SH0318 : 21.87ct Green Sphene – 18x16mm

US$ 6,054

Rated 5.0 out of 5 based on 347 customer ratings

Based on 390 Reviews

Loose Sphene Gemstone Certified Sphene
Sphene price per carat $277

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Gem Type Natural Sphene
Piece(s) 1
Weight (ct) 21.87
Shape Cushion
Treatment No Treatment
Clarity VS
Size (mm) 18.52 x 16.10 x 8.74
Origin Madagascar
Lab /
Cert no. :
Type Natural Sphene
Piece(s) 1
Weight (ct) 21.87
Shape Cushion
Treatment No Treatment
Clarity VS
Size (mm) 18.52 x 16.10 x 8.74
Origin Madagascar
Lab /
Cert no. :

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SKU: SH0318 Category: Tags: ,
SH0318 : 21.87ct Green Sphene – 18x16mm

All our items are 100% Natural Gemstones – no lab or synthetic.

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Color Scheme


Green

This color scheme is generated by the system using the colors from the product image.

*For Reference only

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SH0318 Gemstone Color Scheme

CLARITY UNDERSTANDING


Gemstone clarity scale

VS

Very Slight (VS) Clarity: These are usually eye clean stones. They have slight inclusions visible to a trained eye or under magnification.

Gemstone Shape


Gemstone Shape Chart

Cushion

This is the geometric shape for the gemstone. Some shapes has variations due to dimension.

GEMSTONE CUT TYPE


Gemstone Cut

Modified Brilliant Cut

Cut to perfection to maintain high quality products in our inventory.

Transparent Pricing


Our Gemstones are cut & polishd by the same craftsman who make gemstones luxury brands, but sold at a fraction of the price.

We avoid traditional 10x mark-ups by being 100% transparent in our pricing and offer mine-to-market business model.

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$6,054

STAR LANKA PRICE

$13,899

ESTIMATE RETAIL PRICE

SH0318 : 21.87ct Green Sphene – 18x16mm
SH0318 : 21.87ct Green Sphene – 18x16mm
SH0318 : 21.87ct Green Sphene – 18x16mm
SH0318 : 21.87ct Green Sphene – 18x16mm

United States

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THAILAND

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TRADE NAME
SPHENE
Mineral : Titanite
Mohs Hardness : 5.0 - 5.5
Refractive Index : 1.843 - 2.110
Specific Gravity : 3.50
LEARN MORE

VALUE


We all know that color, clarity and carat are all factors when valuing gemstones, combined with the mastery and skill shown in the cut. In regard to Sphenes, lighter tones such as yellows, light oranges and greens best highlight the stones dispersion and thus are the preferred colors for collectors and jewelers.

Chrome Sphene is the most valuable. The stones sources in Baja California are the color of ine emeralds and extremely rare, especially is clean and larger than 1 carat. Brazilian examples are yellow with a sleepy look. They are also less bright than those in Baja California. However, some of the largest and most impressive green gems have been cut from Indian material.

Sphene gemstones are rarely eye clean and size is a definite premium characteristic of the stone.


INFORMATION


Sphene or titanite are part of a titanite mineral group and it is the titanium-rich member. It is the only member of the group commonly used as a gemstone and in jewelry. However these stones remain little known to most jewelry enthusiasts and gemstone collectors, despite reasonable availability.

Sphene’s relatively low hardness (5 to 5.5) and distinct cleavage make it a risk to be used in jewelry. However, its gemological properties make it a desirable gemstone for collectors as well as adventurous jewelry enthusiasts.

Sphenes colors come from Iron and rare-earth element impurities, creating colors such as yellow, orange, brown, and green hues, with many gradations between them, and often show color zoning. Chromium colors the rare “chrome sphene” variety. It has an intense green color. Sphenes can also be colorless, red, blue, black, and brown.

Sphene’s dispersion or fire ranks among the highest in the gem world. However, its body color, degree of inclusions, cutting orientation, and cutting style may enhance or obscure this feature.


SOURCE


Canada, Madagascar, and Mexico are the primary sources for Sphene gemstones. Baja California, Mexico produces yellow-brown, brown, green, and dark green (chrome) gemmy crystals up to 4 inches. This could be one of the world’s foremost sphene deposits. Madagascar produces green crystals, sometimes large. Canada produces brown and black crystals.

Historically, Zillerthal, Austria and Grisons, Switzerland both produced gems.

Other notable sources include:

  • Madagascar: twinned yellowish to greenish crystals, often gemmy.
  • Sri Lanka: dark brown, yellowish green, honey yellow.
  • Mettur, India (about 30 miles from Salem, Tamil Nadu, South India): yellow, brown, and green
  • Afghanistan; Kenya; Myanmar; Pakistan; Russia; New York, United States, Brazil

CARE


Sphene Gemstone can be spectacular jewelry if placed in a protective setting and only worn occasionally. The wearer needs to protect the stone from impacts, scratches, heat and acids, including sweat. They should never be cleaned using mechanical cleaning systems or ultrasonics. Clean your sphene gemstone with a soft brush, warm water and mild soap.

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4 days ago
Anonymous

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5 days ago
Holly F.us

Lovely stone. Thank you.

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5 days ago
Anonymous

It’s all good

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5 days ago
Anonymous

It’s all good.

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6 days ago
Anonymousus

Fast shipping and friendly service

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6 days ago
Brigitte D.at

Perfect service right from the start, very fast delivery

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6 days ago
Asher H.au

We have come to experience the same quality of service every time with Starlanka. They are always friendly, helpful and speedy.

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7 days ago
Sara R.au

Yet again Starlanka have exceeded all our expectations. Always so fast and efficient.

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1 week ago
Xiu Lingsg

Fantastic service! Suhail made good suggestions and because I was worried about authenticity, he somehow managed to arrange cash on delivery in Singapore! The contact also went out of his way to meet me at the appraiser office to check that the gem and cert were authentic! Prices are indeed wholesale pricing based on the appraiser’s value! Loving my new gem! I have full trust now in starlanka and definitely will be recommending it to my friends and family! Looking forward to buy more gems from them!

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