Volcanic islands, such as those in Hawaii and the Caribbean, are often fringed by coral reefs – ring-shaped structures that ...

Gemstones News: White coral stone ... Typically have an oval, barrel or spherical shape on the top along with a flat base4. Are pristine white in color5. Are completely organic in nature6.

gemstone - coral. Corals are therefore classified as “organic gemstones,” with other main gems being pearls and amber. ... weights and shapes of rounds to tubular.

Liberty Hall, circa 1799 Per Betsy: “ Coral stone lent itself to being “ dressed,” carved, trimmed and shaped into decorative moldings, quoins, and cornices.

A Florida State University ecology and evolutionary biologist has discovered that the reproductive methods of individual ...

Shape-shifting corals: Molecular markers show morphology is evolutionarily plastic in Porites Zac H Forsman, Daniel J Barshis, Cynthia L Hunter and Robert J Toonen BMC Evolutionary Biology (in press) ...

A Michigan rock hunter pulled a 93-pound fossilized coral stone out of Lake Michigan on Tuesday. When Tim O'Brien of Copemish, Mich., spotted the massive Petoskey stone a week ago, it was buried ...

Coral reef map takes shape. Nearly one-third of the coral reef in Abu Dhabi has been identified and mapped in a detailed study being conducted by a prominent environmental organisation.