Beautiful gem. Thank you!
|Dimensions (mm)||9.98 x 7.97 x 3.85mm|
|Weight (carats)||2.095 carats|
Grandidierite is a mineral that was first discovered in 1902 in southern Madagascar. The mineral was named in honor of French explorer Alfred Grandidier (1836–1912) who studied the natural history of Madagascar.
A rather rare mineral, blue-green grandidierite is seldom seen in gem or jewelry collections. Translucent material is sometimes cut into cabochons. Faceted pieces are rare. As cabochons, translucent grandidierite can range from 1 to 10 carats and up to about one inch in size. Most material is generally opaque.
Since its discovery in 1902, most grandidierite used as a gem has been translucent. Recent discoveries of transparent material in Sri Lanka (around 2000) and a new deposit in Madagascar (2014) have resulted in faceted gemstones.
Grandidierites appear bluer in color the more iron (Fe) they contain. A recently discovered gemstone, blue ominelite is the Fe-analogue (Fe, Mg) to grandidierite (Mg, Fe).
Grandidierites display strong trichroic pleochroism. That means they can show three different colors depending on the viewing angle: dark blue-green, colorless (sometimes a very light yellow), or dark green.
While trichroism can usually help distinguish grandidierites from other gems, lazulites can occur with blue-green colors and show colorless/blue/dark blue pleochroism. They also appear cabbed and, more rarely, faceted. Nevertheless, lazulites have somewhat higher refractive indices and specific gravity. Grandidierites also have greater hardness.
Please pay your stones in between
five days or contact me. Otherwise I need to cancel the deal.
If there is anything you shouldn't be satisfied with please just let me now and we will find a way to solve every problem. My aim is to make you happy with beautiful stones of good quality, good communication is the easiest way to understand the others´ needs.
Decent stone quality. Shipping was a little slow but not because of the seller. I will continue to do business with this seller. IHR them!
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|Starts||30th Mar 2021 11:23pm PDT|
|Ends||27th Apr 2021 11:23pm PDT|
|Express Shipping||$70.00||5 days|
|Registered Shipping||$18.00||21 days|
|Standard Shipping - Tracked||$16.00||21 days|
|Standard Shipping - Untracked||$15.00||28 days|
|Shipping Insurance all providers $8.00 (optional)|