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Round|Lab Grown|IGI

1.23ct F VS2 Round Lab Grown Diamond

ID • F/VS2 • IGI LG639435252

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639435252

Diamond specifications and retailer prices

From £134 GBP
$180 USD
As of November 1, 2026
Save £647 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £781 GBP at MOH London · As of October 26, 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 LG639435252 or 639435252. Listed at 20 retailers as of October 26, 2026, with prices from £134 to £781, a £647 spread on the same certified stone. MOH London lists it at £781. 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 angle35.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639435252
Dimensions6.84 × 6.81 × 4.25 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
6.84 mm6.81 mm1.23 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639435252
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
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: £781 GBP|Low: £129 GBP|High: £790 GBP|Avg: £328 GBP|-1.0%
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£134 GBP
Retailer 3£151 GBP
Retailer 11£167 GBP
Retailer 10£235 GBP
Retailer 5£281 GBP
Retailer 6£300 GBP
Retailer 4£306 GBP
Retailer 8£381 GBP
Retailer 2£425 GBP
Retailer 7£485 GBP
MOH London£781 GBP

40 data points across 11 retailers

20 retailers£134 GBP to £781 GBP

A
Cheapest Retailer
-
£134 GBP
$180 USD
A
Retailer 2
-
£151 GBP
$202 USD
View
Final sale: no returns
A
Retailer 3
-
£156 GBP
$209 USD
View
Retailer 4
-
£167 GBP
$224 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£167 GBP
$224 USD
View
B+
Retailer 6
-
£235 GBP
$315 USD
View
A
Retailer 7
-
£281 GBP
€359 EUR
View
A
Retailer 8
-
£300 GBP
View
B+
Retailer 9
-
£301 GBP
$403 USD
View
A
Retailer 10
-
£306 GBP
View
Retailer 11
-
£331 GBP
A$682 AUD
View
Price last confirmed 137 days ago
B+
Retailer 12
-
£381 GBP
$510 USD
View
B+
Retailer 13
-
£408 GBP
$547 USD
View
B+
Retailer 14
-
£425 GBP
$570 USD
View
B+
Retailer 15
-
£485 GBP
$650 USD
View
B
Retailer 16
-
£537 GBP
$719 USD
View
B
Retailer 17
-
£547 GBP
SGD 990 SGD
View
B
Retailer 18
-
£566 GBP
$759 USD
View
B
Retailer 19
-
£577 GBP
$773 USD
View
Most Expensive
B
MOH London
LG639435252 · Oct 26
£781 GBP
View
19 more retailers have this diamond
Prices start from £134 GBPSave up to £647 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
£134 GBP