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Marquise|Lab Grown|IGI

1.55ct K SI1 Marquise Lab Grown Diamond

EX • K/SI1 • IGI LG436072673

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436072673

Diamond specifications and retailer prices

From $1,368 AUD
As of November 6, 2026
Save $4,001 AUD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,369 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436072673 or 436072673. Listed at 9 retailers as of November 5, 2026, with prices from $1,368 to $5,369, a $4,001 spread on the same certified stone. MOH London lists it at $5,369. 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

1.55
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436072673
Dimensions11.27 × 6.26 × 3.85 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
11.27 mm6.26 mm1.55 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436072673
Side View
Table 61.5%Crown 34°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 61.5%

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: $5,369 AUD|Low: $1,314 AUD|High: $5,456 AUD|Avg: $2,826 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$1,368 AUD
Retailer 5$1,588 AUD
Retailer 8$1,735 AUD
Retailer 2$1,841 AUD
Retailer 7$2,339 AUD
Retailer 6$2,541 AUD
Retailer 3$3,422 AUD
Retailer 9$4,544 AUD
MOH London$5,369 AUD

19 data points across 9 retailers

9 retailers$1,368 AUD to $5,369 AUD

A
Cheapest Retailer
-
$1,368 AUD
A
Retailer 2
-
$1,489 AUD
View
Retailer 3
-
$1,588 AUD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$1,588 AUD
View
B+
Retailer 5
-
$1,841 AUD
View
B+
Retailer 6
-
$2,541 AUD
View
B
Retailer 7
-
$3,422 AUD
View
B
Retailer 8
-
$4,464 AUD
View
Most Expensive
B
MOH London
LG436072673 · Nov 5
$5,369 AUD
£2,905 GBP
View
8 more retailers have this diamond
Prices start from $1,368 AUDSave up to $4,001 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
1.55ct Marquise
$1,368 AUD