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Search results: “calcite” – Page 9
Showing 121–135 of 291 results
- Crystals, Minerals of the World, Top Shelf
AQUAMARINE CRYSTAL LARGE
A beautiful natural Aquamarine Crystal Large. What could be better than a gemstone in its natural crystal form? A large well formed and terminated crystal specimen. Pale blue in colour with natural termination and zoning near the top of crystal. A must for any serious collector or lover of fine gems.
Location:
Gilgit, Pakistan.Dimensions:
5.2cm x 3.6cm x 3.2cm, 69g.Beryl: Be3Al2(Si6O18) Beryllium Aluminum Silicate.
SKU: WEBLGPAQ-1 - Crystals, Minerals of the World, Top Shelf
LARGE AQUAMARINE CRYSTAL
A beautiful natural Large Aquamarine Crystal. What could be better than a gemstone in its natural crystal form? This is a large well formed and terminated crystal specimen. Pale blue in colour with natural termination and zoning near the top of crystal. This specimen is mounted on a perspex pad for enhanced display. A must for any serious collector or lover of fine gems.
Location:
Gilgit, Pakistan.Dimensions:
4.4cm x 5.5cm x 3.3cm, 142g.Formula: Be3Al2Si6O18.
SKU: WEBLGPAQ - Fluorescent Specimens, Metal Specimens, Minerals of the World, Rock 'n Slabs, Slabs, Top Shelf
WILLEMITE FLUORESCENT SLAB 02
-5%
Fluorescent Specimens, Metal Specimens, Minerals of the World, Rock 'n Slabs, Slabs, Top ShelfWILLEMITE FLUORESCENT SLAB 02
A stunning specimen of Willemite Fluorescent Slab showing off the brightest fluorescence of all natural minerals Willemite. This rare special specimen is short and long wave fluorescent. The dark grey metal shown in the natural light photos is Zinc ore Franklinite. The white mineral is Mangano Calcite, shows as Pink with UVA Long Wave and Orange with UVC Short Wave. The Willemite is Bright Mesmerising Green under both fluorescent wave lengths. Pics taken with shortwave, longwave, and sunlight. Very cool stuff and this is one of my very favorite rocks. This is a small high quality specimen with bright fluorescence at a bargain price. The Slab is intended as a specimen and may have natural fractures which may not make it suitable for Lapidary work.
To view this spectacular specimen’s fluorescent colours you will need a UVC Shortwave Lamp and UVA Longwave Lamp. Make sure you wear safety glasses. Willemite Franklinite Calcite is also known as the Christmas Tree Rock for the colours Green and Red. This is a quality collectable specimen with wow factor.
Location:
Franklin, New Jersey, USA.Dimensions:
1cm x 6cm x 12.5cm, 195g.Willemite, Zinc Silicate Zn2Sio4
Franklinite, Zinc Iron Manganese Oxide Zn2+Fe23+O4
Mangano Calcite, (Ca,Mn)CO3.
Check out more Fluorescent Specimens for sale here
The Historical Story of Franklin Mine
SKU: WFS02 - Fluorescent Specimens, Metal Specimens, Minerals of the World, Top Shelf
WILLEMITE FLUORESCENT FRANKLIN 007
Fluorescent Specimens, Metal Specimens, Minerals of the World, Top ShelfWILLEMITE FLUORESCENT FRANKLIN 007
A stunning specimen of Willemite Fluorescent Franklin showing off the brightest fluorescence of all natural minerals Willemite. This rare special specimen is short and long wave fluorescent and features large areas of Willemite and Calcite. The dark grey metal shown in the natural light photos is Zinc ore Franklinite. The white mineral is Mangano Calcite which in this case shows BIP Brief Intense Phosphorescence. Pics taken with shortwave, longwave, and sunlight. Very cool stuff and this is one of my very favorite rocks. To view this spectacular specimen you will need a UVC Shortwave Lamp and UVA Longwave Lamp. Make sure you wear safety glasses. This specimen shows Willemite Phosphorescence, which is when you take your UVC short wave away it will phosphoresce for a few seconds. Willemite Franklinite Calcite is also known as the Christmas Tree Rock for the colours Green and Red. This is a quality collectable specimen with wow factor.
Location:
Buckwheat Dump, Franklin, New Jersey, USA.Dimensions:
9.5cm x 4.6cm x 4.3cm, 250g.Willemite, Zinc Silicate.
Zn2Sio4.Franklinite, Zinc Iron Manganese Oxide
Zn2+Fe23+O4.Calcite, Calcium Carbonate
CaCO3.SKU: G1407 - Crystals, Minerals of the World, Top Shelf
AZURITE CRYSTAL MEXICO 2
Top Gemmy Azurite Crystal Mexico 2. This specimen is truly aesthetic showing great quality formations of Gem Crystal Azurite. Sharp terminations featuring Tabular and Prismatic crystals with splendid vitreous faces. All round an outstanding Top Shelf specimen. This location has closed and this quality is becoming very hard to come by. Mounted on a perspex display pad for enhanced display.
Dimensions:
3cm x 2.7cm x 2cm, 16.8g (not including perspex pad).Location:
Milpillas Mine, Nacozari, Sonora, Mexico.Azurite
Cu3(CO3)2(OH)2.SKU: MW7426-1 - Australian Minerals, Crystals, Minerals of the World
GLAUBERITE CRYSTALS
A lovely specimen of Glauberite Crystals. Initially these specimens are clear when first fished out of the mud with cut and bloodied hands. They turn white after contact with the Oxygen in the air. The fossicker who fished this one told me the second day was worse when cuts on his fingers were roughed up again. This happens when feeling around deep in the mud for them. Great fun. This is a rare and unusual Aussie mineral. The last big one found in an old box.
Location:
Snowtown, South Australia, Australia.Dimensions:
7.5cm x 7.1cm x 5.4cm, 101g.GLAUBERITE
Na2Ca(SO4)2,
Sodium Calcium Sulfate.SKU: C03xxx - Jewellery
TOP RHODOCHROSITE PENDANT
A beautiful Top Rhodochrosite Pendant in .925 Sterling Silver. Quality minimal silverwork accentuates the polished Rhodochrosite. This is a Top Rhodochrosite rectangle cabochon as you can tell from the deep pink colours. A stunning pendant for yourself or a loved one. This pendant comes complete with a 20″ sterling silver chain in a drawstring pouch to make an ideal gift. The super bright pink pic is with natural light from behind, outside. It is hard to come by this quality of colour and great zigzag banding.
Dimensions:
3.4cm x 1.5cm x 0.9cm, 10.08g
Location:
ArgentinaRhodochrosite: MnCO3.
SKU: SJ1815-1 - Fluorescent Specimens, Metal Specimens, Minerals of the World
WILLEMITE FLUORESCENT FRANKLIN 008
A stunning specimen of Willemite Fluorescent Franklin 008 showing off the brightest fluorescence of all natural minerals Willemite. This rare special specimen is short and long wave fluorescent. The dark grey metal shown in the natural light photos is Zinc ore Franklinite. The white mineral is Mangano Calcite which fluoresces pink orange and red under different UV light. This specimen has a good portion chunk of Franklinite metal shown i the daylight pic. Pics taken with shortwave, longwave, and sunlight. Very cool stuff and this is one of my very favorite rocks.
To view this spectacular specimen you will need a UVC Shortwave Lamp and UVA Longwave Lamp. Make sure you wear safety glasses. Willemite Franklinite Calcite is also known as the Christmas Tree Rock for the colours Green and Red. This is a quality collectable specimen with wow factor.
Location:
Franklin, New Jersey, USA.Dimensions:
5.8cm x 4.4cm x 3.1cm, 108g.Willemite, Zinc Silicate.
Zn2Sio4.Franklinite, Zinc Iron Manganese Oxide
Zn2+Fe23+O4.Calcite, Calcium Carbonate
CaCO3.SKU: G1408 - Fluorescent Specimens, Metal Specimens, Minerals of the World, Top Shelf
WILLEMITE FLUORESCENT FRANKLIN
Fluorescent Specimens, Metal Specimens, Minerals of the World, Top ShelfWILLEMITE FLUORESCENT FRANKLIN
WILLEMITE FLUORESCENT FRANKLIN
A stunning specimen of Willemite Fluorescent Franklin showing off the brightest fluorescence of all natural minerals Willemite. This rare special specimen is short and long wave fluorescent. The dark grey metal shown in the natural light photos is Zinc ore Franklinite. The white mineral is Mangano Calcite. Pics taken with shortwave, longwave, and sunlight. Very cool stuff and this is one of my very favorite rocks. To view this spectacular specimen you will need a UVC Shortwave Lamp and UVA Longwave Lamp. Make sure you wear safety glasses. Willemite Franklinite Calcite is also known as the Christmas Tree Rock for the colours Green and Red. This is a quality collectable specimen with wow factor.
Location:
Sterling Hill Mine, Franklin, New Jersey, USA.Dimensions:
6.5cm x 6.7cm x 5cm, 328g.Willemite, Zinc Silicate.
Zn2Sio4.Franklinite, Zinc Iron Manganese Oxide
Zn2+Fe23+O4.Calcite, Calcium Carbonate
CaCO3.SKU: n/a - Minerals of the World
AZURITE CLUSTER
Azurite Cluster with amazing electric blue colour and interesting formation. Different from other specimens we’ve seen and stock. You can see laminar forms of striated Azurite from the side. This Azurite Cluster is a very popular mineral because of its unparalleled vibrant colour, a deep blue called “azure”, hence its name. Azure is derived from the Arabic word for blue. This specimen is mounted on a perspex pad for enhanced display.
Dimensions:
9.7cm x 5.6cm x 3cm, 179g.Location:
Lumbumbashi, D.R. Congo.AZURITE: Cu3(CO3)2(OH)2
SKU: MW8265 - Crystals, Minerals of the World
AQUAMARINE CRYSTALS MICA MATRIX A
A rustic and natural Aquamarine Crystals Mica Matrix specimen. Featuring several well terminated clear Aquamarine crystals among the Mica blades matrix. There is one main clear crystal with two or three smaller crystals and an unidentified orange crystal in this piece. Well formed and terminated clear beryl make it a great collectable item. Many people prefer the natural clusters like this. The option is always there to improve the aesthetics and value of this specimen.
Location:
Paprok, Afghanistan.Dimensions:
4cm x 4.3cm x 5cm, 108g.Beryl: Be3Al2Si6O18.
SKU: MW5246-1 - Crystals, Minerals of the World, Quartz, Top Shelf
AMETHYST SPIRIT QUARTZ CLUSTER
A sweet Amethyst Spirit Quartz Cluster for the crystal lover. A natural delicately coloured Amethyst in a cluster that sits upright. Many tiny perfect little micro crystals surround and cover the top of the matrix and points. This is a very collectable piece of a popular mineral that will be a super new addition to your crystal toolbox or collection. RocknCrystals have been importing Spirit Quartz direct for many years and we always have several specimens online to choose from. Make someones Christmas extra special with this awesome cluster! For enhanced display specimen is mounted on a perspex pad.
Location:
Boekenhouthoek, South Africa.Dimensions:
8.6cm x 4.9cm x 5.2cm, 114g.Variety of:
Quartz, SiO2SKU: F0403 - Jade, Top Shelf
TOP BLACK JADE ROUGH
A grade Top Black Jade Rough ready for a crafts person to carve or make jewellery with. This is genuine true black nephrite jade from Cowell, South Australia (the best Black Jade in the world). This variant of jade is becoming more popular and is used, in particular, for carving into super-lustrous pendants and jewellery. One of the toughest rocks on the planet. The Black colour is from an inclusion of Iron of up to 8%. This is the best specimen from a lot of 1000kg.
To be honest I was hoping to save this one for my self but have no time for cutting stones. The stone has three cut faces with a square corner which makes it easy to hold in a vice for diamond saw cutting. There is the expected slight green that you can see with a strong Jade torch. One face you can see is polished roughly to 3000. Some pics are with wet and dry stone to show the quality of colour and polish with great reflection. This stone is best polished with aluminium oxide then diamond to get the mirror finish. You can see the reflection of a beautiful flower in the polished window on this Jade Stone.
Location:
Cowell, South Australia, Australia.Dimensions:
28cm x 22cm x 16cm, 17500g.Jade is a name that was applied to ornamental stones that were being brought to Europe from China and Central America. It wasn’t until 1863 that it was realized that Jade was being applied to two different minerals. The two minerals are both exquisite for the purposes that jade is put to task and are hard to distinguish from each other. Now both are called Jade.
Toughest Natural Stone in the World
SKU: n/a - Australian Minerals, Crystals, Quartz
AUSSIE AMETHYST CRYSTAL
A great Aussie Amethyst Crystal. Good natural point and some iron staining around the base of crystal. Just as it was when it came out of the ground. Australian Amethyst is not all that common, and many people do like to have a piece from here. This piece has a great termination and fits well in the hand. The Purple is so dark it appears black on a cloudy day. This specimen was difficult to photograph. One pic is backlit with a torch, other pics taken out doors on cloudy and bright sun days. There are some interesting internal zoning patterns also visible in the photos.
Location:
Wyloo Station, Western Australia.Dimensions:
5.7cm x 4.8cm x 4.1cm, 79g.Variety of: Quartz
SiO2.SKU: AAC - Crystals, Himalayan Quartz & Kyanite, Minerals of the World, Quartz
HIMALAYAN CHLORITE QUARTZ
A beautiful crystal of sought after Nepalese Himalayan Chlorite Quartz. Quartz Crystals with Chlorite throughout. One large double terminated needle quartz crystal with a few other attached attempting to form a star cluster. Mounted on a perspex pad. Chlorites are popular with healers and collectors alike for their healing and physical properties and rarity. We source our crystals directly from the miners.
Location:
Dhading District, Bagmati Zone, Nepal.Dimensions:
7cm x 3.3cm x 2.9cm, 6g.Iron Aluminum Magnesium Silicate Hydroxide.
(Fe, Mg, Al)6(Si, Al)4O10(OH)8.
SKU: MW7485
