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Radiant|Lab Grown|IGI

1.00ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG512227222

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

Certificate IGI LG512227222

Diamond specifications and retailer prices

From £538 GBP
$722 USD
As of November 2, 2026
Save £609 GBP (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,942 GBP at Flawless Fine Jewelry · As of November 2, 2026
View at Flawless Fine Jewelry

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG512227222 or 512227222. Listed at 12 retailers as of November 2, 2026, with a 113% 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

1.00
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.7°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512227222
Dimensions6.55 × 4.96 × 3.48 mm
L/W Ratio1.32
Culet sizeLong
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
6.55 mm4.96 mm1.00 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512227222
Side View
Table 66.0%Crown 39.7°Girdle: THK-VTKPavilion 31.9°Culet: LNGDepth 70.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £1,942 GBP|Low: £516 GBP|High: £2,484 GBP|Avg: £1,097 GBP
Flawless Fine Jewelry
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 2, 2026
Retailer 9£538 GBP
Retailer 10£566 GBP
Retailer 14£586 GBP
Retailer 3£624 GBP
Retailer 11£624 GBP
Retailer 6£756 GBP
Retailer 4£756 GBP
Retailer 5£981 GBP
Retailer 13£1,013 GBP
Retailer 2£1,147 GBP
Retailer 8£1,538 GBP
Retailer 12£1,756 GBP
Flawless Fine Jewelry£1,942 GBP
Retailer 7£2,452 GBP

23 data points across 14 retailers

12 retailers£538 GBP to £1,147 GBP

B+
Cheapest Retailer
-
£538 GBP
$722 USD
B
Retailer 2
-
£566 GBP
$760 USD
View
B
Retailer 3
-
£586 GBP
$786 USD
View
Retailer 4
-
£624 GBP
$838 USD
View
Price last confirmed 16 days ago
B
Retailer 5
-
£624 GBP
$838 USD
View
B
Retailer 6
-
£756 GBP
$1,015 USD
View
B
Retailer 7
-
£1,013 GBP
$1,359 USD
View
B
Retailer 8
-
£1,147 GBP
ZAR 24,870 ZAR
View
Retailer 9
-
£1,538 GBP
$2,064 USD
View
Price under review
Retailer 10
-
£1,756 GBP
$2,356 USD
View
Price under review
Most Expensive
Flawless Fine Jewelry
77780620A · Nov 2
£1,942 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £538 GBPSave up to £609 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+
1.00ct Radiant
£538 GBP