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Marquise|Lab Grown|IGI

1.00ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG506176879

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG506176879

Diamond specifications and retailer prices

From $815 AUD
$571 USD
As of November 2, 2026
Save $3,574 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,389 AUD at MOH London · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG506176879 or 506176879. Listed at 12 retailers as of November 1, 2026, with prices from $815 to $4,389, a $3,574 spread on the same certified stone. MOH London lists it at $4,389. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG506176879
Dimensions10.31 × 5.30 × 3.06 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.31 mm5.30 mm1.00 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG506176879
Side View
Table 59.0%Crown 38.2°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 57.7%

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 2
Current: $4,389 AUD|Low: $783 AUD|High: $4,442 AUD|Avg: $1,930 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6$815 AUD
Retailer 2$828 AUD
Retailer 9$913 AUD
Retailer 7$1,012 AUD
Retailer 4$1,199 AUD
Retailer 8$1,557 AUD
Retailer 11$1,608 AUD
Retailer 5$2,508 AUD
Retailer 3$2,709 AUD
Retailer 10$3,129 AUD
MOH London$4,389 AUD

20 data points across 11 retailers

12 retailers$815 AUD to $4,389 AUD

A
Cheapest Retailer
-
$815 AUD
$571 USD
A
Retailer 2
-
$828 AUD
$580 USD
View
A
Retailer 3
-
$913 AUD
$640 USD
View
Final sale: no returns
A
Retailer 4
-
$913 AUD
$640 USD
View
Retailer 5
-
$1,012 AUD
$709 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$1,012 AUD
$709 USD
View
B+
Retailer 7
-
$1,199 AUD
$840 USD
View
B+
Retailer 8
-
$1,557 AUD
$1,091 USD
View
B
Retailer 9
-
$2,508 AUD
$1,758 USD
View
B
Retailer 10
-
$2,660 AUD
$1,864 USD
View
B
Retailer 11
-
$3,129 AUD
$2,193 USD
View
Most Expensive
B
MOH London
LG506176879 · Nov 1
$4,389 AUD
£2,422 GBP
View
11 more retailers have this diamond
Prices start from $815 AUDSave up to $3,574 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
$815 AUD