CaratHunter
Plans
Round|Lab Grown|IGI

1.20ct I VS2 Round Lab Grown Diamond

ID • I/VS2 • IGI LG492123251

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123251

Diamond specifications and retailer prices

From £515 GBP
As of November 2, 2026
Save £891 GBP (63%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,395 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG492123251 or 492123251. Listed at 12 retailers as of November 2, 2026, with a 173% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
I
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123251
Dimensions6.91 × 6.89 × 4.17 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.91 mm6.89 mm1.20 ctI / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123251
Side View
Table 59.0%Crown 32.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £3,649 GBP|Low: £515 GBP|High: £3,698 GBP|Avg: £1,861 GBP
Retailer 1
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
November 1, 2026
Retailer 7£515 GBP
Retailer 9£1,101 GBP
Retailer 13£1,233 GBP
Retailer 10£1,277 GBP
Retailer 12£1,277 GBP
Retailer 14£1,406 GBP
Retailer 4£1,411 GBP
Retailer 2£1,722 GBP
Retailer 11£2,015 GBP
Retailer 8£2,151 GBP
Retailer 3£2,319 GBP
Retailer 5£2,590 GBP
Retailer 6£2,859 GBP
Retailer 1£3,649 GBP

20 data points across 14 retailers

12 retailers£515 GBP to £1,406 GBP

B+
Cheapest Retailer
-
£515 GBP
B
Retailer 2
-
£1,101 GBP
View
B
Retailer 3
-
£1,198 GBP
View
B
Retailer 4
-
£1,233 GBP
View
Final sale: no returns
B
Retailer 5
-
£1,277 GBP
View
Retailer 6
-
£1,277 GBP
View
Price last confirmed 23 days ago
B
Retailer 7
-
£1,406 GBP
View
Retailer 8
-
£2,015 GBP
View
Price under review
Retailer 9
-
£2,151 GBP
View
Price under review
Retailer 10
-
£2,319 GBP
View
Price under review
Most Expensive
NZ Jewellers
83d27848-2b21-41ff-bcf2-1981091fa5b8 · Nov 3
£2,395 GBP
$3,212 USD
View
Price under review
10 more retailers have this diamond
Prices start from £515 GBPSave up to £891 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.

B+
1.20ct Round
£515 GBP