Allaboutlearning
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Gem Grade Black Tourmaline from Afghanistan (10 to 20 g large size complete pieces)
Large pieces - 40 gram lot (0.09 pound = 1.4 ounce)
Size: 10 to 20 gram each piece (50 to 100 carat)
Dimension: 13x14x31 mm to 13x14x50 mm (0.5x0.5x1.2 to 0.5x0.5x2.0 inch
About 2 to 3 pieces in one lot.
The pictures in our listing are just for reference as we are selling multiple lots with same pictures.
***
Tourmaline
Color: Colorless, pink, brown, red, yellow, green, blue, black, violet, multi-colored
Moh's Harness: 7-7½
Specific Gravity: 2.82-3.32
Refractive Index: 1.614-1.666
Double Refraction: -0.014 to -0.032
Fluorescence: Weak or none
Cleavage: Indistinct
Fracture: Uneven, small conchoidal, brittle
Crystal System: Trigonal. Long crystals with triangular cross section and round sides.
Tourmaline's name comes from the Sinhalese word "turmali," which means "mixed." Tourmaline, occurring in more colors and combinations of colors than any other gemstone variety, lives up to its name. The many different colors or Tourmaline mean that this stone can easily be mistaken for just about any other gemstone.
One of the most versatile of gemstones, tourmaline is available in every color, from colorless to black. You can find every tone from pastel to dark, and even with one or more colors appearing in the same stone. It truly is a wondrous and fascinating stone!
Known for centuries, tourmaline first gained popularity when the Dutch began to import it in the early 17th century from Sri Lanka .
Color is the major characteristic for tourmaline. This stone is found in more hues, shades and nuances than any other gem. Here are some of the most common varieties that are recognized in the gem trade.
Tourmaline has strong pleochroism , which means you can see different colors or depths of color when viewed at different angles, such as when you rotate the stone in the light.
| Item Specifics | |
|---|---|
| Total Carat Weight (TCW) : | 2500 |
| Natural/Lab-Created : | Natural |
| Color : | Black |
| Shape : | Rough |
| Treatment : | Not Enhanced |
| Brand : | Unbranded |
| Country/Region of Manufacture : | Afghanistan |
| Country of Manufacture : | Afghanistan |
| Carat Range : | Greater than 50 |
| Gemstone : | Tourmaline Gemstone |
| Type : | 100% Natural |
| Variety/Type : | Black |
| Transparency : | Opaque |
| Cut Grade : | Good |
| Modified Item : | No |
| Country of Origin : | Afghanistan |
| Gemstone Type : | Tourmaline |
| Gemstone Color : | Black |
| Gemstone Creation : | Natural |
| Gemstone Form : | Rough |
| Gemstone Treatment : | Not Enhanced |
| Gemstone Clarity Grade : | Eye Clean |
| Gemstone Effect : | Iridescence |
| Wholesale : | No |
| Vintage : | No |
Payment: By Paypal
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost.
We will answer messages in 24 hours during working days.
[ Policy: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ]
Allaboutlearning
Your best online business partner
Gem Grade Black Tourmaline 10 Gram to 20 g Size Complete Pcs 40 gram Lot
Gem Grade Black Tourmaline from Afghanistan (10 to 20 g large size complete pieces)
Large pieces - 40 gram lot (0.09 pound = 1.4 ounce)
Size: 10 to 20 gram each piece (50 to 100 carat)
Dimension: 13x14x31 mm to 13x14x50 mm (0.5x0.5x1.2 to 0.5x0.5x2.0 inch
The pictures in our listing are just for reference as we are selling multiple lots with same pictures.
*** Tourmaline Color: Colorless, pink, brown, red, yellow, green, blue, black, violet, multi-colored Moh's Harness: 7-7½ Specific Gravity: 2.82-3.32 Refractive Index: 1.614-1.666 Double Refraction: -0.014 to -0.032 Fluorescence: Weak or none Cleavage: Indistinct Fracture: Uneven, small conchoidal, brittle Crystal System: Trigonal. Long crystals with triangular cross section and round sides. Tourmaline's name comes from the Sinhalese word "turmali," which means "mixed." Tourmaline, occurring in more colors and combinations of colors than any other gemstone variety, lives up to its name. The many different colors or Tourmaline mean that this stone can easily be mistaken for just about any other gemstone. One of the most versatile of gemstones, tourmaline is available in every color, from colorless to black. You can find every tone from pastel to dark, and even with one or more colors appearing in the same stone. It truly is a wondrous and fascinating stone! Known for centuries, tourmaline first gained popularity when the Dutch began to import it in the early 17th century from Sri Lanka . Color is the major characteristic for tourmaline. This stone is found in more hues, shades and nuances than any other gem. Here are some of the most common varieties that are recognized in the gem trade. Tourmaline has strong pleochroism , which means you can see different colors or depths of color when viewed at different angles, such as when you rotate the stone in the light.
Payment
Payment: By Paypal Shipping cost
Free shipping cost. We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery. We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery. Return policy
Returns: We accept returns with any reason in 30 days. Buyer will bear the return shipping cost. Messages
We will answer messages in 24 hours during working days. [ Policy: This is the contents of your policies. You can add a banner for this policy as header and add text descriptions here. The text descriptions can be different Font Size, Font Color, Style and even graphics and icons are also accepted. ] Copyright of XXXXX. All right reserved. |
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