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Marquise|Lab Grown|IGI

3.05ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG847659349

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847659349

Diamond specifications and retailer prices

From £343 GBP
As of November 4, 2026
Save £2,392 GBP (87%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,735 GBP at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 3.05ct lab-grown marquise diamond

This 3.05ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG847659349 or 847659349. Listed at 18 retailers as of November 4, 2026, with prices from £343 to £2,735, a £2,392 spread on the same certified stone. Helzberg Diamonds lists it at £2,735. 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

3.05
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847659349
Dimensions14.72 × 7.61 × 4.81 mm
L/W Ratio1.93
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.72 mm7.61 mm3.05 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847659349
Side View
Table 62.0%Crown 34.5°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,735 GBP|Low: £343 GBP|High: £2,735 GBP|Avg: £1,090 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 18
November 5, 2026
Retailer 3£343 GBP
Retailer 14£384 GBP
Retailer 4£411 GBP
Retailer 12£484 GBP
Retailer 16£513 GBP
Retailer 6£587 GBP
Retailer 5£646 GBP
Retailer 8£666 GBP
Retailer 11£898 GBP
Retailer 7£912 GBP
Retailer 17£999 GBP
Retailer 15£1,366 GBP
Retailer 10£1,521 GBP
Retailer 2£1,557 GBP
Retailer 18£1,594 GBP
Retailer 9£1,904 GBP
Retailer 13£2,511 GBP
Helzberg Diamonds£2,735 GBP

12 data points across 18 retailers

18 retailers£343 GBP to £2,735 GBP

A
Cheapest Retailer
-
£343 GBP
A
Retailer 2
-
£384 GBP
View
A
Retailer 3
-
£411 GBP
View
Final sale: no returns
A
Retailer 4
-
£484 GBP
View
A
Retailer 5
-
£513 GBP
View
B+
Retailer 6
-
£587 GBP
View
A
Retailer 7
-
£646 GBP
View
Retailer 8
-
£666 GBP
View
Price last confirmed 11 days ago
A
Retailer 9
-
£898 GBP
View
A
Retailer 10
-
£912 GBP
View
A
Retailer 11
-
£999 GBP
View
B+
Retailer 12
-
£1,366 GBP
View
B+
Retailer 13
-
£1,521 GBP
View
B+
Retailer 14
-
£1,557 GBP
View
B+
Retailer 15
-
£1,594 GBP
View
B
Retailer 16
-
£1,904 GBP
View
B
Retailer 17
-
£2,511 GBP
View
Most Expensive
B
Helzberg Diamonds
ZXZOKNMLPJKP · Nov 4
£2,735 GBP
$3,681 USD
View
17 more retailers have this diamond
Prices start from £343 GBPSave up to £2,392 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
3.05ct Marquise
£343 GBP