CaratHunter
Plans
Marquise|Lab Grown|IGI

2.91ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG629454432

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG629454432

Diamond specifications and retailer prices

From £2,611 GBP
$3,498 USD
As of October 31, 2026
Save £10,477 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £19,755 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 2.91ct lab-grown marquise diamond

This 2.91ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG629454432 or 629454432. Listed at 17 retailers as of October 31, 2026, with a 401% 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

2.91
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629454432
Dimensions15.08 × 7.39 × 4.70 mm
L/W Ratio2.04
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
15.08 mm7.39 mm2.91 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629454432
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.6%

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: £19,755 GBP|Low: £2,447 GBP|High: £19,755 GBP|Avg: £6,803 GBP
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 12£2,447 GBP
Retailer 5£2,611 GBP
Retailer 20£3,140 GBP
Retailer 6£3,215 GBP
Retailer 4£3,373 GBP
Retailer 9£4,208 GBP
Retailer 10£4,404 GBP
Retailer 15£4,417 GBP
Retailer 14£4,759 GBP
Retailer 3£4,844 GBP
Retailer 8£5,164 GBP
Retailer 16£5,351 GBP
Retailer 2£7,611 GBP
Retailer 18£8,345 GBP
Retailer 13£8,885 GBP
Retailer 17£9,483 GBP
Retailer 7£9,615 GBP
Retailer 19£12,753 GBP
Retailer 11£13,088 GBP
Do Amore Diamonds£19,755 GBP

15 data points across 20 retailers

17 retailers£2,611 GBP to £13,088 GBP

A
Cheapest Retailer
-
£2,611 GBP
$3,498 USD
A
Retailer 2
-
£3,140 GBP
$4,207 USD
View
A
Retailer 3
-
£3,215 GBP
$4,308 USD
View
Final sale: no returns
A
Retailer 4
-
£3,373 GBP
$4,520 USD
View
B+
Retailer 5
-
£4,417 GBP
$5,918 USD
View
B+
Retailer 6
-
£4,759 GBP
View
B+
Retailer 7
-
£4,844 GBP
$6,490 USD
View
B+
Retailer 8
-
£5,164 GBP
View
B+
Retailer 9
-
£5,351 GBP
$7,170 USD
View
B
Retailer 10
-
£7,611 GBP
View
B
Retailer 11
-
£8,345 GBP
$11,182 USD
View
B
Retailer 12
-
£8,885 GBP
A$18,315 AUD
View
B
Retailer 13
-
£9,483 GBP
ZAR 205,266 ZAR
View
B
Retailer 14
-
£9,615 GBP
$12,883 USD
View
B
Retailer 15
-
£12,753 GBP
SGD 23,092 SGD
View
B
Retailer 16
-
£13,088 GBP
$17,536 USD
View
Most Expensive
Do Amore Diamonds
27-0B7BA0380 · Oct 31
£19,755 GBP
$26,470 USD
View
Price under review
16 more retailers have this diamond
Prices start from £2,611 GBPSave up to £10,477 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
2.91ct Marquise
£2,611 GBP