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Marquise|Lab Grown|IGI

3.10ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG768630641

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG768630641

Diamond specifications and retailer prices

From £2,690 GBP
$3,604 USD
As of October 31, 2026
Save £10,797 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £13,487 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

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 LG768630641 or 768630641. Listed at 13 retailers as of October 30, 2026, with prices from £2,690 to £13,487, a £10,797 spread on the same certified stone. Taylor and Hart lists it at £13,487. 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 angle35.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768630641
Dimensions14.94 × 7.68 × 4.81 mm
L/W Ratio1.95
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
14.94 mm7.68 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630641
Side View
Table 59.0%Crown 35.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.6%

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: £6,433 GBP|Low: £2,690 GBP|High: £13,487 GBP|Avg: £7,083 GBP|-36.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 9£2,690 GBP
Retailer 11£3,229 GBP
Retailer 3£4,796 GBP
Retailer 6£4,888 GBP
Retailer 10£5,482 GBP
Retailer 2£5,821 GBP
Retailer 7£6,210 GBP
Retailer 1£6,433 GBP
Retailer 4£6,468 GBP
Retailer 8£7,874 GBP
Retailer 5£8,782 GBP
Retailer 12£10,180 GBP
Taylor and Hart£13,487 GBP

38 data points across 13 retailers

13 retailers£2,690 GBP to £13,487 GBP

A
Cheapest Retailer
-
£2,690 GBP
$3,604 USD
A
Retailer 2
-
£3,229 GBP
$4,327 USD
View
B+
Retailer 3
-
£4,796 GBP
HK$50,200 HKD
View
B+
Retailer 4
-
£4,888 GBP
View
B+
Retailer 5
-
£5,482 GBP
$7,345 USD
View
B+
Retailer 6
-
£5,821 GBP
$7,800 USD
View
B+
Retailer 7
-
£6,210 GBP
€7,924 EUR
View
B+
Retailer 8
-
£6,433 GBP
$8,620 USD
View
B+
Retailer 9
-
£6,468 GBP
$8,666 USD
View
B+
Retailer 10
-
£7,874 GBP
View
B+
Retailer 11
-
£8,782 GBP
ZAR 190,085 ZAR
View
B
Retailer 12
-
£10,180 GBP
$13,640 USD
View
Most Expensive
B
Taylor and Hart
RLZS7Q6 · Oct 30
£13,487 GBP
$18,071 USD
View
12 more retailers have this diamond
Prices start from £2,690 GBPSave up to £10,797 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
£2,690 GBP