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Round|Lab Grown|IGI

4.50ct I VS1 Round Lab Grown Diamond

ID • I/VS1 • IGI LG573389361

Shape and cutting style on the report: Round brilliant

Certificate IGI LG573389361

Diamond specifications and retailer prices

From £974 GBP
$1,305 USD
As of October 30, 2026
2 retailers carry this diamond
Most expensive: £1,943 GBP at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 4.5ct lab-grown round diamond

This 4.5ct lab-grown round sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG573389361 or 573389361. Listed at 2 retailers as of October 30, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.50
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573389361
Dimensions10.66 × 10.60 × 6.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
10.66 mm10.60 mm4.50 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573389361
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £1,943 GBP|Low: £437 GBP|High: £4,859 GBP|Avg: £1,960 GBP
Rare Carat
Retailer 2
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September 23, 2026
Retailer 13£437 GBP
Retailer 5£806 GBP
Retailer 10£881 GBP
Retailer 9£884 GBP
Retailer 2£974 GBP
Retailer 7£1,027 GBP
Retailer 14£1,509 GBP
Rare Carat£1,943 GBP
Retailer 8£1,965 GBP
Retailer 4£2,502 GBP
Retailer 11£2,612 GBP
Retailer 3£3,456 GBP
Retailer 6£3,456 GBP
Retailer 12£4,859 GBP

57 data points across 14 retailers

2 retailers

B+
Cheapest Retailer
-
£974 GBP
$1,305 USD
Most Expensive
Rare Carat
FAGD-48497 · Aug 9
£1,943 GBP
$2,604 USD
View
Price last confirmed 82 days ago
1 more retailer has this diamond
Prices start from £974 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+
4.50ct Round
£974 GBP