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2. Doublet (lapidary) - Wikipedia

   en.wikipedia.org/wiki/Doublet_(lapidary)

   A doublet is a type of assembled gem composed in two sections. [1] It is sometimes used to imitate other, more expensive gems. Opal Doublet. A garnet and glass doublet uses a top portion of natural garnet fused to any color of glass to imitate a gem. The color of glass used in the doublet is all that is seen, as the garnet provides no color.

3. Opal - Wikipedia

   en.wikipedia.org/wiki/Opal

   Opals too thin to produce a "natural" opal may be combined with other materials to form "composite" gems. An opal doublet consists of a relatively thin layer of precious opal, backed by a layer of dark-colored material, most commonly ironstone, dark or black common opal (potch), onyx, or obsidian. The darker backing emphasizes the play of color ...

4. Mineraloid - Wikipedia

   en.wikipedia.org/wiki/Mineraloid

   A mineraloid is a naturally occurring substance that resembles a mineral, but does not demonstrate the crystallinity of a mineral. Mineraloid substances possess chemical compositions that vary beyond the generally accepted ranges for specific minerals, for example, obsidian is an amorphous glass and not a true crystal; lignite is derived from the decay of wood under extreme pressure ...

5. World's most expensive opal literally glows in the dark - AOL

   www.aol.com/news/2015-08-13-world-s-most...

   Meet the "Virgin Rainbow" – perhaps the finest and certainly the most expensive opal on record. It literally glows in the dark. In fact, as it gets darker around the opal, the opal appears ...

6. Ammolite - Wikipedia

   en.wikipedia.org/wiki/Ammolite

   Ammolite is an opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America.It is commonly unearthed by natural erosion or through the process of various mining practices, within the perimeter of an ancient sea bed called the Western Interior Seaway. [2]

7. NFL Week 10 injury report: Live updates on active, inactive ...

   www.aol.com/nfl-week-10-injury-report-123057438.html

   With four teams on a bye for Week 10, Sunday's slate of games will be slightly thinner than usual.However, that doesn't mean this week is devoid of exciting matchups. Fans can look forward to 12 ...

8. Slocum stone - Wikipedia

   en.wikipedia.org/wiki/Slocum_stone

   Slocum stone (sometimes sold as "Slocum opal") is an early opal simulant which was briefly popular prior to the introduction of synthetics and less expensive simulants. [1] It was named after its inventor, John L. Slocum (1920–1998) [2] of Rochester, Michigan. [3] John Slocum experimented during the 1960s with various methods.

9. College Football Playoff rankings: Ohio State slips, Miami ...

   www.aol.com/college-football-playoff-rankings...

   Peach Bowl: No. 3 SMU vs. Alabama-Notre Dame winner. Sugar Bowl: No. 2 Texas vs. Indiana-Georgia winner. Rose Bowl: No. 1 Oregon vs. Ohio State-Tennessee winner. College Football Playoff rankings ...