The first thing we look for in precious stones is their beauty. But beauty is subjective and is very difficult to classify.
One thing I have learned over time is that when loose gemstones are sold, the buyers are often gem collectors, look for their birthstone or they will use the gem to make a custom piece of jewelry; an engagement ring, a wedding ring, or something very special. In which case they are very clear about the color they are looking for.
The way in which I have classified the online store is by species of gems and by varieties, I have realized that sometimes it is not entirely useful since not everyone has to know that emerald or aquamarine are varieties of beryl or that in the tourmaline we can find all the colors that we can imagine, but if it is practical to know that if we look for a green gem we can look for emeralds, tourmaline, sapphires, peridots, etc.
So for all those who are interested in knowing what options you can find when you search for your favorite colors, here is a small list of gemstones organized by color.
Because many gems feature mixtures of two colors, bluish green, orange red, etc., they will be in both categories: in red and orange stones, for example. And there will be a special category for those gems that have color change, asterism, cat's eye, multicolor, etc.
The pure blue color, without other shades or mixture of another color is very rare. We find it inSapphireand rarely inTanzanite, which usually has a more violet and / or greenish color; it happens a little like pure red gems, so these types of gems are valuable.
Rubyis the star stone and the most valuable of the group, followed by Red Spineland Red Tourmaline or Rubellite. Red gems are very RARE and the pure red color without orange, pink, purple or brown hues is very valuable, so these gems are authentic treasures.
Other red gems:Rhodolite Garnet,Pyrope Garnet, Rhodonite, Red Zircon and Red Coral.
These green gems vary in color from a chrome green like that of the Tsavorite garnet to a lime green of the peridot, or more yellowish like that of the chrysoberyl. We can find a wide range of green color within the same variety, as can happen with tourmaline or sapphires. You just have to choose the one you like best.
As a general rule, vivid and saturated colors will always be more expensive than lighter and muted colors. In the case of kunzites, we can find large gems at a good price.
As with blue and red gems, finding precious stones of a pure yellow color, without orange or brown tones, is quite difficult. Many of them have a golden color that includes some orange tone.
The color purple and violet are a mixture of red and blue, the color violet has a more bluish tone and the redder purple. The quintessential purple gem is Amethyst.
There are not many precious stones that have these colors, so there is a small list of gems with these tones:Amethyst,Tanzanite,Spinel,Tourmaline,Sapphire, Chalcedony,Fluorite, Sugilite, Charoita, IoliteandLavender Jadeite are the most recent.
Grey Spinelsare our favorites, the reason: they look wonderful in jewelry, a beautiful grey gem surrounded by a halo of diamonds in a white gold ring has a very luxurious appearance. So the demand for grey gems for engagement rings, cufflinks, etc. is increasing.
The spinels have a metallic grey color that is very difficult to find in other precious stones, although other gems also have this hue, such asTourmaline,Untreated Tanzanite, Grey Moonstone, Tahitian Pearls, Grey Labradorite, Grey Sapphire, Pearl Mother, Grey Chalcedony, Hematite, etc.
Thebrown coloris not highly sought after by buyers, although the bronze color ofImperial Topazis highly desired, as are someCitrinewith brown hues.
Other gems that have brown tones are:BrownTourmaline, Citrine, Smoky Quartz, RutilatedQuartz, Tiger's Eye Quartz,Opals, Brown Moonstones, Brown Scapolite,etc.
As for theblack color, we findBlack Diamonds, Black Tourmaline (Schorl), Black StarSapphires, Jet, Black Diopside with star.
Sometimes gems show more than one color, that is, they are bicolor or even tricolor, as is the caseAmethrin,FluoriteandTourmaline.
Other times they are very pleocroic, like theAndalusite, and they show different colors from different angles. Other gems due to their structural characteristics present a beautiful play of color such asOpal.
More multicolored gems:Ammolite, Multicolor Jasper,Multicolor Tourmaline, Labradorite, Spectrolite, Multicolor Agate, Chrysocolla, etc.
Lo primero que buscamos en las piedras preciosas es subelleza. Pero la belleza es subjetiva y es muy difícil declasificar.
Una cosa que he aprendido con el tiempo es que cuando se venden piedras preciosas sueltas, los compradores suelen ser coleccionistas de gema o bien van a usar la gema para hacerse una pieza de joyería a medida; unanillo de compromiso,de boda, o algo muy especial. En cuyo caso tienen clarísimoel colorque están buscando.
Algunas veces las piedras preciosas de color presentan algunos efectos ópticos muy llamativos.
Esto puede deberse a sus características estructurales, defectos oincluso inclusiones, y estos son los efectos más conocidos que nos podemos encontrar:
Asterismo, Adularescencia, Aventurescencia, Chatoyancy - Efecto ojo de gato, Iridiscencia, Labradorescencia, Juego de Color, Cambio de Color, Opalescencia, Oriente
Some times colored gemstones present some very striking optical effects. This is due to characteristic structures, defects or even inclusions, gems can show different effects such as:
