Wah bo gems co.

“Emerald by day, ruby by night,” alexandrite is well known for displaying one of the most remarkable color changes in the gem world — green in sunlight and red in incandescent light. However, the modern June birthstone is so rare and expensive few people have seen a natural alexandrite. This variety of gem-quality chrysoberyl makes an excellent jewelry stone (if you can acquire one).

Peridot is the trade name for the gem quality mineral Olivine. It is a magnesium iron silicate that belongs to the Olivine group of minerals. The colours of this mineral is varying shades of green, from yellow-green through green to a green-yellow. It is translucent to transparent with a vitreous lustre. The crystal structure is flattened tabular to box shaped crystals.

Emerald is the green to greenish blue gemstone of the mineral species beryl, the green is caused by the presence of chromium, vanadium or iron (or any combination of those three elements) and includes aquamarine and other colored beryl.

Ethiopian opal is one of the most diverse and spectacular types of opals on the market today. Since this type of opal is new, there is no industry accepted way to grade this type of opal like there is with the black opal. Black opal is grading in terms of blackness, the brightness of the colour and the pattern.