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Radiant|Lab Grown|IGI

1.20ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG847687396

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG847687396

Diamond specifications and retailer prices

From £152 GBP
As of November 4, 2026
Save £744 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,552 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.2ct lab-grown radiant diamond

This 1.2ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG847687396 or 847687396. Listed at 19 retailers as of November 4, 2026, with a 490% 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
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847687396
Dimensions7.74 × 5.33 × 3.42 mm
L/W Ratio1.45
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.74 mm5.33 mm1.20 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847687396
Side View
Table 65.0%Crown 38.9°Girdle: MED-STKPavilion 33.4°Culet: NoneDepth 64.2%

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 4
Current: £1,552 GBP|Low: £152 GBP|High: £1,552 GBP|Avg: £486 GBP
Queensmith
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 6£152 GBP
Retailer 7£170 GBP
Retailer 4£188 GBP
Retailer 10£188 GBP
Retailer 13£251 GBP
Retailer 11£253 GBP
Retailer 18£307 GBP
Retailer 15£325 GBP
Retailer 5£342 GBP
Retailer 2£344 GBP
Retailer 12£456 GBP
Retailer 3£461 GBP
Retailer 14£491 GBP
Retailer 19£530 GBP
Retailer 9£645 GBP
Retailer 17£726 GBP
Retailer 16£881 GBP
Retailer 8£896 GBP
Queensmith£1,552 GBP

19 data points across 19 retailers

19 retailers£152 GBP to £896 GBP

A
Cheapest Retailer
-
£152 GBP
A
Retailer 2
-
£170 GBP
View
Final sale: no returns
Retailer 3
-
£188 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£188 GBP
View
A
Retailer 5
-
£251 GBP
View
B+
Retailer 6
-
£253 GBP
View
A
Retailer 7
-
£307 GBP
View
A
Retailer 8
-
£325 GBP
View
A
Retailer 9
-
£342 GBP
View
A
Retailer 10
-
£344 GBP
View
B+
Retailer 11
-
£456 GBP
View
Retailer 12
-
£461 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£491 GBP
View
Retailer 14
-
£530 GBP
View
Price last confirmed 8 days ago
B
Retailer 15
-
£645 GBP
View
B
Retailer 16
-
£726 GBP
View
B
Retailer 17
-
£881 GBP
View
B
Retailer 18
-
£896 GBP
View
Most Expensive
Queensmith
LG847687396 · Oct 27
£1,552 GBP
View
Price last confirmed 8 days ago
18 more retailers have this diamond
Prices start from £152 GBPSave up to £744 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 Radiant
£152 GBP