CaratHunter
Plans
Marquise|Lab Grown|IGI

1.50ct D SI1 Marquise Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From $337 SGD
$264 USD
As of November 2, 2026
Save $81 SGD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,344 SGD at NZ Jewellers · As of October 8, 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) and certified by IGI. Listed at 6 retailers as of November 1, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.75 × 5.92 × 3.80 mm
L/W Ratio1.98
Top View
11.75 mm5.92 mm1.50 ctD / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $1,344 SGD|Low: $337 SGD|High: $1,891 SGD|Avg: $696 SGD|-28.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 21, 2026
Retailer 5$337 SGD
Retailer 2$391 SGD
Retailer 3$418 SGD
Retailer 4$468 SGD
NZ Jewellers$1,344 SGD

24 data points across 5 retailers

6 retailers$337 SGD to $418 SGD

B+
Cheapest Retailer
-
$337 SGD
$264 USD
Retailer 2
-
$337 SGD
$264 USD
View
Price last confirmed 22 days ago
Retailer 3
-
$391 SGD
$306 USD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
$391 SGD
$306 USD
View
B+
Retailer 5
-
$418 SGD
$327 USD
View
Most Expensive
NZ Jewellers
75a15a04-9ed6-491f-aac9-8cbb6ee9410f · Oct 8
$1,344 SGD
$1,051 USD
View
Price last confirmed 25 days ago
5 more retailers have this diamond
Prices start from $337 SGDSave up to $81 SGD

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.

B+
1.50ct Marquise
$337 SGD