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Round|Lab Grown|IGI

3.68ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG621408866

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621408866

Diamond specifications and retailer prices

From £346 GBP
$463 USD
As of October 31, 2026
Save £1,105 GBP (76%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,450 GBP at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.68ct lab-grown round diamond

This 3.68ct 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 LG621408866 or 621408866. Listed at 4 retailers as of October 31, 2026, with prices from £346 to £1,450, a £1,105 spread on the same certified stone. The Diamond Guys lists it at £1,450. 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

3.68
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621408866
Dimensions9.95 × 9.90 × 6.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
9.95 mm9.90 mm3.68 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621408866
Side View
Table 58.0%Crown 34.3°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £346 GBP|Low: £346 GBP|High: £2,605 GBP|Avg: £1,004 GBP|-5.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
The Diamond Guys
October 27, 2026
Retailer 1£346 GBP
Retailer 9£474 GBP
Retailer 6£492 GBP
Retailer 5£553 GBP
Retailer 3£605 GBP
Retailer 11£649 GBP
Retailer 12£731 GBP
Retailer 7£937 GBP
Retailer 13£1,003 GBP
Retailer 4£1,096 GBP
Retailer 10£1,402 GBP
The Diamond Guys£1,450 GBP
Retailer 2£1,704 GBP
Retailer 8£2,605 GBP

6 data points across 14 retailers

4 retailers£346 GBP to £1,450 GBP

A
Cheapest Retailer
-
£346 GBP
$463 USD
Final sale: no returns
B+
Retailer 2
-
£492 GBP
$659 USD
View
B+
Retailer 3
-
£1,096 GBP
CA$2,040 CAD
View
Most Expensive
B
The Diamond Guys
1954433978 · Nov 1
£1,450 GBP
$1,943 USD
View
3 more retailers have this diamond
Prices start from £346 GBPSave up to £1,105 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
3.68ct Round
£346 GBP