Gemstones
4
Valentina Molon
1 course
How to choose the perfect diamond for your engagement ring
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students
1.5 hours
content
Apr 2022
updated
$89.99
Jewellery Design a
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Gemmology Basics for Better Gemstones & Jewellery Purchase
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1 hour
content
Oct 2020
updated
FREE
Matteo Oberto
7 courses
Crystals and Precious Stones: Become an Expert
12
students
4 hours
content
Jan 2023
updated
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Leticia Paramita
5 courses
Memahami 4C untuk Memilih Berlian Berkualitas
28
students
37 mins
content
Jul 2022
updated
$19.99