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Marquise|Lab Grown|IGI

1.00ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG821694324

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG821694324

Diamond specifications and retailer prices

From $429 AUD
As of November 6, 2026
Save $798 AUD (65%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,227 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG821694324 or 821694324. Listed at 6 retailers as of November 4, 2026, with prices from $429 to $1,227, a $798 spread on the same certified stone. MOH London lists it at $1,227. 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

1.00
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821694324
Dimensions10.30 × 5.30 × 3.29 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.30 mm5.30 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821694324
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,227 AUD|Low: $429 AUD|High: $1,237 AUD|Avg: $675 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 5$429 AUD
Retailer 2$450 AUD
Retailer 4$488 AUD
Retailer 3$499 AUD
Retailer 6$926 AUD
MOH London$1,227 AUD

29 data points across 6 retailers

6 retailers$429 AUD to $1,227 AUD

A
Cheapest Retailer
-
$429 AUD
A
Retailer 2
-
$450 AUD
View
A
Retailer 3
-
$488 AUD
View
A
Retailer 4
-
$499 AUD
View
B
Retailer 5
-
$926 AUD
View
Most Expensive
B
MOH London
LG821694324 · Nov 4
$1,227 AUD
£664 GBP
View
5 more retailers have this diamond
Prices start from $429 AUDSave up to $798 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
1.00ct Marquise
$429 AUD