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Marquise|Lab Grown|IGI

3.21ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG794697191

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG794697191

Diamond specifications and retailer prices

From £2,711 GBP
$3,633 USD
As of October 31, 2026
Save £10,560 GBP (80%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £20,017 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.21ct lab-grown marquise diamond

This 3.21ct 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 LG794697191 or 794697191. Listed at 24 retailers as of October 31, 2026, with a 389% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.21
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794697191
Dimensions14.96 × 7.77 × 4.88 mm
L/W Ratio1.93
Girdle conditionFaceted
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
14.96 mm7.77 mm3.21 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794697191
Side View
Table 56.0%Crown 35.1°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.8%

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: £20,017 GBP|Low: £2,711 GBP|High: £23,636 GBP|Avg: £7,823 GBP|-15.3%
Do Amore Diamonds
Retailer 2
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Retailer 21
October 31, 2026
Retailer 20£2,711 GBP
Retailer 12£2,909 GBP
Retailer 17£3,049 GBP
Retailer 9£3,258 GBP
Retailer 5£3,375 GBP
Retailer 19£3,418 GBP
Retailer 3£4,426 GBP
Retailer 18£4,476 GBP
Retailer 14£4,655 GBP
Retailer 21£4,824 GBP
Retailer 2£4,825 GBP
Retailer 11£5,243 GBP
Retailer 15£5,780 GBP
Retailer 16£7,754 GBP
Retailer 7£8,292 GBP
Retailer 13£8,648 GBP
Retailer 4£9,743 GBP
Retailer 6£11,767 GBP
Retailer 10£13,262 GBP
Retailer 8£13,271 GBP
Do Amore Diamonds£20,017 GBP

40 data points across 21 retailers

24 retailers£2,711 GBP to £13,271 GBP

A
Cheapest Retailer
-
£2,711 GBP
$3,633 USD
A
Retailer 2
-
£2,909 GBP
$3,898 USD
View
A
Retailer 3
-
£3,049 GBP
$4,085 USD
View
A
Retailer 4
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£3,258 GBP
$4,365 USD
View
Final sale: no returns
A
Retailer 5
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£3,375 GBP
$4,522 USD
View
A
Retailer 6
-
£3,418 GBP
$4,580 USD
View
Retailer 7
-
£3,985 GBP
$5,339 USD
View
Price last confirmed 19 days ago
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Retailer 8
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£4,426 GBP
$5,930 USD
View
A
Retailer 9
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£4,476 GBP
$5,997 USD
View
A
Retailer 10
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£4,655 GBP
$6,237 USD
View
A
Retailer 11
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£4,824 GBP
$6,463 USD
View
A
Retailer 12
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£4,825 GBP
View
B+
Retailer 13
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£5,243 GBP
View
B+
Retailer 14
-
£5,780 GBP
€7,376 EUR
View
B+
Retailer 15
-
£7,754 GBP
View
B+
Retailer 16
-
£8,292 GBP
$11,110 USD
View
B+
Retailer 17
-
£8,648 GBP
ZAR 187,197 ZAR
View
B
Retailer 18
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£9,357 GBP
$12,537 USD
View
B+
Retailer 19
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£9,743 GBP
$13,054 USD
View
B
Retailer 20
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£10,185 GBP
$13,647 USD
View
B
Retailer 21
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£11,767 GBP
$15,767 USD
View
B
Retailer 22
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£13,262 GBP
$17,770 USD
View
B
Retailer 23
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£13,271 GBP
$17,782 USD
View
Most Expensive
Do Amore Diamonds
27-B90E2475F · Oct 31
£20,017 GBP
$26,820 USD
View
Price under review
23 more retailers have this diamond
Prices start from £2,711 GBPSave up to £10,560 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
3.21ct Marquise
£2,711 GBP