Alexandrite Quality Factors - GIA
Fine alexandrite is green to bluish green in daylight and red to purplish red in incandescent light. Its color saturation is moderately strong to strong. Stones that are too light do not reach the quality of color intensity seen in fine-quality gems. Stones …
Your In-Depth Guide To 7 Alexandrite Colours - BIRON® Gems
Alexandrite colour change is the stone’s marvellous ability to appear to change hue under different light sources. Under candlelight or incandescent light, alexandrite appears red, pink, or purple. Under sunlight, alexandrite appears green or blue.
Alexandrite: Rare Color-Changing Gemstone - Geology In
Alexandrite is a rare and beautiful gemstone known for its stunning color change. It appears emerald green in daylight and reddish-purple under incandescent light. This dramatic shift in color is called the alexandrite effect. Alexandrite is a variety of the mineral chrysoberyl.
7 Carat Alexandrite (Round, Dark Green, 11 x 11 mm) - Gem …
See how 7 carat Alexandrite (round shape, dark green color) would look on your finger. Dimensions: 11x11 mm, face-up size: 95.03 mm².
Alexandrite Value, Price, and Jewelry Information
This oval cabochon alexandrite shows both exceptional color change and a sharp cat's eye across its entire surface. The dark blue-green to purple color change covers about 80-85% of the gem.
Alexandrite gemstone: Origins, Types, and Value
2024年10月7日 · Its unique color-shifting ability—changing from green or blue in daylight to red or purple under incandescent light—has made this gemstone, which was found in the Ural Mountains of Russia in the 1830s, one of the most prized in the world.
Is My Alexandrite Just A Color-Change Chrysoberyl?
A classic alexandrite color change: Green in daylight to slightly purple Red in incandescent light. Russia, ~ 6 carats. Sources of Color-Change Chrysoberyl. Historically, fine-grade alexandrite originated from the Ural Mountains in Russia.
Alexandrite Stone Guide | Alexandrite Meaning, Hardness & Price
Alexandrite, a rare and fascinating gemstone, was first discovered in the Ural Mountains of Russia in 1830. It belongs to the chrysoberyl family and is known for a unique ability: it can appear green under daylight or fluorescent lighting and transform into a purplish-red hue in incandescent light.
Alexandrite Color Change Explained - Rare Gem Collection
2024年6月25日 · Under the clear, natural daylight, Alexandrite exhibits a green to bluish-green hue. This color change is due to the absorption of dark blue and yellow light by chromium ions within the stone. The intensity of this color change in natural daylight typically ranges from moderate to strong in saturation, depending on the quality of the stone.
What is Alexandrite? Learn about this rare, color-changing gem
2024年11月14日 · First discovered in Europe and Asia in 1830, alexandrite is a rare form of chrysoberyl, a greenish or yellowish-green mineral consisting of an oxide of the elements beryllium and aluminum. When formed with trace amounts …