CaratHunter
Plans
Marquise|Lab Grown|IGI

1.73ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG801691886

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG801691886

Diamond specifications and retailer prices

From $1,308 AUD
$919 USD
As of October 30, 2026
Save $4,315 AUD (77%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,623 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801691886 or 801691886. Listed at 6 retailers as of October 30, 2026, with prices from $1,308 to $5,623, a $4,315 spread on the same certified stone. Brilliant Earth lists it at $5,623. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801691886
Dimensions12.35 × 6.47 × 3.82 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.35 mm6.47 mm1.73 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801691886
Side View
Table 58.0%Crown 34.7°Girdle: THN-STKPavilion 38.9°Culet: NoneDepth 59.0%

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: $5,623 AUD|Low: $1,179 AUD|High: $7,388 AUD|Avg: $2,948 AUD|-23.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4$1,308 AUD
Retailer 3$1,525 AUD
Retailer 2$2,258 AUD
Retailer 5$2,952 AUD
Retailer 6$4,003 AUD
Brilliant Earth$5,623 AUD

29 data points across 6 retailers

6 retailers$1,308 AUD to $5,623 AUD

A
Cheapest Retailer
-
$1,308 AUD
$919 USD
A
Retailer 2
-
$1,525 AUD
$1,071 USD
View
A
Retailer 3
-
$2,258 AUD
$1,586 USD
View
B+
Retailer 4
-
$2,952 AUD
€1,975 EUR
View
B+
Retailer 5
-
$4,003 AUD
£2,214 GBP
View
Most Expensive
B
Brilliant Earth
20556096A · Oct 30
$5,623 AUD
$3,950 USD
View
5 more retailers have this diamond
Prices start from $1,308 AUDSave up to $4,315 AUD

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
$1,308 AUD