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Marquise|Lab Grown|IGI

1.63ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG436046743

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436046743

Diamond specifications and retailer prices

From $1,999 AUD
$1,406 USD
As of October 27, 2026
Save $4,657 AUD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,656 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.63ct lab-grown marquise diamond

This 1.63ct lab-grown marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046743 or 436046743. Listed at 11 retailers as of October 27, 2026, with prices from $1,999 to $6,656, a $4,657 spread on the same certified stone. MOH London lists it at $6,656. 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

1.63
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046743
Dimensions11.29 × 6.18 × 3.96 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
11.29 mm6.18 mm1.63 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436046743
Side View
Table 57.5%Crown 35.7°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 64.1%

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: Oct 27
Current: $6,656 AUD|Low: $1,918 AUD|High: $6,710 AUD|Avg: $3,530 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 2$1,999 AUD
Retailer 4$2,076 AUD
Retailer 7$2,238 AUD
Retailer 5$2,319 AUD
Retailer 8$2,559 AUD
Retailer 3$2,586 AUD
Retailer 10$3,169 AUD
Retailer 6$3,661 AUD
Retailer 9$4,207 AUD
Retailer 11$6,638 AUD
MOH London$6,656 AUD

13 data points across 11 retailers

11 retailers$1,999 AUD to $6,656 AUD

A
Cheapest Retailer
-
$1,999 AUD
$1,406 USD
B+
Retailer 2
-
$2,076 AUD
$1,460 USD
View
B+
Retailer 3
-
$2,174 AUD
$1,529 USD
View
B+
Retailer 4
-
$2,238 AUD
$1,574 USD
View
Final sale: no returns
B+
Retailer 5
-
$2,319 AUD
$1,631 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$2,319 AUD
$1,631 USD
View
B+
Retailer 7
-
$2,559 AUD
$1,800 USD
View
B
Retailer 8
-
$3,661 AUD
$2,575 USD
View
B
Retailer 9
-
$4,207 AUD
$2,959 USD
View
B
Retailer 10
-
$4,345 AUD
$3,056 USD
View
Most Expensive
B
MOH London
LG436046743 · Oct 29
$6,656 AUD
£3,686 GBP
View
10 more retailers have this diamond
Prices start from $1,999 AUDSave up to $4,657 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
1.63ct Marquise
$1,999 AUD