I suspect that this stone is actually a Namibian tourmaline, as it has some of that neon look to it.  This is a very pretty medium bluish green or emeald green color . Color: Blue-Green, Cut: Elongated Scissor-Topped Emerald, Weight: 3.80, Dimensions: 6.3 x 13.4 mm. (Information supplied by photo contributor.) &copy; Daniel Stair, CustomGemstones.com

I suspect that this stone is actually a Namibian tourmaline, as it has some of that neon look to it. This is a very pretty medium bluish green or emeald green color . Color: Blue-Green, Cut: Elongated Scissor-Topped Emerald, Weight: 3.80, Dimensions: 6.3 x 13.4 mm. (Information supplied by photo contributor.) &copy; Daniel Stair, CustomGemstones.com

Tourmaline | Green | 3.80 ct

Tourmaline id-g-20877 - International Gem Society

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Tourmaline

I suspect that this stone is actually a Namibian tourmaline, as it has some of that neon look to it. This is a very pretty medium bluish green or emeald green color . Color: Blue-Green, Cut: Elongated Scissor-Topped Emerald, Weight: 3.80, Dimensions: 6.3 x 13.4 mm. (Information supplied by photo contributor.) <a href="http://customgemstones.com/" data-wpel-link="external" rel="nofollow external">© Daniel Stair, CustomGemstones.com</a>

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A geologist, environmental engineer and Caltech graduate, Addison&#8217;s interest in the mesmerizing and beautiful results of earth&#8217;s geological processes began in her elementary school&#8217;s environmental club. When she isn&#8217;t writing about gems and minerals, Addison spends winters studying ancient climates in Iceland and summers hiking the Colorado Rockies.

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The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as <a href="https://rockpeddler.com/product-category/instructional-materials/">Gram Faceting Designs</a>.

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Gemstone	Tourmaline
Natural or man made	Natural
Origin	Mozambique
Origin details	Mozambique
Carat Weight	3.80
Gem State	Faceted
Faceter	Daniel Stair
Color	Green
Transparency	Transparent