In addition to good color, beautiful natural gemstones also have a strong reflective ability to visible light. This is called luster. The stronger the reflection ability, the stronger the gloss. The gemstones with bright luster give people bright and dazzling vision, making gemstones more brilliant and shining best friend rings. According to the degree of gloss, the gemstone luster can be divided into the following types:
1. Adamantine luster
Adamas (diamond)-like glare of reflection. Adamas (diamond) is the representative of this type of gloss. In addition to diamonds, cassiterite, zircon (known as rhinestones) and others also have adamantine luster or sub- adamantine luster. Gem personalized necklaces with adamantine luster will be strongly reflect radiant brilliance if processing in certain angle.
2. Vitreous luster
Reflective like glass. The natural gem that has vitreous burnish occupies very big proportion, such as ruby, sapphire, alumoberyl, emerald and other high-grade gemstones custom name necklace. There are also amethyst, citrine, tourmaline, garnet, aquamarine, spinel, olivine and other low-end gemstones also have a glass luster. High-quality ruby and sapphire will also show brilliant light with good processing.
3. Oily luster
This kind of luster is a little dim, like the brightness of grease. Most jade has this luster, such as white jade, jasper, ink jade and jade. The most typical is the white mutton fat jade produced in Xinjiang. Its texture is delicate, soft, smooth and pure. But the gemstones are basically free of grease luster promise rings for her.
4. Silky luster
It shines like a silky strip, which is very beautiful. The reason lies in the fact that the minerals inside are fibrous, and the reflection of light makes them interfere with each other to produce a silk luster yin yang necklace. The most typical one is the tiger eye stone, the woodstone. There’s a cat-eye effect when it is processed properly.
5. Waxy luster
Colloidal gemstones such as agate and opal reflect a waxy luster, and the reflection is soft and slightly dim.
6. Pearly luster
Pearls have this unique sheen, which is typical.
7. Resin luster
The amber was originally formed by resin fossilization. But it still retains a resinous sheen.
Special optical effects
Mainly refers to the unique brightness of the gem. It is different from the color and luster necklaces for girlfriend. Many rubies and sapphires have shiny light clusters, some of which are “curved”, “triangle” or “herringbone” with a reflective layer. Some gems are slightly shiny like cat eyes, but they are quite wide and the edges are not clear. The glossy surface is not flashing and does not have a flexible flashing feel. Some people call it “schiller.”