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Marquise|Lab Grown|IGI

1.71ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG747508367

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG747508367

Diamond specifications and retailer prices

From £537 GBP
$720 USD
As of October 30, 2026
Save £4,232 GBP (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,769 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 1.71ct lab-grown marquise diamond

This 1.71ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG747508367 or 747508367. Listed at 15 retailers as of October 30, 2026, with prices from £537 to £4,769, a £4,232 spread on the same certified stone. Do Amore Diamonds lists it at £4,769. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747508367
Dimensions12.32 × 6.22 × 3.88 mm
L/W Ratio1.98
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
12.32 mm6.22 mm1.71 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747508367
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.4%

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: £4,769 GBP|Low: £537 GBP|High: £6,351 GBP|Avg: £1,733 GBP|-24.9%
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
October 29, 2026
Retailer 8£537 GBP
Retailer 15£584 GBP
Retailer 11£740 GBP
Retailer 4£776 GBP
Retailer 7£802 GBP
Retailer 5£836 GBP
Retailer 10£1,011 GBP
Retailer 2£1,159 GBP
Retailer 13£1,319 GBP
Retailer 12£1,535 GBP
Retailer 3£1,827 GBP
Retailer 14£1,934 GBP
Retailer 9£2,582 GBP
Retailer 6£2,888 GBP
Do Amore Diamonds£4,769 GBP

31 data points across 15 retailers

15 retailers£537 GBP to £4,769 GBP

A
Cheapest Retailer
-
£537 GBP
$720 USD
A
Retailer 2
-
£584 GBP
$783 USD
View
A
Retailer 3
-
£740 GBP
$992 USD
View
A
Retailer 4
-
£776 GBP
$1,040 USD
View
A
Retailer 5
-
£802 GBP
$1,074 USD
View
Final sale: no returns
A
Retailer 6
-
£836 GBP
$1,120 USD
View
A
Retailer 7
-
£1,011 GBP
$1,355 USD
View
A
Retailer 8
-
£1,159 GBP
€1,479 EUR
View
A
Retailer 9
-
£1,319 GBP
A$2,718 AUD
View
B+
Retailer 10
-
£1,535 GBP
$2,057 USD
View
B+
Retailer 11
-
£1,827 GBP
$2,448 USD
View
B+
Retailer 12
-
£1,934 GBP
$2,591 USD
View
B+
Retailer 13
-
£2,582 GBP
View
B
Retailer 14
-
£2,888 GBP
$3,870 USD
View
Most Expensive
B
Do Amore Diamonds
27-5D6F0F74C · Oct 30
£4,769 GBP
$6,390 USD
View
14 more retailers have this diamond
Prices start from £537 GBPSave up to £4,232 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
1.71ct Marquise
£537 GBP