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Marquise|Lab Grown|IGI

1.00ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG436047370

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047370

Diamond specifications and retailer prices

From $857 AUD
As of November 6, 2026
Save $4,729 AUD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,586 AUD at MOH London · As of November 3, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436047370 or 436047370. Listed at 11 retailers as of November 3, 2026, with prices from $857 to $5,586, a $4,729 spread on the same certified stone. MOH London lists it at $5,586. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047370
Dimensions9.63 × 5.35 × 3.21 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.63 mm5.35 mm1.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047370
Side View
Table 54.5%Crown 34.2°Girdle: STK-VTKPavilion 38.5°Culet: NoneDepth 60.0%

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: Nov 6
Current: $5,586 AUD|Low: $857 AUD|High: $5,660 AUD|Avg: $2,706 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 2$857 AUD
Retailer 4$1,420 AUD
Retailer 7$1,590 AUD
Retailer 5$1,647 AUD
Retailer 8$1,900 AUD
Retailer 9$2,371 AUD
Retailer 6$2,631 AUD
Retailer 3$3,550 AUD
Retailer 10$4,717 AUD
MOH London$5,586 AUD

16 data points across 10 retailers

11 retailers$857 AUD to $5,586 AUD

A
Cheapest Retailer
-
$857 AUD
B+
Retailer 2
-
$1,420 AUD
View
B+
Retailer 3
-
$1,544 AUD
View
B
Retailer 4
-
$1,590 AUD
View
Final sale: no returns
Retailer 5
-
$1,647 AUD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$1,647 AUD
View
B
Retailer 7
-
$1,900 AUD
View
B
Retailer 8
-
$2,631 AUD
View
B
Retailer 9
-
$3,087 AUD
View
B
Retailer 10
-
$3,550 AUD
View
Most Expensive
B
MOH London
LG436047370 · Nov 3
$5,586 AUD
£3,079 GBP
View
10 more retailers have this diamond
Prices start from $857 AUDSave up to $4,729 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
$857 AUD