Dominican amber is produced by a resin called Hymenaea protera (algarrobo). Interestingly, carob trees originally produced these resins to drive away insects and prevent fungi from growing. Unexpectedly, these resins have become the perfect wrappers to preserve insects. Many parts of amber trees can secrete resin, including petals, leaves, fruits, branches and bark. The dotted marks on the petals of amber trees are organs that secrete resin. Amber trees, which can grow to more than 30 meters high, belong to the upper trees in the amber forest and are the main plants that constitute the canopy of the tropical rain forest at that time (the plants in the canopy are generally about 30 meters high, forming the "ceiling" of the tropical rain forest and absorbing most of the sunshine and rain). Because amber tree can penetrate the forest vertically and many parts can secrete resin, it can often wrap and preserve many species in the forest, and also provide us with as many amber fossil samples as possible to restore the lost ancient forest.
The flowering period of carob usually ends before the rainy season (the temperature in tropical rain forest is relatively constant all year round, and it is often divided into rainy season and dry season according to rainfall), which is about 4-6 weeks. When the dry season comes, the flowers of carob trees begin to wither, and their petals will be wrapped in resin when they fly in the forest. They can also be seen in amber, some of which are well preserved, and you can even clearly observe the texture on them. The calyx of carob can also be seen in amber. Amber tree flower * * * has five petals, including three large petals and two degenerated small petals; Ten filaments with pollen sacs on them; Four calyx; In the middle is an ovary. The flowers of carob trees are very big. The most complete amber tree flower seen in amber usually consists of only four sepals and a developing fruit. There are almost no intact flowers, which can only be imagined through various flower devices. The leaves of amber tree are compound leaves, consisting of two simple leaves, with the midvein as the axis and asymmetrical sides. Lanpo is produced in the Dominican Republic and a county town called Chiapas in Mexico. Due to years of guerrilla warfare in Chiapas, Dominica is currently the only producing area of Lampard, which can only be mined artificially. In recent years, the Dominican government has strictly restricted mining and export. In addition, Dominica is a non-diplomatic country in China, and there are few Dominican lanterns in China.
It is speculated that the blue luster of Dominican Lanpo comes from volcanic eruption and other factors. Lanpo will show more than five colors, such as blue, green, Rayna Sue and brown, with the change of light. It is often collected as high-grade jewelry and works of art in European and American markets, while large mines are mostly collected by museums. Lanpo's beautiful optical effect and rarity are enough to establish its amber dominance, and its dream becomes colorful, elegant and noble, just like cool sea water.
Generally, Lanpo can see obvious honey yellow body color on the whole, and the part of the surface facing light is slightly blue. (Even in ordinary light, a few Lanpo are almost blue with purple, and blue with green or sky blue. This blue color is more obvious in sunlight or bright white light, and the blue color will move flexibly with the change of light irradiation angle. If it is placed under a specific fluorescent lamp, it will show bright blue fluorescence with purple or green tones. Dominican Lamper can show purple-blue brilliance under white light. However, the common Polish amber and domestic amber do not have this effect.
The fluorescence reaction of Lanpo is much stronger than that of ordinary amber, whether it is raw material or finished product. Lamper shows bright chalky blue fluorescence at long wavelength, a considerable part of which shows yellow-green tone, and some even show blue-purple, blue-green color. It is speculated that the blue color of blue amber is related to a volatile matter, which absorbs and reflects ultraviolet rays to become blue or green, and has nothing to do with pigment. This reaction is also the most important way to detect Lamper. At present, most of the Lanpo seen on the market are counterfeit products of artificial dyes or other materials. The so-called "blue pearl" referred to by some merchants is actually yellow-red amber, which is only slightly blue under ultraviolet radiation. Such amber is not a blue pearl in the strict sense. Others pretend to be Lanpo with ordinary Lanpo. Blue amber is "blue" because the crystal contains unique hydrocarbons. Amber containing this substance is mainly produced in Dominica and China, and a few amber collected from the east coast of Mexico is blue. This is because Dominican blue amber originated from an ancient leguminous plant named Hymenaea protera, which grows in Dominica and China. This plant has been extinct for a long time. Because of this, other varieties of amber, such as Baltic amber varieties, can't see the blue luster. Thermal polymerization in the sun will produce aromatic polycyclic hydrocarbons. In the process of restoring the ground state, the compound absorbs high-energy ultraviolet photons from sunlight and emits low-energy visible photons. The specific color depends entirely on the absorbance of the fluorophore compound. Recent optical measurement research shows that blue amber produced in Dominica has the strongest fluorescence emission between 430 and 530 nanometers, and even has many phosphorescent characteristics (from the perspective of radiation time, the phosphorescent substance is longer than the fluorescent substance). Dominican blue amber contains aromatic hydrocarbons, which adds an aromatic smell to amber stone, which is particularly irritating when processing and carving blue amber. This is also a major feature of amber varieties.