Hey guys, we hope you enjoy our blog. The Bisanar Company will be talking
about different gem stones and jewelry treatment. We would love to hear
your feed back.
For our first post we will be talking about the Color Change Alexandrite. Many
refer to this gem as the "emerald by day, ruby by night" . Alexandrite is a
birthstone for June and is the gem for the 55th wedding anniversary.
Discovered in the 1830's in Russia's Ural Mountains, today it is found in
Sri Lanka, East Africa, and Brazil. Alexandrite is a very rare color change
variety of the mineral chrysoberyl. A high quality alexandrite is green to blue
in daylight and changes to red, purplish red in incandescent light
"emerald by day, ruby by night" . A high quality alexandrite will
have few inclusions, and a high color change. Very rare alexandrite
have a needle like inclusion that create a cat's eye. Alexandrite is also a
strong pleochroic gem meaning it will show many colors when viewed from
different angles. However, the color change doesn't happen from the
pleochroism but from the gem's light absorbing properties.
Alexandrite is available in many different cuts. Due to the rarity it is often
cut to save weight, most are less than one carat. Larger, higher quality
stones rise in price. Alexandrite has a hardness of 8.5 MOHS compared
to a diamond which is 10.0 MOHS
The Bisanar Company has a very rare natural untreated 97% color change
Alexandrite, this beautiful ring boasts 1.19 carat oval cut Alexandrite
surrounded by 0.76 carat of diamonds set in platinum. This is a must see
stop by Bisanar Jewelers and view this one of a kind ring.
