Myanmar Mogo Ruby. The gems are mostly blood red, rose red and pink. The color is sharp but uneven, and a straight ribbon is often seen. The pleochroism is obvious, and the gems are observed from different directions with the naked eye, and two different colors can be seen. The polycrystalline twin crystals are developed, and the louvered double crystal grains arranged in a straight line can be seen. The cracking often splits along the three sets of polycrystalline twin faces. The gemstones contain the following inclusions to varying degrees: a rutile rutile inclusion; a hexagonal cylindrical spread of a generally fibrous rutile inclusion parallel ruby ​​crystal, forming three sets of meshes with an angle of 60 degrees and 120 degrees, when parallel When the net of this group of bags is cut and honed into a curved gemstone, when the light is shining on the curved surface, a six-shot starlight, that is, a star-shaped ruby, appears. If the fibrous inclusions are irregularly densely packed, they appear as translucent milky white flocculent plaques. Diffuse gas-liquid inclusions: scattered in the gemstones, in which the gas state accounts for a small area, about 30%. If the gas-liquid inclusions are gathered together in a fingerprint-like pattern, they are called fingerprint-like gas-liquid inclusions. Short columnar, granular network inclusions: Ruby often contains mineral inclusions such as spinel, calcite, vermiculite and hematite. The corners of these small minerals are rounded by melting. Sri Lanka ruby. The characteristics of the gemstone are similar to those of the Burmese ruby, but the color is lighter and the brightness is larger. In addition to the characteristics similar to Burmese rubies, the inclusions in the ruby ​​of Sri Lanka contain two unique mineral inclusions: apatite inclusions, hexagonal columns of apatite, rounded corners, appearing as a single crystal or group. The silky rutile inclusions are slender than the rutile rutile inclusions in the Burmese rubies.
Thai sharp bamboo spinning ruby. The gems are brownish red or rose red. The polycrystalline twin crystals develop, and the ribbon and growth lines are straight. There are fewer inclusions, and there are no rutile inclusions in the silk. Common fingerprint-like inclusions.
Tanzania ruby. Ruby is slightly darker due to iron.
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