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Marquise|Lab Grown|IGI

3.10ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG784645689

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784645689

Diamond specifications and retailer prices

From £2,639 GBP
$3,536 USD
As of October 30, 2026
Save £15,519 GBP (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £18,158 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 3.1ct lab-grown marquise diamond

This 3.1ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG784645689 or 784645689. Listed at 14 retailers as of October 30, 2026, with prices from £2,639 to £18,158, a £15,519 spread on the same certified stone. Do Amore Diamonds lists it at £18,158. 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

3.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784645689
Dimensions14.43 × 7.52 × 4.89 mm
L/W Ratio1.92
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
14.43 mm7.52 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784645689
Side View
Table 58.0%Crown 35.8°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 65.0%

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: £18,158 GBP|Low: £2,639 GBP|High: £20,905 GBP|Avg: £6,334 GBP|-13.1%
Do Amore Diamonds
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 31, 2026
Retailer 9£2,639 GBP
Retailer 10£2,767 GBP
Retailer 7£2,886 GBP
Retailer 5£2,898 GBP
Retailer 12£3,176 GBP
Retailer 6£3,570 GBP
Retailer 2£4,139 GBP
Retailer 14£4,222 GBP
Retailer 4£4,791 GBP
Retailer 3£5,474 GBP
Retailer 11£5,787 GBP
Retailer 8£6,374 GBP
Retailer 13£7,277 GBP
Do Amore Diamonds£18,158 GBP

31 data points across 14 retailers

14 retailers£2,639 GBP to £18,158 GBP

A
Cheapest Retailer
-
£2,639 GBP
$3,536 USD
A
Retailer 2
-
£2,767 GBP
$3,707 USD
View
A
Retailer 3
-
£2,886 GBP
$3,867 USD
View
A
Retailer 4
-
£2,898 GBP
$3,883 USD
View
A
Retailer 5
-
£3,176 GBP
$4,255 USD
View
A
Retailer 6
-
£3,570 GBP
$4,784 USD
View
Final sale: no returns
A
Retailer 7
-
£4,139 GBP
$5,546 USD
View
A
Retailer 8
-
£4,222 GBP
$5,657 USD
View
B+
Retailer 9
-
£4,791 GBP
$6,419 USD
View
B+
Retailer 10
-
£5,474 GBP
$7,335 USD
View
B+
Retailer 11
-
£5,787 GBP
€7,385 EUR
View
B+
Retailer 12
-
£6,374 GBP
$8,540 USD
View
B+
Retailer 13
-
£7,277 GBP
View
Most Expensive
B
Do Amore Diamonds
27-295A4448B · Oct 30
£18,158 GBP
$24,330 USD
View
13 more retailers have this diamond
Prices start from £2,639 GBPSave up to £15,519 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
3.10ct Marquise
£2,639 GBP