CaratHunter
Plans
Marquise|Lab Grown|IGI

1.05ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG846656583

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG846656583

Diamond specifications and retailer prices

From $291 AUD
As of November 4, 2026
Save $594 AUD (67%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $886 AUD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG846656583 or 846656583. Listed at 8 retailers as of November 3, 2026, with prices from $291 to $886, a $594 spread on the same certified stone. Brilliant Earth lists it at $886. 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

1.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846656583
Dimensions10.56 × 5.19 × 3.30 mm
L/W Ratio2.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.56 mm5.19 mm1.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846656583
Side View
Table 65.0%Crown 37.6°Girdle: MED-STKPavilion 41.2°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: Nov 4
Current: $624 AUD|Low: $221 AUD|High: $736 AUD|Avg: $450 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$221 AUD
Retailer 3$291 AUD
Retailer 6$320 AUD
Retailer 7$417 AUD
Retailer 8$460 AUD
Retailer 1$624 AUD
Retailer 5$684 AUD
Retailer 2$736 AUD

4 data points across 8 retailers

8 retailers$291 AUD to $886 AUD

A
Cheapest Retailer
-
$291 AUD
Retailer 2
-
$320 AUD
View
Price last confirmed 10 days ago
Retailer 3
-
$417 AUD
View
Price last confirmed 10 days ago
Retailer 4
-
$460 AUD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
$624 AUD
View
B
Retailer 6
-
$684 AUD
View
Retailer 7
-
$736 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
22251229A · Nov 3
$886 AUD
$620 USD
View
7 more retailers have this diamond
Prices start from $291 AUDSave up to $594 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
1.05ct Marquise
$291 AUD