CaratHunter
Plans
Radiant|Lab Grown|IGI

1.61ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG629440726

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG629440726

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of November 2, 2026
Save £720 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £870 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.61ct lab-grown radiant diamond

This 1.61ct lab-grown radiant 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 LG629440726 or 629440726. Listed at 15 retailers as of November 1, 2026, with prices from £150 to £870, a £720 spread on the same certified stone. MOH London lists it at £870. 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

1.61
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629440726
Dimensions8.39 × 5.86 × 3.86 mm
L/W Ratio1.43
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
8.39 mm5.86 mm1.61 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629440726
Side View
Table 64.0%Crown 42.7°Girdle: Slightly ThickPavilion 34.8°Culet: NoneDepth 65.9%

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 2
Current: £870 GBP|Low: £149 GBP|High: £870 GBP|Avg: £368 GBP|+12.6%
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
November 2, 2026
Retailer 5£150 GBP
Retailer 6£168 GBP
Retailer 3£174 GBP
Retailer 11£186 GBP
Retailer 7£192 GBP
Retailer 15£250 GBP
Retailer 2£339 GBP
Retailer 8£341 GBP
Retailer 12£380 GBP
Retailer 4£384 GBP
Retailer 10£480 GBP
Retailer 13£598 GBP
Retailer 14£697 GBP
Retailer 9£797 GBP
MOH London£870 GBP

45 data points across 15 retailers

15 retailers£150 GBP to £870 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£168 GBP
$225 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$233 USD
View
A
Retailer 4
-
£186 GBP
$250 USD
View
Retailer 5
-
£192 GBP
$258 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£250 GBP
$335 USD
View
A
Retailer 7
-
£339 GBP
€433 EUR
View
A
Retailer 8
-
£341 GBP
View
A
Retailer 9
-
£380 GBP
$510 USD
View
A
Retailer 10
-
£384 GBP
$515 USD
View
B+
Retailer 11
-
£480 GBP
$644 USD
View
B+
Retailer 12
-
£598 GBP
$802 USD
View
B+
Retailer 13
-
£697 GBP
$935 USD
View
B
Retailer 14
-
£797 GBP
$1,070 USD
View
Most Expensive
B
MOH London
LG629440726 · Nov 1
£870 GBP
View
14 more retailers have this diamond
Prices start from £150 GBPSave up to £720 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
1.61ct Radiant
£150 GBP