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Marquise|Lab Grown|IGI

1.73ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG668472310

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG668472310

Diamond specifications and retailer prices

From £641 GBP
$853 USD
As of October 30, 2026
Save £5,052 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £5,692 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.73ct lab-grown marquise diamond

This 1.73ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG668472310 or 668472310. Listed at 24 retailers as of October 29, 2026, with prices from £641 to £5,692, a £5,052 spread on the same certified stone. Do Amore Diamonds lists it at £5,692. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.73
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668472310
Dimensions12.36 × 6.22 × 3.92 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.36 mm6.22 mm1.73 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668472310
Side View
Table 59.0%Crown 35.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 63.0%

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: £5,692 GBP|Low: £615 GBP|High: £5,692 GBP|Avg: £1,904 GBP
Do Amore Diamonds
Retailer 2
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Retailer 12
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Retailer 18
October 30, 2026
Retailer 6£641 GBP
Retailer 5£697 GBP
Retailer 4£743 GBP
Retailer 18£743 GBP
Retailer 14£856 GBP
Retailer 2£906 GBP
Retailer 11£1,264 GBP
Retailer 13£1,508 GBP
Retailer 17£1,626 GBP
Retailer 3£1,709 GBP
Retailer 15£2,041 GBP
Retailer 7£2,307 GBP
Retailer 10£2,325 GBP
Retailer 8£2,346 GBP
Retailer 9£2,440 GBP
Retailer 16£2,673 GBP
Retailer 12£2,797 GBP
Do Amore Diamonds£5,692 GBP

31 data points across 18 retailers

24 retailers£641 GBP to £5,692 GBP

A
Cheapest Retailer
-
£641 GBP
$853 USD
A
Retailer 2
-
£697 GBP
$928 USD
View
A
Retailer 3
-
£743 GBP
$990 USD
View
Retailer 4
-
£743 GBP
$990 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£773 GBP
$1,029 USD
View
Final sale: no returns
A
Retailer 6
-
£853 GBP
$1,136 USD
View
A
Retailer 7
-
£855 GBP
$1,139 USD
View
A
Retailer 8
-
£856 GBP
$1,140 USD
View
A
Retailer 9
-
£906 GBP
View
A
Retailer 10
-
£1,049 GBP
$1,397 USD
View
A
Retailer 11
-
£1,264 GBP
View
B+
Retailer 12
-
£1,508 GBP
ZAR 32,446 ZAR
View
B+
Retailer 13
-
£1,626 GBP
$2,165 USD
View
B+
Retailer 14
-
£1,709 GBP
$2,276 USD
View
Retailer 15
-
£2,041 GBP
A$4,182 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£2,266 GBP
View
B+
Retailer 17
-
£2,307 GBP
$3,072 USD
View
B+
Retailer 18
-
£2,325 GBP
$3,096 USD
View
Retailer 19
-
£2,346 GBP
A$4,807 AUD
View
Price last confirmed 21 days ago
B
Retailer 20
-
£2,440 GBP
$3,249 USD
View
B+
Retailer 21
-
£2,673 GBP
$3,560 USD
View
B+
Retailer 22
-
£2,797 GBP
View
B
Retailer 23
-
£2,923 GBP
$3,893 USD
View
Most Expensive
B
Do Amore Diamonds
27-1B04D236C · Oct 29
£5,692 GBP
$7,580 USD
View
23 more retailers have this diamond
Prices start from £641 GBPSave up to £5,052 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
1.73ct Marquise
£641 GBP