Southwest Florida Fossil Society
Monthly Meetings
The monthly meetings are highlighted by having professional or highly qualified avocational paleontologists bring us lectures, slide programs, or updates on current research.
Click here for Images of Items for our PREVIOUS Fossil Auction 2017
July 8th, 2017 7:00 pm

GEMSTONES BIRTHSTONES
Geraldine Vest, Ph.D., FGA, GG(GIA)


How do you tell if a gemstone is natural or synthetic or imitation? First, we will look at the faceted gemstones used as birthstones: January-garnet, February-amethyst, March-aquamarine, April-diamond, May-emerald, June-alexandrite, July-Ruby, August-Peridot, September-blue sapphire, October-pink tourmaline, November-imperial golden topaz, and December-blue zircon (and a few others like iolite and citrine). Besides measuring the physical properties to identify the material, the microscope (or a 10x loupe) is then used to tell natural from synthetic materials. This presentation will show how synthetics are made and show several pictures of what inclusions they contain and several pictures of what inclusions are in natural gem materials. In a short time, I cannot teach you how to identify all gemstones but I will show some diagnostic inclusions that can be used to tell some gemstones if these inclusions are present. If gemstones are completely clean, it may not be to tell if they are synthetic. Imitation gemstones may look like what they are imitating but they will not have the same properties like hardness, density or optical properties.


FOSSIL (Fostering Opportunities for Synergistic STEM with Informal Learners) is a project funded by the National Science Foundation and headquartered at the Florida Museum of Natural History in Gainesville. FOSSIL is developing a national community that includes amateur and professional paleontologists; our research indicates that more than 60 amateur fossil clubs and societies exist in the USA, but they are not well coordinated in their activities. Overarching goals of the FOSSIL Project include enhanced collaborations between amateurs and professionals, knowledge-building about paleontology, access to resources for lifelong learning, and development of a viable learning community focused on topics such as collections (including digitization), evolution, and K-12 outreach. In addition to more traditional means, such as our newsletter (available at www.myfossil.org/newsletters/), FOSSIL is developing an interactive online community (www.myFOSSIL.org) and using social media (Facebook and Twitter) to foster communication and interactions, and thus promoting the concept of 'social paleontology.' "
 
Watch "Good Question: Why is Venice the 'shark's tooth capital of the world?'" on YouTube
Meetings are held on the second Saturday of the month.

Fossil Society Meeting is held at:
Punta Gorda Historical Society
118 Sullivan Street
Punta Gorda, FL 33950


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Directions to Punta Gorda Historical Society
(click "directions" on map above for Google directions)

Directions to Meeting in Downtown Punta Gorda

From U.S. 41 southbound. Turn left on E. Retta Esplanade. Go a short distance and turn right on Sullivan St. The building is not far, on your left side.

From U.S. 41 northbound. Turn left on Hwy. 17 (W. Marion Ave.) Go a short distance and turn right on Sullivan St. The building is not far, on your right side.

From I-75 exit at Exit 164. Turn left onto US-17 S/Duncan Rd. Go approximately 2.4 miles. Turn Right on Sullivan St. The building is not far, on your right side.

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