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Marquise|Lab Grown|IGI

1.50ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG549201506

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG549201506

Diamond specifications and retailer prices

From $548 NZD
$309 USD
As of October 31, 2026
Save $1,777 NZD (76%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,624 NZD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.5ct lab-grown marquise diamond

This 1.5ct 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 LG549201506 or 549201506. Listed at 23 retailers as of October 31, 2026, with a 324% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG549201506
Dimensions12.30 × 5.98 × 3.61 mm
L/W Ratio2.06
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
12.30 mm5.98 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG549201506
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 60.4%

Caratlytics Score

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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: Oct 31
Current: $1,101 NZD|Low: $468 NZD|High: $3,227 NZD|Avg: $1,327 NZD|-23.3%
Retailer 1
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
November 2, 2026
Retailer 6$468 NZD
Retailer 15$548 NZD
Retailer 4$580 NZD
Retailer 2$681 NZD
Retailer 16$820 NZD
Retailer 12$825 NZD
Retailer 5$903 NZD
Retailer 10$965 NZD
Retailer 14$1,045 NZD
Retailer 1$1,101 NZD
Retailer 7$1,288 NZD
Retailer 11$1,405 NZD
Retailer 13$1,781 NZD
Retailer 8$1,960 NZD
Retailer 3$2,324 NZD
Retailer 9$2,325 NZD

44 data points across 16 retailers

23 retailers$548 NZD to $2,325 NZD

Retailer 1
-
$468 NZD
$264 USD
Price last confirmed 25 days ago
A
Retailer 2
-
$548 NZD
$309 USD
View
Final sale: no returns
Retailer 3
-
$580 NZD
$327 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$580 NZD
$327 USD
View
Price last confirmed 22 days ago
Retailer 5
-
$658 NZD
$371 USD
View
Price last confirmed 33 days ago
A
Retailer 6
-
$681 NZD
HK$3,000 HKD
View
Retailer 7
-
$763 NZD
$430 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$806 NZD
$454 USD
View
Price last confirmed 34 days ago
A
Retailer 9
-
$820 NZD
$462 USD
View
A
Retailer 10
-
$825 NZD
$465 USD
View
B+
Retailer 11
-
$903 NZD
$509 USD
View
A
Retailer 12
-
$965 NZD
€518 EUR
View
B+
Retailer 13
-
$1,045 NZD
$589 USD
View
B+
Retailer 14
-
$1,101 NZD
£489 GBP
View
Retailer 15
-
$1,288 NZD
$726 USD
View
Price last confirmed 9 days ago
B
Retailer 16
-
$1,405 NZD
A$1,218 AUD
View
B
Retailer 17
-
$1,781 NZD
$1,004 USD
View
B
Retailer 18
-
$1,865 NZD
$1,051 USD
View
Retailer 19
-
$1,865 NZD
$1,051 USD
View
Price last confirmed 22 days ago
B
Retailer 20
-
$1,960 NZD
SGD 1,493 SGD
View
B
Retailer 21
-
$2,324 NZD
$1,310 USD
View
B
Retailer 22
-
$2,325 NZD
£1,032 GBP
View
Most Expensive
NZ Jewellers
e96fc7f9-6724-485c-94e8-08556ca16bb8 · Sep 30
$2,624 NZD
$1,479 USD
View
Price last confirmed 32 days ago
22 more retailers have this diamond
Prices start from $548 NZDSave up to $1,777 NZD

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
1.50ct Marquise
$548 NZD