When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay.
0.73 ct Significant Pear Cut (6 x 6 mm) Pakistan Green Sphene Natural Gemstone
This product data sheet is originally written in English.
0.73 ct Significant Pear Cut (6 x 6 mm) Pakistan Green Sphene Natural Gemstone
Rare Stone! Unheated / Untreated Green Orgin From Pakistan 100% Natural Genuine Mined from Earth Gemstone!!!
Gem Type
Sphene
Color
Green
Shape
Pear
Size (LxWxD)
6.01 x 5.66 x 3.17 mm
Weight
0.73 ct
Grade
AAA
Hardness
5.0
Luster
Excellent
Clarity
VS
Treatment
Unheated / Untreated
Origin
Pakistan
RefractiveIndex
1.84-2.03
Specific Gravity
3.53
FL
IF
VVS1
VVS2
VS1
VS2
SI1
SI2
L1
L2
L3
L4
Flawless Internally Flawless
Very Very Slightly Imperfect
Very Slightly Imperfect
Slightly Imperfect
Imperfect
Opaque
Sphene Mohs Hardness - 5 Found in - Russia & Pakistan Titanite, or sphene (from the Greek sphenos, meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium. The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and 'discredited' the name sphene as of 1982, although commonly papers and books initially identify the mineral using both names. Sphene was the most commonly used name until the IMA decision, although both were well known. Some authorities think it is less confusing as the word is used to describe any chemical or crystal with oxidized titanium such as the rare earth titanate pyrochlores series and many of the minerals with the perovskite structure. The name sphene continues to be publishable in peer-reviewed scientific literature, e.g. a paper by Hayden et al. was published in early 2008 in the journal Contributions to Mineralogy and Petrology. Sphene persists as the informal name for titanite gemstones.
Mohs Hardness - 5 Found in - Russia & Pakistan Titanite, or sphene (from the Greek sphenos, meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium. The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and 'discredited' the name sphene as of 1982, although commonly papers and books initially identify the mineral using both names. Sphene was the most commonly used name until the IMA decision, although both were well known. Some authorities think it is less confusing as the word is used to describe any chemical or crystal with oxidize
Mohs Hardness - 5 Found in - Russia & Pakistan Titanite, or sphene (from the Greek sphenos, meaning wedge), is a calcium titanium nesosilicate mineral, CaTiSiO5. Trace impurities of iron and aluminium are typically present. Also commonly present are rare earth metals including cerium and yttrium; calcium may be partly replaced by thorium. The International Mineralogical Association Commission on New Minerals and Mineral Names (CNMMN) adopted the name titanite and 'discredited' the name sphene as of 1982, although commonly papers and books initially identify the mineral using both names. Sphene was the most commonly used name until the IMA decision, although both were well known. Some authorities think it is less confusing as the word is used to describe any chemical or crystal with oxidize