
A
Retailer 8
-
£318 GBP
View
A
Retailer 9
-
£342 GBP
$459 USD
View
A
Retailer 10
-
£368 GBP
$494 USD
View
B+
Retailer 11
-
£556 GBP
$746 USD
View
B+
Retailer 12
-
£558 GBP
$749 USD
View
B
Retailer 13
-
£578 GBP
$775 USD
View
Most Expensive
B
MOH London
LG697509689 · Nov 2
£809 GBP
View
13 more retailers have this diamond
Prices start from £139 GBPSave up to £670 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
£139 GBP