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Round|Lab Grown|IGI

1.45ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG817643581

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817643581

Diamond specifications and retailer prices

From £146 GBP
$196 USD
As of October 30, 2026
Save £154 GBP (51%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £437 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.45ct lab-grown round diamond

This 1.45ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817643581 or 817643581. Listed at 4 retailers as of October 30, 2026, with a 106% 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

1.45
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817643581
Dimensions7.26 × 7.28 × 4.46 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
7.26 mm7.28 mm1.45 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817643581
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 61.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £437 GBP|Low: £146 GBP|High: £574 GBP|Avg: £360 GBP|-1.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3£146 GBP
Retailer 5£275 GBP
Retailer 4£279 GBP
Retailer 2£301 GBP
Rare Carat£437 GBP
Retailer 6£574 GBP

38 data points across 6 retailers

4 retailers£146 GBP to £301 GBP

A
Cheapest Retailer
-
£146 GBP
$196 USD
Final sale: no returns
Retailer 2
-
£279 GBP
ZAR 6,029 ZAR
View
Price last confirmed 44 days ago
A
Retailer 3
-
£301 GBP
View
Most Expensive
Rare Carat
817643581 · Oct 21
£437 GBP
$585 USD
View
Price last confirmed 9 days ago
3 more retailers have this diamond
Prices start from £146 GBPSave up to £154 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
1.45ct Round
£146 GBP