Fine, short "silk" (rutile needles) are common, though often less dense than those found in Mogok specimens.
While many Mozambican rubies are of sufficient quality to remain , a significant portion of the production undergoes standard heat treatment to improve clarity and dissolve rutile silk. Low-temperature heating is also common to subtly shift purplish overtones toward a more desirable pure red. Due to the high volume of production, ethical sourcing and blockchain-tracked "mine-to-market" documentation have become hallmarks of the Montepuez supply chain. Gemmological Profile Mozambican Ruby
The primary allure of the Mozambican ruby lies in its exceptional transparency and versatile color range. Fine, short "silk" (rutile needles) are common, though