February 19, 2015
COLORED GEMSTONE CLARITY GRADING
CLARITY: Clarity is the second most important factor in colored gemstones.
The guidelines used for clarity in a diamonds and colored gemstones are different. Colored gemstones have more inclusions than diamonds, are not so neat, and there are certain gemstones that hardly ever appear clean.
MdMaya Gems uses the following clarity scale when grading gemstones.
Sometimes these inclusions are what make stones valuable (silks in rubies, the cat's eye effect in the alexandrite, etc.).
Setting aside translucent and opaque gemstones, the first classification to take into account is:
EYE CLEAN: Appears clean to the unaided eye. (Type 1, 2 and 3)
HEAVILY included: prominent inclusions that have a negative effect on appearance or durability.
SEVERELY INCLUDED: prominent inclusions that have a severe effect on appearance or durability or both. (Type 1, 2 and 3).
A clear example: Whilst in aquamarines the term slightly means that they show really small inclusions that are very difficult for the naked eye to notice (without using a magnifying glass), when talking about emeralds slighty means notable sized inclusions that can be easily seen.
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August 03, 2021
Hablar de Espinelas es hablar de Historia, del nacimiento de la Gemología, de guerras y coronas, pero sobre todo, de una gran piedra preciosa que resurge de las cenizas, cual Ave Fénix, pero en esta ocasión le ha costado más tiempo: DOS SIGLOS.
La Espinela es la piedra natal de Agosto, descubre los diferentes colores que presenta, las más valiosas, tallas más típicas, tamaños, inclusiones, dónde se encuentran, espinelas famosas y muchas cosas más.
August 02, 2021
Spinel Gemstone Buying Guide. Color and Price, Cut and Sizes, Clarity and Typical inclusiones, where is found, August Birthstone, Famous Spinels and more information.Talk about SPINELS is to talk of history, the birth of Gemology, of wars and crowns, but above all, of a great gemstone which is rising from the ashes, like the Phoenix, but on this occasion, it was a long times: TWO CENTURIES.
June 02, 2021
Here you will discover the differences between a cultured pearl vs natural pearl, how pearls are formed, types of pearl, their main characteristics, quality of pearls (nacre pearl, pearl luster, natural pearl colors, pearl size) , varieties of cultured pearls (cultured freshwater pearl and cultured saltwater pearl), history, etymology, etc.
Pearls are a Mother Nature‘s Miracle, rare treasures that come from the seabed and that have been adorning our bodies for millennia.
Pearls are the birthstones that correspond to the month of June.