What is sphene stone?
Sphene is a very rare calcium titanium silicate that is hardly ever seen in jewelry or collections. Sphene is also called titanite, which derives from the fact that it is an ore of titanium. The name sphene comes from the Greek word for wedge, which describes the shape of the ends of sphene crystals.
What is sphene made of?
Sphene is made from calcium titanium silicates and is coloured by the element iron. Depending on their iron content, their colour palette ranges from yellow-green to green to brown. Due to its relatively low hardness (Mohs hardness 5 – 5.5), the machining of the Sphene gems is often difficult.
What is sphene used for?
Sphene continues to be the name used for titanite in the gem and jewelry industries. It is a minor gemstone that is popular with collectors because of its high dispersion. Sphene is one of the few minerals with a dispersion higher than diamond.
What type of mineral is sphene?
Titanite, or sphene (from the Greek sphenos (σφηνώ), meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO5.
Does sphene fluoresce?
Sphene is the older name of this mineral wich refers to its crystalshape. Titanite is the universial name amongst mineralogists today and refers to its content of titanium. Greenovite is the name given to red or pink sphene….
| Sphene | |
|---|---|
| Pleochroism | Distinct to strong |
Where does the gemstone sphene come from?
The primary sources of sphene are Canada, Madagascar and Mexico, IGS says. Baja California, Mexico produces yellow-brown, brown, green and dark green (chrome) crystals up to 4 inches long, making it one of the world’s main sphene deposits.
Where is titanite found?
Description: Titanite is a common accessory mineral usually found as tiny grains in many different rocks. It is common in plutonic igneous rocks such as granite, diorite and syenite. Titanite also is a common accessory in metamorphic rocks such as gneiss, schist or marbles.
Is titanite the same as sphene?
Sphene, also known as titanite, has rich body colors, strong trichroism, and a fire that exceeds diamond. Although softer than many more popular gems, sphenes can make wonderful jewelry stones if set and maintained properly.
What stone glows red under black light?
The Hope Diamond Phosphorescence A famous example of a gemstone that strongly phosphoresces is the blue Hope Diamond, which glows a bright red for several minutes after being excited by short wave UV light.