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Round|Lab Grown|IGI

1.20ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG492112714

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492112714

Diamond specifications and retailer prices

From £514 GBP
$690 USD
As of October 31, 2026
Save £984 GBP (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,521 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG492112714 or 492112714. Listed at 13 retailers as of October 31, 2026, with a 191% 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492112714
Dimensions6.92 × 6.87 × 4.09 mm
L/W Ratio1.01
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
6.92 mm6.87 mm1.20 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492112714
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.4%

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: Oct 31
Current: £2,521 GBP|Low: £514 GBP|High: £3,963 GBP|Avg: £1,970 GBP|+2.4%
Cape Diamonds
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 8£514 GBP
Retailer 10£1,182 GBP
Retailer 14£1,323 GBP
Retailer 11£1,371 GBP
Retailer 13£1,371 GBP
Retailer 5£1,432 GBP
Retailer 3£1,498 GBP
Retailer 4£1,834 GBP
Retailer 12£2,157 GBP
Retailer 7£2,303 GBP
Retailer 9£2,425 GBP
Cape Diamonds£2,521 GBP
Retailer 6£3,069 GBP
Retailer 2£3,916 GBP

26 data points across 14 retailers

13 retailers£514 GBP to £1,498 GBP

B+
Cheapest Retailer
-
£514 GBP
$690 USD
B
Retailer 2
-
£1,182 GBP
$1,586 USD
View
B
Retailer 3
-
£1,286 GBP
$1,726 USD
View
B
Retailer 4
-
£1,323 GBP
$1,776 USD
View
Final sale: no returns
Retailer 5
-
£1,371 GBP
$1,840 USD
View
Price last confirmed 21 days ago
B
Retailer 6
-
£1,371 GBP
$1,840 USD
View
B
Retailer 7
-
£1,498 GBP
$2,010 USD
View
Retailer 8
-
£2,157 GBP
$2,895 USD
View
Price under review
Retailer 9
-
£2,303 GBP
€2,943 EUR
View
Price under review
Retailer 10
-
£2,425 GBP
$3,254 USD
View
Price under review
Most Expensive
Cape Diamonds
cert_492112714 · Oct 29
£2,521 GBP
ZAR 54,643 ZAR
View
Price under review
10 more retailers have this diamond
Prices start from £514 GBPSave up to £984 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
£514 GBP