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Marquise|Lab Grown|IGI

1.51ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG567351529

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG567351529

Diamond specifications and retailer prices

From $377 AUD
$265 USD
As of November 2, 2026
Save $1,499 AUD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,877 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567351529 or 567351529. Listed at 18 retailers as of November 1, 2026, with prices from $377 to $1,877, a $1,499 spread on the same certified stone. MOH London lists it at $1,877. 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

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567351529
Dimensions11.69 × 6.00 × 3.81 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.69 mm6.00 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567351529
Side View
Table 58.0%Crown 36.4°Girdle: MediumPavilion 40.5°Culet: NoneDepth 63.5%

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 2
Current: $1,877 AUD|Low: $377 AUD|High: $2,605 AUD|Avg: $1,065 AUD|-27.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 15$377 AUD
Retailer 13$438 AUD
Retailer 3$443 AUD
Retailer 14$468 AUD
Retailer 5$547 AUD
Retailer 4$662 AUD
Retailer 11$698 AUD
Retailer 7$733 AUD
Retailer 12$779 AUD
Retailer 18$841 AUD
Retailer 2$889 AUD
Retailer 8$1,040 AUD
Retailer 17$1,438 AUD
Retailer 16$1,505 AUD
Retailer 9$1,581 AUD
Retailer 10$1,623 AUD
Retailer 6$1,865 AUD
MOH London$1,877 AUD

42 data points across 18 retailers

18 retailers$377 AUD to $1,877 AUD

A
Cheapest Retailer
-
$377 AUD
$265 USD
A
Retailer 2
-
$438 AUD
$308 USD
View
A
Retailer 3
-
$443 AUD
$311 USD
View
Final sale: no returns
A
Retailer 4
-
$468 AUD
$329 USD
View
A
Retailer 5
-
$547 AUD
HK$3,000 HKD
View
A
Retailer 6
-
$662 AUD
$465 USD
View
A
Retailer 7
-
$698 AUD
$490 USD
View
A
Retailer 8
-
$733 AUD
$515 USD
View
A
Retailer 9
-
$779 AUD
€521 EUR
View
B+
Retailer 10
-
$841 AUD
$591 USD
View
Retailer 11
-
$874 AUD
£484 GBP
View
Price last confirmed 17 days ago
B+
Retailer 12
-
$889 AUD
£492 GBP
View
Retailer 13
-
$1,040 AUD
$731 USD
View
Price last confirmed 9 days ago
Retailer 14
-
$1,438 AUD
$1,010 USD
View
Price last confirmed 7 days ago
B
Retailer 15
-
$1,505 AUD
$1,057 USD
View
B
Retailer 16
-
$1,581 AUD
SGD 1,501 SGD
View
B
Retailer 17
-
$1,865 AUD
$1,310 USD
View
Most Expensive
B
MOH London
LG567351529 · Nov 1
$1,877 AUD
£1,038 GBP
View
17 more retailers have this diamond
Prices start from $377 AUDSave up to $1,499 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
1.51ct Marquise
$377 AUD