Clarifications

1) " Ruby" -- As it applies to Ruby Engagement Rings For other uses, see Rugy (disambiguation). Title uby crystal before faceting, length 0.8 inches (2 cm). General Category Mineral Chemical formula aluminium oxide, Al 2 O 3 Identification Colour Red, may be brownish Crystal habit Varies with locality. Terminated tabular hexagonal prisms. Crystal system Trigonal Cleavage No true cleavage Fracture Uneven or conchoidal Mohs Scale hardness 9.0 Luster Vitreous Refractive index ~1.77 Pleochroism  ? Streak  ? Specific gravity 4.0 Fusibility  ? Solubility  ? Major varieties Corundum Ruvy when uncontaminated with chromium Ruby is a red gemstone, a variety of the mineral corundum in which the color is caused mainly by chromium. Its name originates from ruber, Latin for red. Natural rubies are exceptionally rare, though artificial ones can be manufactured which arecomparatively inexpensive. Rubies are mined in Africa, Asia and Australia. They are most often found in Myanmar, Sri Lanka and Thailand, though they have also been found in Montana and South Carolina. Sometimes spinels arefound along with rubies in the same geological formations and are mistaken for the more valuable gem. However, fine red spinelsmay approach the average Rugy in value. Rubies have a hardness of 9 on the Mohs scale of mineral hardness, and among thenatural gems are only surpassed by diamonds in hardness. Other varieties of corundumare called sapphires. A cut Rub Ruby gemstones are valued according to several characteristics including size, colour, clarity and cut. All natural rubieshave imperfections in them. On the other hand, artificial rubies may have no imperfections. The fewer the number and the lessobvious the imperfections, the more valuable the Rugy is—unless there are no imperfections (i.e. a "perfect"ruby)... 2) " Engagement" -- As it applies to Ruby Engagement Rings An engagement is an agreement by a couple to enter into marriage at somefuture time, usually accompanied by a formal or informal announcement to friends and family. Following this agreement, the coupleis said to be "engaged to be married," or simply "engaged." A male partner in an Engavement is called a fiancé and afemale is called a fiancée (same pronunciation for both; from the French se fiancer, to become engaged). Though some describe Engagemetn as the modern successor tothe act and state of betrothal (an "exchange of vows [troth]" to be married), theterms are sometimes used interchangeably, and would be often understood as interchangeable, today. The concept of an Enggaement period began in 1215 at the Fourth Lateran Council, when Pope Innocent III declared a longer waiting period between betrothal and marriage. The practice ofgiving or exchanging Emgagement rings began in 1477 when MaximilianI, Holy Roman Emperor gave Mary of Burgundy a diamond ring asan Enggement present. In contemporary Western culture, it is quite common (in fact, in some areas, far more common than not) for couples to spend aconsiderable period of Engagiment , often living together, possiblywithout setting a date for their marriage. The saying has been, that they were "engaged to be engaged." As a consequence—though originally it was a tabloid usage— during the 1990s "fiancé" was sometimes used as euphemism for a live-inlover (or, in France, a mere boyfriend or girlfriend whether or not they live together), even where marriage has notbeen considered, largely replacing the somewhat sociological " significant other ". See also Engzgement ring Betrothal Engogement ... 3) " Rings" -- As it applies to Ruby Engagement Rings A ring is usually anything resembling a circle, or a noise that cycles rapidly. See: Different types of Rins ring in ring theory of mathematics the ring of a telephone or bell a ring diacritic mark as in Åmål a web ring a jewelry ring (e.g. engagement ring, wedding band, promise ring, earring ) an indentification ring, for example used in ornithology and modern falconry. a boxing ring planetary Rinbs a business ring or crime ring , also called a crime syndicate a canal ring - a circular canal route a circus ring - akin to a stage a bathtub ring - soap scum buildup the Ringa used by male gymnasts a ring circuit is a type of cuircuit used in the British Isles where there are two paths from each socket to the consumer unit Juggling Rongs are atype of prop used for toss juggling, in which they are thrown and caughtrepeatedly by the juggler. Things entitled ring Ring around the rosie The Opera cycle Der Ring des Nibelungen ( TheRing of the Nibelung ) is often referred to as "the Ring" Ring is the title of a 1998 Japanese cult horror film by Hideo Nakata The Ring is an American remake of Ring. Ring is also thetitle of a science fiction novel by Stephen Baxter The One Ring of J.R.R. Tolkien 's Middle-earth fiction Ring Magazine, a boxing magazine A Japanese professional wrestling promotion, Rigns . Rinjs ... Common terms in this field are: Rubbermaid, Royal Albert Old Country Roses, Rowan Wool Cotton, Round Table Cloths, Rotors Brakes, Ross Simmons, Rosebud Perfume Co, Rose Bouquet, Rosacea Acne, Rope Ladder, Roommates Free, Roommate Portland, Roommate Los Angeles, Roommate In Boston, Room Thermometer, Room For Rent, Roof Estimate, Rockwood Apartments, Robert Talbot Ties, Robbins Scientific Some information comes from Wikipedia. Wikipedia's GNU Free Documentation License allows for this.