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Round|Lab Grown|IGI

1.20ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG848699978

Shape and cutting style on the report: Round brilliant

Certificate IGI LG848699978

Diamond specifications and retailer prices

From £118 GBP
$158 USD
As of November 1, 2026
Save £567 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £684 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG848699978 or 848699978. Listed at 20 retailers as of November 1, 2026, with prices from £118 to £684, a £567 spread on the same certified stone. MOH London lists it at £684. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848699978
Dimensions6.83 × 6.86 × 4.19 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 mm6.86 mm1.20 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848699978
Side View
Table 60.0%Crown 33.7°Girdle: THN-MEDPavilion 41.5°Culet: NoneDepth 61.2%

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: £684 GBP|Low: £118 GBP|High: £688 GBP|Avg: £316 GBP|-0.6%
MOH London
Retailer 2
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November 2, 2026
Retailer 3£118 GBP
Retailer 20£137 GBP
Retailer 5£147 GBP
Retailer 19£147 GBP
Retailer 12£172 GBP
Retailer 4£197 GBP
Retailer 17£251 GBP
Retailer 2£253 GBP
Retailer 15£253 GBP
Retailer 13£257 GBP
Retailer 8£283 GBP
Retailer 6£333 GBP
Retailer 14£357 GBP
Retailer 16£358 GBP
Retailer 18£387 GBP
Retailer 9£471 GBP
Retailer 7£484 GBP
Retailer 11£490 GBP
Retailer 10£512 GBP
MOH London£684 GBP

10 data points across 20 retailers

20 retailers£118 GBP to £684 GBP

A
Cheapest Retailer
-
£118 GBP
$158 USD
A
Retailer 2
-
£137 GBP
$184 USD
View
A
Retailer 3
-
£147 GBP
$197 USD
View
Retailer 4
-
£147 GBP
$197 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£172 GBP
HK$1,800 HKD
View
B+
Retailer 6
-
£197 GBP
$265 USD
View
A
Retailer 7
-
£251 GBP
€321 EUR
View
A
Retailer 8
-
£253 GBP
View
A
Retailer 9
-
£253 GBP
ZAR 5,480 ZAR
View
A
Retailer 10
-
£257 GBP
View
A
Retailer 11
-
£283 GBP
$380 USD
View
B+
Retailer 12
-
£333 GBP
$447 USD
View
B+
Retailer 13
-
£357 GBP
A$737 AUD
View
B+
Retailer 14
-
£358 GBP
$480 USD
View
B+
Retailer 15
-
£387 GBP
$520 USD
View
B
Retailer 16
-
£471 GBP
$632 USD
View
B
Retailer 17
-
£484 GBP
$650 USD
View
B
Retailer 18
-
£490 GBP
SGD 888 SGD
View
B
Retailer 19
-
£512 GBP
$687 USD
View
Most Expensive
B
MOH London
LG848699978 · Nov 1
£684 GBP
View
19 more retailers have this diamond
Prices start from £118 GBPSave up to £567 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
1.20ct Round
£118 GBP