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Radiant|Lab Grown|IGI

1.53ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG659430398

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

Certificate IGI LG659430398

Diamond specifications and retailer prices

From £436 GBP
As of November 5, 2026
Save £167 GBP (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £641 GBP at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 1.53ct lab-grown radiant diamond

This 1.53ct lab-grown radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG659430398 or 659430398. Listed at 3 retailers as of November 4, 2026, with a 38% 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

1.53
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659430398
Dimensions8.29 × 5.71 × 3.75 mm
L/W Ratio1.45
Culet sizePointed
Top View
8.29 mm5.71 mm1.53 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659430398
Side View
Table 68.0%Crown 46.7°Girdle: MediumPavilion 35°Culet: NoneDepth 65.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £604 GBP|Low: £236 GBP|High: £779 GBP|Avg: £410 GBP|-8.9%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 6£236 GBP
Retailer 8£240 GBP
Retailer 5£252 GBP
Retailer 2£273 GBP
Retailer 7£345 GBP
Retailer 10£387 GBP
Retailer 9£403 GBP
Retailer 12£410 GBP
Retailer 11£430 GBP
Retailer 4£519 GBP
Rare Carat£604 GBP
Retailer 3£779 GBP

4 data points across 12 retailers

3 retailers£436 GBP to £604 GBP

A
Cheapest Retailer
-
£436 GBP
B+
Retailer 2
-
£604 GBP
View
Most Expensive
Rare Carat
LLP9-71C · Oct 19
£641 GBP
$865 USD
View
Price last confirmed 17 days ago
2 more retailers have this diamond
Prices start from £436 GBPSave up to £167 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
1.53ct Radiant
£436 GBP