Posted by Dillon Hartman on Jan 23rd 2018
One of our all time favorite gems is Chalcociderite. This rare natural gem is a rare cousin of Turquoise.This gem is stunningly beautiful and comes all sorts of colors from tan to green to orange, white and yellow. Often called Turquoise in the past it has come into its own in recent years in the jewelry world. With the growing popularity of Variscite, Chalcosiderite has also moved up in the gem world as it should have long ago. Infact, most of what is being called Nevada Variscite is actually Chalcosiderite.
Chalcosiderite is beloved for its wonderful colors, hardness and matrix patterns. Most of the high grade Chalcosiderite is features stunning spiderweb matrix. Many good examples come from Nevada. Such mines as the famous Damele mine, New Lander mine, and the Colorback mine to name a few greatly added to the popularity of high grade Chalcociderite. Most of this material was sold early on as Turquoise. Almost all of this material features gorgeous black spiderweb matrix.
Recently several old mines have been re-discovered and new mines found which have deposits of Chalcosiderite and Variscite. A few of these which have been gaining popularity are the Tortoise, Peacock, Miss Moffet, Seven Dwarfs, Poseidon, and Desert Bloom mines in Nevada and the Snowville mine in Utah, just to name a few.
Structure and Associated Minerals:There is a complete solution which exists between Chalcosiderite, CuFe6 (PO4)4 (OH)8:4H2O, and turquoise CuAl6 (PO4)4(OH)8:4H2O. Because of this, aluminum may partly substitute for iron in the mineral's crystal structure. In places like Lander County Nevada, Chalcosiderite and turquoise also occur together in the same general area.
Identification and Diagnostics:Gives a positive test for copper, iron and phosphates, but exact determinations between turquoise and chalcosiderite may require a chemical analysis of the mineral make up.
Occurrence, Localities and Origins:
A rare copper-iron secondary phosphate. It occurs only in a few places in the US, where it is associated with the oxidized zones of some copper deposits. In Lander County, Nevada it occurs at the Damale mine where it is found as emerald green nodules in association with variscite and faustite. It is also found at the Lander Ranch mine near Tenabo as well as the mines above.
2018 Tucson Gem and Mineral ShowEvery February, mobs of jewelers, rock hounds, gem dealers, paleontologists, Native Americans, geologists and the just plain curious converge on Tucson, Arizona for the annual Gem & Mineral Show. During the Winter 2018 Tucson Gem, Mineral and Fossil event, over 40 different independently owned and operated shows are held during the month, with over [...]
VarisciteVariscite is becoming one of the most popular semi-precious gemstones on today's market. You will see it being used in all styles of jewelry by all ethnicity of jewelers. Variscite is considered to be one of the rarer and lesser-known collector's gemstones available today. Its appearance often causes it to be confused with Turquoise, but Variscite's [...]
High Grade Turquoise in Gold JewelryWe have been working on some new 14k yellow gold jewelry. Available soon! Beautiful high grade Turquoise in 14k yellow gold by Nattarika Hartman and John Hartman. We have new women's rings, men's rings and more. All of the new gold jewelry features the finest of Natural American and Egyptian [...]
InstaGram 2000 Follower Jewelry GiveawayWe have been having a great time sharing our photos, stones, jewelry and process with customers and followers on InstaGram. We are late to the instagram phenomenon, but hey we are there now and having fun. We have been slowly and steadily building a following. We are growing daily and want [...]
The Number Eight Turquoise CollectionLooking for some good old time American Turquoise? What about some killer spiderweb Turquoise from one of the most famous Turquoise mines of all time. We be selling some of the best Turquoise on earth in cabochons, rough and jewelry. We have one of the largest collections of Number 8 Turquoise [...]
Egyptian Turquoise Jewelry and Gems We have been working with some wonderful new Turquoise, well new to us anyways. You may have noticed that we have posting new jewelry by John Hartman, Crystal Hartman and Nattarika Hartman with high grade Egyptian Turquoise. This material is gorgeous. The Egyptian Turquoise rough we have been lucky enough to [...]
Durango Silver at the 2017 Tucson Gem and Mineral ShowWell it has been a while since the Spring Tucson show, but better late than never to report. We had a great time at the spring Tucson Gem Show. We meet thousands of great people and made many new friends and business contacts. We saw many amazing [...]
eBay Turquoise and Gemstone Cabochon AuctionsHello all. Have you seen out gemstone auctions on ebay? You cannot miss these smoking deals. We are auctioning of some of our American Turquoise cabochons, Chinese Turquoise Cabochons, Persian Turquoise Cabochons, Mexican Turquoise, Sugilite, Variscite, and much more on eBay. You have to take a look. Click Here to [...]
The summer went by pretty quickly around here. For you too? We suddenly realized we hadn’t published our fall newsletter. We know you were waiting for it and it has not come yet! Right. Our apologies. Now it’s fall. The season when white is relegated to the closet but okay for the mountain peaks, and the coats come out [...]
All prices are in USD