CaratHunter
Plans
Marquise|Lab Grown|IGI

3.00ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG780663620

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780663620

Diamond specifications and retailer prices

From £2,474 GBP
$3,315 USD
As of October 31, 2026
Save £12,710 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £15,184 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3ct lab-grown marquise diamond

This 3ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663620 or 780663620. Listed at 13 retailers as of October 29, 2026, with prices from £2,474 to £15,184, a £12,710 spread on the same certified stone. Blue Nile lists it at £15,184. 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

3.00
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663620
Dimensions14.54 × 7.49 × 4.73 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
14.54 mm7.49 mm3.00 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663620
Side View
Table 59.0%Crown 36.7°Girdle: STK-THKPavilion 39.7°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: Oct 31
Current: £15,184 GBP|Low: £2,474 GBP|High: £16,782 GBP|Avg: £7,005 GBP|-9.5%
Blue Nile
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
October 30, 2026
Retailer 10£2,474 GBP
Retailer 6£2,562 GBP
Retailer 12£3,041 GBP
Retailer 2£4,587 GBP
Retailer 11£5,344 GBP
Retailer 14£5,355 GBP
Retailer 8£5,709 GBP
Retailer 9£7,520 GBP
Retailer 3£7,998 GBP
Retailer 5£8,090 GBP
Retailer 7£8,107 GBP
Retailer 13£9,359 GBP
Retailer 4£12,396 GBP
Blue Nile£15,184 GBP

40 data points across 14 retailers

13 retailers£2,474 GBP to £15,184 GBP

A
Cheapest Retailer
-
£2,474 GBP
$3,315 USD
A
Retailer 2
-
£3,041 GBP
$4,074 USD
View
B+
Retailer 3
-
£4,587 GBP
View
B+
Retailer 4
-
£5,344 GBP
$7,160 USD
View
B+
Retailer 5
-
£5,355 GBP
$7,175 USD
View
B+
Retailer 6
-
£5,709 GBP
€7,285 EUR
View
B+
Retailer 7
-
£7,520 GBP
View
B
Retailer 8
-
£7,998 GBP
$10,716 USD
View
B
Retailer 9
-
£8,090 GBP
$10,840 USD
View
B
Retailer 10
-
£8,107 GBP
ZAR 175,491 ZAR
View
B
Retailer 11
-
£9,359 GBP
$12,540 USD
View
B
Retailer 12
-
£12,396 GBP
$16,610 USD
View
Most Expensive
B
Blue Nile
29977966 · Oct 29
£15,184 GBP
$20,345 USD
View
12 more retailers have this diamond
Prices start from £2,474 GBPSave up to £12,710 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
3.00ct Marquise
£2,474 GBP