Unit GEMMOLOGY
- Course
- Geosciences for risk and environment management
- Study-unit Code
- A002317
- Curriculum
- Geosciences for environmental sustainability
- Teacher
- Sabrina Nazzareni
- Teachers
-
- Sabrina Nazzareni
- Hours
- 42 ore - Sabrina Nazzareni
- CFU
- 6
- Course Regulation
- Coorte 2021
- Offered
- 2021/22
- Learning activities
- Affine/integrativa
- Area
- Attività formative affini o integrative
- Academic discipline
- GEO/06
- Type of study-unit
- Opzionale (Optional)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- English
- Contents
- Basic principles of gemmology. Short introduction into geology of
gemstone deposits. Gemstones fashioning and use in jewellery.
Diamonds and coloured gemstones. Basics on the main techniques to
identify and to compare gem materials, treatments and synthetics to
distinguish between gemstones. - Reference texts
- “Gemmology” P.G. Read Butterworth
- Educational objectives
- Students will acquire knowledge on:
Basic principles of gemmology
geology of gemstone deposits.
Gemstones fashioning and use in jewellery
Basics on the analytical techniques to identify natural, synthetics and
treated gems - Prerequisites
- In order to be able to understand the subject of the course students are
required to have basic knowledge of geology, mineralogy - Teaching methods
- face-to-face Practical training
- Learning verification modality
- The exam consists of a written and pratical test with closed answer
aiming to test the level of knowledge reached. Duration 1 hour.
Learning Objective: basic skills on basic gemmology, ability to identify
different types of gems, basic expertise on analytical techniques used to
study gems. - Extended program
- 1 Basic principles of gemmology: Definitions of gems, their beauty, rarity
and durability, and aspects of colour and light. Principles of physical
properties of gemstones. The value and price factors of gemstones.
Examples Diamond and Tanzanite.
2 Short introduction into geology of gemstone deposits: The geology of
gems, where they’re mined and ethics surrounding their extraction. The
origin and formation of gemstones in different ore deposits.
3 Gemstones fashioning and use in jewellery: different types of cuts and
facets with cabochons, beads and other forms. Gemstone treatments:
heat, irradiation, oil and resin treatments.
4 Diamonds and coloured gemstones: Silica gems (varieties of quartz and
chalcedony), feldspars (such as moonstone), organic gems (such as
pearls, amber and coral). Mainstream gems including corundum (ruby
and sapphire), diamond, beryl (including emerald, aquamarine and
morganite), tourmaline, garnet (including tsavorite), spinel, zircon,
tanzanite, jade, opal and numerous others including rare and lesser
known gemstones.
formazione delle gemme in differenti depositi.
4. moda delle gemme e uso in gioielleria: diversi tipi di tagli e
sfaccettature con cabochons, perle e altre forme. trattamento delle
gemme: riscaldamento, irradiazione trattamenti con oli e resine
5. diamanti e gemme colorate: gemme di silicio (quarzo e calcedonio),
feldspati (pietra di luna), gemme organiche (perle, ambre e coralli).
mainstream gemme corindone (rubini e zaffiri) diamanti
berillio(smeraldo, acquamarina e morganite) tormaline, granai
(tsavoritàe) spinelli, zircone, tanzanite, giada opale etc.
6. basi delle principali tecniche per identificare e comparare gemme,
trattamento e sintetici : diffrazione di raggi-X spettroscopie IR, Raman e
UV, lenti a mono rifrattometro, inclusioni fluide.
5 Basics on the main techniques to identify and to compare gem
materials, treatments and synthetics to distinguish between gemstones:
x-rays diffraction, IR- Raman- and UV-spectroscopies, hand lens,
refractometer, fluid inclusions observations.