[DOC] [TLE] Types of Gemstone - Diamonds-n-Gold Direct [PAR] For example, diamonds have always been considered as precious stones, yet 
there ... The name of this remarkable gemstone comes from Greek 'Smaragdos', 
meaning 'Green Stone'. ... The red color of the ruby is incomparable: warm and 
fiery. .... Opal, Milk or Crystal Opal, Boulder Opal, Opal Matrix, Mexican and Fire 
Opal. [DOC] [TLE] Fire Opal Gemstone Information - GemSelect [PAR] Sep 11, 2006 ... Fire Opal is an unusual variety of opal from Mexico, with colors ... Darker 
brownish fire opal will typically exhibit more play of color than fiery golden 
colored varieties. ... saturated orange and orange-red stones are especially 
valuable. ... There are many varieties of opal available that can be classified as... [DOC] [TLE] Fire Opal - International Colored Gemstone [PAR] until, in or around the year 1835, the fiery treasures hidden in the Mexican 
highlands ... Their warm, expressive orange comes in all varieties from yellow to 
light red, ... Indeed, when the raw stones are found, many fire opals are covered 
in a... [DOC] [TLE] Gemstone and Jewelry Glossary and Terms - Jewelry Television [PAR] Rainbow andradite, a rare and exotic variety only found in Japan and Mexico, 
exhibits an ... Often referred to as aqua, this gemstone has been prized for many 
centuries. ... Beryls come in a wide variety of colors including greens (emerald), 
blues ... is a medium slightly yellowish-green stone speckled with orangy red 
spots. [DOC] [TLE] Red Gemstones - Semi Precious Stones Guide [PAR] Red gemstones - A list and description of various kinds of red gemstones. ... kind 
of red gemstone, there are actually a few kinds of red semi precious stones ... The 
name Pyrope comes from the Greek for 'Fiery Eyes'. ... The main source of Fire 
Opals is Mexico, and gemstones from there are often called Mexican Fire Opals. [DOC] [TLE] Opal - Wikipedia [PAR] Opal is a hydrated amorphous form of silica its water content may range from 3 to 
21% by ... Precious opal ranges from clear through white, gray, red, orange, 
yellow, green ... Besides the gemstone varieties that show a play of color, the 
other kinds of ... The most famous source of fire opals is the state of Quertaro in 
Mexico;... [DOC] [TLE] Opal Value, Price, and Jewelry - International Gem Society [PAR] (They have been considered both the luckiest and unluckiest gems to own). .... 
Density, 1.99-2.25; orangered variety ~2.00; black and white opal, 2.10; green 
opal, 2.12. .... These stones are also called Mexican or sun opals. ... These opals 
come in many colors and show dazzling fire, backed by their brown ironstone... [DOC] [TLE] NOVA - Official Website | A Primer of Gemstones - PBS [PAR] Feb 1, 2000 ... Amethyst is a transparent variety of quartz that contains trace amounts of iron, .... 
Geographic Origins: Australia (white and black opal), Mexico (fire and water opal)
, ... the organic product of oysters, it is considered by many to be a precious gem, 
and ... The red pigment comes from the element chromium. [DOC] [TLE] Fire Opal - Pictures of Fire Opal - Geology.com [PAR] Fire Opal: These three stones show the color range of "fire opal," a name ... The 
defining characteristic of fire opal is the fiery hue of yellow, orange or red that ... 
This is an 8 x 10 millimeter oval cut from material mined in Mexico. ... Many 
people call a red fire opal like this one a "cherry opal" because of its color. ... 100
+ Gems. [DOC] [TLE] Fire Opal Gemstone Library | Information & Attributes [PAR] Historical data & facts about Fire Opal jewelry stones. ... There are many other 
countries which have deposits of this fiery orange-red .... red-orange fire; these 
types of fire opals are the ones that come from Mexico, ... which is most suitable 
for cutting into cabochons, which is considered to be the standard cut for

Question: Many of the red stones are classified as the "fire" variety of this fiery gem come from Mexico
Answer: opals