Ukrainian amber (Rovno amber)

Ukrainian amber and also can be called Rovno amber has been mined at the Klesov, Dubrovitsa and Vladimirets deposits in the Rovno region. It is belong to the succinite type fossil resin but contain more sulfur than ordinary Baltic amber. Baltic amber and Ukrainian amber thought to be similar things but recently fauna record found in the Ukrainian amber different from the Baltic amber inclusions. The amber seems not have long journey tumbled evidence and proof that this amber is probably formed in-situ or nearby area. It was dated only slightly younger than Baltic amber but still in Eocene, 40 million years old.
Remember Ukraine have many other types of amber for example, delatynite, shraufite and others retinites.

Succinite from the Baltic Sea

Baltic Amber is the largest amber deposit in the world. Its generally occurs on the Northern Europe in the Baltic region. This amber existed since Eocene.
Most were accumulated at Sambian region of Kaliningrad, Lithuania and the Poland. The amber found between the Blue Earth strata and the Wild Earth Strata, which is estimated between 44 to 47 million years old. It is also called succinite because contain 3-8% of succinic acid. Another succinite found on the Northern Jutland of Denmark which is much older, 50 million years old. Succinite also found as far as the Rovno region of Ukraine, 40 million years old. All succinite are almost identical chemically and their appearance also the same. Because the difficulties of finding the exact age, succinite is dated as 40-50 million years old.

Polished succinite from Saeby, North Jutland, Denmark

Polished and raw succinite from Kaliningrad, Russia

Amber

Amber (or, technically, fossil resin) is fossilized tree resin, which has been appreciated for its color and natural beauty since Neolithic times. Good quality amber is used for the manufacture of ornamental objects and jewelry. There are five classes of amber, defined on the basis of their chemical constituents.
Because it originates as a soft, sticky tree resin, amber sometimes includes animal and plant material as inclusions.

APPEARANCE
Amber occurs in range of colors. Baltic Amber is the best material for the jewelry. It have various range of yellow tone, from butterscotch vivid yellow to the transparent golden yellow. Red, orange and brown varieties also occurs. Pure opaque white and the pure solid blue were being found. It is extremely rare and most of the pieces occurs with the ugly botanical inclusion. If the blue Baltic amber were pure clean blue so it will look like gem-quality turquoise.
Other amber or fossil resin shows more exotic colors, such as cognac, red, black, brown, or even mixed with other colors. Some amber strongly fluoresces blue or green under the natural sunlight, the most vivid blue found only on Dominican amber and green on the Chiapas amber. Cantabrian amber, Burmite, some Rumanite, Australian (Cape York) amber etc were also exhibit strong blue fluorescent. A few of Borneo Amber, Arkansas Amber and Indonesian Amber were also fluoresce green but not always.

Blue Burmese Amber (Burmite)

Blue green Chiapas Amber

Much of the most highly-prized amber is transparent, in contrast to the very common cloudy amber and opaque amber. Opaque amber contains numerous minute bubbles. This kind of amber is known as "bony amber".