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Round|Lab Grown|IGI

1.66ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG483102895

Shape and cutting style on the report: Round brilliant

Certificate IGI LG483102895

Diamond specifications and retailer prices

From £215 GBP
$289 USD
As of November 1, 2026
Save £854 GBP (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,069 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.66ct lab-grown round diamond

This 1.66ct 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 LG483102895 or 483102895. Listed at 15 retailers as of November 1, 2026, with prices from £215 to £1,069, a £854 spread on the same certified stone. MOH London lists it at £1,069. 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

1.66
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG483102895
Dimensions7.68 × 7.61 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
7.68 mm7.61 mm1.66 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG483102895
Side View
Table 58.5%Crown 34.2°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 61.0%

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: £1,069 GBP|Low: £206 GBP|High: £1,082 GBP|Avg: £458 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
November 2, 2026
Retailer 9£215 GBP
Retailer 4£240 GBP
Retailer 13£250 GBP
Retailer 5£267 GBP
Retailer 10£267 GBP
Retailer 11£350 GBP
Retailer 2£430 GBP
Retailer 12£465 GBP
Retailer 6£467 GBP
Retailer 7£510 GBP
Retailer 8£820 GBP
Retailer 3£858 GBP
MOH London£1,069 GBP

43 data points across 13 retailers

15 retailers£215 GBP to £1,069 GBP

A
Cheapest Retailer
-
£215 GBP
$289 USD
A
Retailer 2
-
£240 GBP
$322 USD
View
Final sale: no returns
A
Retailer 3
-
£250 GBP
$335 USD
View
Retailer 4
-
£267 GBP
$358 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£267 GBP
$358 USD
View
A
Retailer 6
-
£296 GBP
HK$3,100 HKD
View
B+
Retailer 7
-
£350 GBP
$470 USD
View
A
Retailer 8
-
£430 GBP
€550 EUR
View
B+
Retailer 9
-
£465 GBP
$624 USD
View
B+
Retailer 10
-
£467 GBP
View
Retailer 11
-
£510 GBP
$685 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
£750 GBP
$1,006 USD
View
B
Retailer 13
-
£820 GBP
$1,100 USD
View
B
Retailer 14
-
£858 GBP
$1,151 USD
View
Most Expensive
B
MOH London
LG483102895 · Nov 1
£1,069 GBP
View
14 more retailers have this diamond
Prices start from £215 GBPSave up to £854 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
1.66ct Round
£215 GBP