Description: 3.16 ct PGTL Certified AAA+ Grade Impressive Oval Cut (10 x 7 mm) Un-Heated Greenish Yellow Sphene Stone FREE PGTL Certificate VVS-VS Quality Un-Heated Orgin from Madagascar 100% Natural Genuine Mined from Earth Gemstone!!! Great Investment Gemstone - Easy Liquidity Genuinely Mined Gemstone Certified by PGTL Precious Gem Testing Laboratory - PGTL State Of The Art gem testing facility with the advantage of advanced testing equipment "Bid with 100% Confidence - Don't Miss This Opportunity - Free Certificate" Gem Type Sphene Color Greenish Yellow Shape Oval Size (LxWxD)9.61 x 7.15 x 5.92 mm Weight 3.16 ct Grade AAA+ Hardness 5.0 Luster Excellent Clarity VVS-VS Treatment Un-Heated Origin Madagascar 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. Track Page Views WithAuctiva's FREE Counter
Price: 470.99 USD
Location: Jeffersonville, Indiana
End Time: 2025-01-25T11:42:14.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Gemstone Type: Sphene
Stone Type: Sphene
Certified By: PGTL - PGTL Precious Gem Testing Laboratory
Total Carat Weight (TCW): 3.16
Total Carat Weight: 3.16
Size: 9.61 x 7.15 x 5.92 mm
Gemstone Color: Greenish Yellow
Fancy Color: Greenish Yellow
Gemstone Shape: Oval
Clarity: VVS-VS
Gemstone Treatment: Un-Heated
Country/Region of Manufacture: Madagascar
Brand: PUHARGEMS
Item Length: 9.61 mm
Item Width: 7.15 mm
Item Depth: 5.92 mm
Transparency: Transparent
Cut Grade: Excellent
Cut: Excellent
Certification: PGTL
Country of Origin: Madagascar
Grade: AAA+
Luster: Excellent
Natural/Lab-Created: Natural
Number of Pieces: 1
Hardness: 5.0 Mohs scale
Refractive Index: 1.84-2.03
Specific Gravity: 3.53
SKU: 161167-7K26ON
Modified Item: No
Gemstone Creation: Natural
Gemstone Form: Polished
Gemstone Clarity Grade: Loupe Clean To Eye Clean
