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3.56ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG645433183

Shape and cutting style on the report: Round brilliant

Certificate IGI LG645433183

Diamond specifications and retailer prices

From £1,061 GBP
CA$1,974 CAD
As of October 30, 2026
Save £342 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,403 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.56ct lab-grown round diamond

This 3.56ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645433183 or 645433183. Listed at 2 retailers as of October 30, 2026, with prices from £1,061 to £1,403, a £342 spread on the same certified stone. The Diamond Guys lists it at £1,403. 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

3.56
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645433183
Dimensions9.88 × 9.83 × 5.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.88 mm9.83 mm3.56 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645433183
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.5%

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: £1,614 GBP|Low: £207 GBP|High: £2,426 GBP|Avg: £1,018 GBP|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4£538 GBP
Retailer 7£649 GBP
Retailer 11£681 GBP
Retailer 2£693 GBP
Retailer 5£746 GBP
Retailer 10£831 GBP
Retailer 6£880 GBP
Retailer 8£1,061 GBP
Retailer 9£1,213 GBP
Retailer 3£1,269 GBP
The Diamond Guys£1,403 GBP
Retailer 1£1,614 GBP
Retailer 12£2,209 GBP

60 data points across 13 retailers

2 retailers£1,061 GBP to £1,403 GBP

B+
Cheapest Retailer
-
£1,061 GBP
CA$1,974 CAD
Most Expensive
B
The Diamond Guys
1954433987 · Oct 30
£1,403 GBP
$1,880 USD
View
1 more retailer has this diamond
Prices start from £1,061 GBPSave up to £342 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+
3.56ct Round
£1,061 GBP