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Round|Lab Grown|IGI

1.23ct F VS2 Round Lab Grown Diamond

ID • F/VS2 • IGI LG851617161

Shape and cutting style on the report: Round brilliant

Certificate IGI LG851617161

Diamond specifications and retailer prices

From £181 GBP
HK$1,900 HKD
As of November 1, 2026
Save £546 GBP (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £727 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851617161 or 851617161. Listed at 12 retailers as of October 29, 2026, with prices from £181 to £727, a £546 spread on the same certified stone. MOH London lists it at £727. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851617161
Dimensions6.83 × 6.85 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.83 mm6.85 mm1.23 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851617161
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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 1
Current: £727 GBP|Low: £181 GBP|High: £727 GBP|Avg: £379 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9£181 GBP
Retailer 11£209 GBP
Retailer 8£264 GBP
Retailer 2£274 GBP
Retailer 4£284 GBP
Retailer 6£298 GBP
Retailer 5£382 GBP
Retailer 3£516 GBP
Retailer 7£517 GBP
Retailer 10£538 GBP
MOH London£727 GBP

6 data points across 11 retailers

12 retailers£181 GBP to £727 GBP

A
Cheapest Retailer
-
£181 GBP
HK$1,900 HKD
B+
Retailer 2
-
£209 GBP
$280 USD
View
A
Retailer 3
-
£264 GBP
€337 EUR
View
A
Retailer 4
-
£274 GBP
View
A
Retailer 5
-
£284 GBP
View
B+
Retailer 6
-
£298 GBP
$400 USD
View
B+
Retailer 7
-
£380 GBP
$510 USD
View
B+
Retailer 8
-
£382 GBP
$512 USD
View
B
Retailer 9
-
£516 GBP
SGD 935 SGD
View
B
Retailer 10
-
£517 GBP
$694 USD
View
B
Retailer 11
-
£538 GBP
$722 USD
View
Most Expensive
B
MOH London
LG851617161 · Oct 29
£727 GBP
View
11 more retailers have this diamond
Prices start from £181 GBPSave up to £546 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
1.23ct Round
£181 GBP