CaratHunter
Plans
Marquise|Lab Grown|IGI

2.05ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG818690291

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818690291

Diamond specifications and retailer prices

From $406 AUD
As of November 4, 2026
Save $1,866 AUD (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,271 AUD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 2.05ct lab-grown marquise diamond

This 2.05ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818690291 or 818690291. Listed at 4 retailers as of November 1, 2026, with prices from $406 to $2,271, a $1,866 spread on the same certified stone. Brilliant Earth lists it at $2,271. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.05
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818690291
Dimensions12.53 × 6.68 × 4.29 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.53 mm6.68 mm2.05 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818690291
Side View
Table 60.0%Crown 36.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.2%

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: Nov 4
Current: $2,271 AUD|Low: $406 AUD|High: $3,843 AUD|Avg: $1,254 AUD|-40.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 3$406 AUD
Retailer 5$707 AUD
Retailer 7$757 AUD
Retailer 2$879 AUD
Retailer 6$923 AUD
Retailer 4$1,793 AUD
Brilliant Earth$2,271 AUD

38 data points across 7 retailers

4 retailers$406 AUD to $2,271 AUD

A
Cheapest Retailer
-
$406 AUD
Final sale: no returns
A
Retailer 2
-
$879 AUD
View
B
Retailer 3
-
$1,793 AUD
View
Most Expensive
B
Brilliant Earth
21228960A · Nov 1
$2,271 AUD
$1,590 USD
View
3 more retailers have this diamond
Prices start from $406 AUDSave up to $1,866 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
2.05ct Marquise
$406 AUD