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Marquise|Lab Grown|IGI

3.20ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG802606950

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG802606950

Diamond specifications and retailer prices

From £1,859 GBP
$2,491 USD
As of October 30, 2026
Save £5,667 GBP (75%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £7,526 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.2ct lab-grown marquise diamond

This 3.2ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG802606950 or 802606950. Listed at 21 retailers as of October 30, 2026, with prices from £1,859 to £7,526, a £5,667 spread on the same certified stone. Taylor and Hart lists it at £7,526. 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

3.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG802606950
Dimensions15.69 × 7.51 × 4.69 mm
L/W Ratio2.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.69 mm7.51 mm3.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG802606950
Side View
Table 60.0%Crown 37.1°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 62.5%

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 30
Current: £5,774 GBP|Low: £1,859 GBP|High: £9,202 GBP|Avg: £4,070 GBP|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 10
Retailer 11
Retailer 12
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Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Taylor and Hart
November 1, 2026
Retailer 7£1,859 GBP
Retailer 3£2,023 GBP
Retailer 2£2,082 GBP
Retailer 18£2,157 GBP
Retailer 13£2,276 GBP
Retailer 19£2,276 GBP
Retailer 11£2,493 GBP
Retailer 14£2,566 GBP
Retailer 10£2,703 GBP
Retailer 15£2,888 GBP
Retailer 9£2,947 GBP
Retailer 20£2,964 GBP
Retailer 8£3,361 GBP
Retailer 6£3,575 GBP
Retailer 4£4,095 GBP
Retailer 12£4,870 GBP
Retailer 17£5,008 GBP
Retailer 5£5,759 GBP
Retailer 1£5,774 GBP
Retailer 16£6,896 GBP
Taylor and Hart£7,526 GBP

36 data points across 21 retailers

21 retailers£1,859 GBP to £7,526 GBP

A
Cheapest Retailer
-
£1,859 GBP
$2,491 USD
A
Retailer 2
-
£2,023 GBP
$2,710 USD
View
A
Retailer 3
-
£2,082 GBP
$2,789 USD
View
Final sale: no returns
A
Retailer 4
-
£2,157 GBP
$2,890 USD
View
A
Retailer 5
-
£2,276 GBP
$3,050 USD
View
A
Retailer 6
-
£2,276 GBP
$3,050 USD
View
A
Retailer 7
-
£2,493 GBP
HK$26,100 HKD
View
A
Retailer 8
-
£2,566 GBP
View
A
Retailer 9
-
£2,703 GBP
$3,622 USD
View
A
Retailer 10
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£2,888 GBP
View
A
Retailer 11
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£2,947 GBP
$3,949 USD
View
A
Retailer 12
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£2,964 GBP
$3,972 USD
View
A
Retailer 13
-
£3,361 GBP
$4,504 USD
View
A
Retailer 14
-
£3,575 GBP
€4,562 EUR
View
A
Retailer 15
-
£4,095 GBP
View
B+
Retailer 16
-
£4,870 GBP
A$10,038 AUD
View
B+
Retailer 17
-
£5,008 GBP
ZAR 108,405 ZAR
View
B+
Retailer 18
-
£5,759 GBP
$7,716 USD
View
B+
Retailer 19
-
£5,774 GBP
View
B+
Retailer 20
-
£6,896 GBP
$9,240 USD
View
Most Expensive
B+
Taylor and Hart
YJ2EXM4 · Oct 31
£7,526 GBP
$10,084 USD
View
20 more retailers have this diamond
Prices start from £1,859 GBPSave up to £5,667 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
3.20ct Marquise
£1,859 GBP