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Marquise|Lab Grown|IGI

3.05ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG749505354

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG749505354

Diamond specifications and retailer prices

From £1,450 GBP
$1,943 USD
As of October 30, 2026
Save £4,439 GBP (75%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £5,889 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.05ct lab-grown marquise diamond

This 3.05ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG749505354 or 749505354. Listed at 24 retailers as of October 30, 2026, with prices from £1,450 to £5,889, a £4,439 spread on the same certified stone. Taylor and Hart lists it at £5,889. 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
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749505354
Dimensions14.18 × 7.52 × 4.92 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.18 mm7.52 mm3.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749505354
Side View
Table 61.0%Crown 37.4°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
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 30
Current: £2,313 GBP|Low: £1,624 GBP|High: £5,895 GBP|Avg: £3,537 GBP|-4.8%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Taylor and Hart
October 30, 2026
Retailer 16£1,771 GBP
Retailer 4£1,785 GBP
Retailer 18£1,806 GBP
Retailer 11£1,939 GBP
Retailer 1£2,313 GBP
Retailer 15£2,405 GBP
Retailer 5£2,459 GBP
Retailer 2£2,521 GBP
Retailer 14£2,655 GBP
Retailer 9£3,196 GBP
Retailer 17£3,805 GBP
Retailer 12£3,906 GBP
Retailer 3£4,167 GBP
Retailer 19£4,342 GBP
Retailer 10£4,765 GBP
Retailer 13£4,829 GBP
Retailer 7£5,042 GBP
Retailer 8£5,617 GBP
Retailer 6£5,687 GBP
Taylor and Hart£5,889 GBP

37 data points across 20 retailers

24 retailers£1,450 GBP to £5,889 GBP

A
Cheapest Retailer
-
£1,450 GBP
$1,943 USD
A
Retailer 2
-
£1,682 GBP
$2,254 USD
View
A
Retailer 3
-
£1,771 GBP
$2,373 USD
View
Final sale: no returns
A
Retailer 4
-
£1,785 GBP
$2,392 USD
View
A
Retailer 5
-
£1,806 GBP
$2,420 USD
View
A
Retailer 6
-
£1,939 GBP
HK$20,300 HKD
View
A
Retailer 7
-
£2,312 GBP
$3,098 USD
View
A
Retailer 8
-
£2,313 GBP
View
A
Retailer 9
-
£2,405 GBP
$3,222 USD
View
A
Retailer 10
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£2,459 GBP
$3,295 USD
View
A
Retailer 11
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£2,521 GBP
$3,378 USD
View
A
Retailer 12
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£2,655 GBP
€3,388 EUR
View
A
Retailer 13
-
£3,196 GBP
View
Retailer 14
-
£3,805 GBP
A$7,843 AUD
View
Price last confirmed 8 days ago
A
Retailer 15
-
£3,906 GBP
ZAR 84,550 ZAR
View
A
Retailer 16
-
£4,167 GBP
$5,583 USD
View
A
Retailer 17
-
£4,342 GBP
$5,818 USD
View
B+
Retailer 18
-
£4,536 GBP
$6,078 USD
View
Retailer 19
-
£4,765 GBP
$6,385 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£4,829 GBP
View
B+
Retailer 21
-
£5,042 GBP
$6,756 USD
View
B+
Retailer 22
-
£5,617 GBP
SGD 10,170 SGD
View
B+
Retailer 23
-
£5,687 GBP
$7,620 USD
View
Most Expensive
B+
Taylor and Hart
8NDQP6W · Oct 30
£5,889 GBP
$7,891 USD
View
23 more retailers have this diamond
Prices start from £1,450 GBPSave up to £4,439 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
£1,450 GBP