Diamond Colors

Diamonds occur in a variety of colors — steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black, virtually in every color of the rainbow. Colored diamonds contain interstitial impurities or structural defects that cause the coloration, whilst pure diamonds are perfectly transparent and colorless.A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or color. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense pink or blue diamonds can be dramatically more valuable. Out of all colored diamonds, red diamonds are the rarest. The Aurora Pyramid of Hope displays a spectacular array of naturally colored diamonds, including red diamonds. Diamonds occur in a variety of colors — steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black, virtually in every color of the rainbow. Colored diamonds contain interstitial impurities or structural defects that cause the coloration, whilst pure diamonds are perfectly transparent and colorless. Diamonds are of two main types and several subtypes, according to the nature of impurities present and how these impurities affect light absorption. Type I diamonds have nitrogen atoms as the main impurity, commonly at a concentration of 0.1%. If the nitrogen atoms are in pairs, they do not affect the diamond's color; these are Type IaA. If the nitrogen atoms are in large even-numbered aggregates, they impart a yellow to brown tint. About 98% of gem diamonds are type Ia, and most of these are a mixture of IaA and IaB material: these diamonds belong to the Cape series. If the nitrogen atoms are dispersed throughout the crystal in isolated sites, they give the stone an intense yellow or occasionally brown tint of Type Ib; the rare canary diamonds belong to this type, which represents only 0.1% of known natural diamonds. Synthetic diamond containing nitrogen is Type Ib. Type I diamonds absorb in both the infrared and ultraviolet region. They also have a characteristic fluorescence and visible absorption spectrum. Type II diamonds have no measurable nitrogen impurities. Type II diamonds absorb in a different region of the infrared, and transmit in the ultraviolet below 225 NMI. They also have differing fluorescence characteristics, but no discernible visible absorption spectrum. Type IIa diamond can be colored pink, red, or brown due to structural anomalies arising through plastic deformation during crystal growth—these diamonds are rare, but constitute a large percentage of Australian production. Type IIb diamonds, which account for 0.1% of gem diamonds, are usually light blue due to scattered boron within the crystal matrix; these diamonds are also semiconductors, unlike other diamond types. However, a blue-grey color may also occur in Type Ia diamonds and be unrelated to boron. Also not restricted to type are green diamonds, whose color is from exposure to varying quantities of radiation.

Casino Keno

Playing Keno

Keno is usually played in Casino lounges specifically allocated for the game, but there are so called 'Keno runners' who will collect your ticket and deliver the winnings if the player wants to play from outside the lounge area. There are many television monitors spread all over the Casino halls to keep players informed of the winning numbers.
There is also the video version of Keno. These are slots-like coin operated machines. It plays using the same principle with similar rules of the regular Keno, but you get the results much faster.
To play Keno, you select a minimum of 4 but no more than 10 numbers between 1 and 80. Each selection is called a 'Spot', so if you select 10 numbers you are playing a 10 Spot game.
Keno tickets are located at tables throughout the Casino and in the Casino's Keno lounge. The Casino provides a 'Keno crayon' for this purpose.

Simply mark a blank Keno ticket with the numbers of your selection. Then present your ticket to the Keno desk with your wager and the clerk will give you a duplicate ticket. In a few minutes, twenty numbered Keno balls will be drawn at random from a barrel containing 80 numbered balls, and if enough of your selected numbers are drawn, you are a winner. The results are displayed on screens, called Keno boards, throughout the Casino.
Minimum bets can be as low as 5 cents, although some Casinos only accept bets of $1 or more. The house's Keno brochures give you information about payoffs and various tickets you can play.
The amount of money you win is dependent upon the type of ticket you play and the number of 'spots' caught. You may play as many tickets as you wish. You could win as much as $50,000 on a $1 wager in some Casinos.

The round of a Keno game is called a Keno race. In many Casinos, 'multi-race' Keno is featured, where you can play a number of consecutive Keno races at one time.
The house advantage on Keno varies according to the Keno game played. It is always around 30% or more.

Online casinos, also known as virtual casinos or Internet casinos are online versions of traditional brick and mortar casinos. Online casinos enable gamblers to play and wager on casino games through the Internet.

Online casinos generally offer odds and payback percentages that are comparable to land-based casinos. Some online casinos claim higher payback percentages for slot machine games, and some publish payout percentage audits on their websites. Assuming that the online casino is using an appropriately programmed random number generator, table games like blackjack have an established house edge. The payout percentage for these games is established by the rules of the game.

Online casinos can be divided into two groups based on their interface: web-based and download-only casinos. Some casinos offer both interfaces.

Some casinos offer 'Live gaming', either exclusively, or as part of a wider online casino offering. In live online casinos, popular casino games such as roulette and blackjack are dealt by real dealers in casino studios, in an attempt to convey more of the atmosphere of a physical casino. Player actions including chat such as 'hit' in the game of blackjack may be transmitted to the dealer; in some online casinos more than one player may 'sit' at a particular 'seat' on the table, and in this case there is no interactivity between player and dealer. The question of which player s requested the extra card that the dealer dealt and which chose to 'stand' will be handled by the software. It is usual for players to be able to observe a video feed of the action, and equally common for players to opt to turn it off, if they lack the bandwidth - as the cards are read by OCR and other technology, the video feed is only ever a visual cue.

Web-based online casinos

Web-based online casinos are websites where users may play casino games without downloading software to the local computer. Games are mainly represented in the browser plug-ins Macromedia Flash, Macromedia Shockwave, or Java and require browser support for these plug-in. In addition, bandwidth is needed since all graphics, sounds and animations are loaded through the web via the plug-in. Some online casinos also allow game play through a plain HTML interface. Apple devices such as IPod, IPad and IPhone cannot play Flash games as the technology is not supported.

Download-based online casinos

Download-based online casinos require the download of the software client in order to play and wager on the casino games offered. The online casino software connects to the casino service provider and handles contact without browser support. Download-based online casinos generally run faster than web-based online casinos since the graphics and sound programs are located within the software client, rather than having to be loaded from the Internet. On the other hand, the initial download and installation of a download-based online casino client does take time. As with any download from the Internet, the risk of the program containing malware does exist. Still the graphics and sounds at download-based online casinos are most of the time much better than those at web-based online casinos.

Bastra

Bastra, the Greek deformation of the Arabic word Basra, which is also a similar game played in Egypt, Lebanon and other Middle-Eastern countries, is a popular fishing card game similar to Cassino very popular in Cyprus.

The game was probably introduced to the Cypriots through the Turks during the Ottoman occupation. There are also variations of the game played in Greece, such as Diloti and Kseri. The game has been exported by both the Cypriot and Turkish diasporas and is played in Cypriot communities in Australia, Canada, England and the United States, usually passed on by the first generation of immigrants to their children and grandchildren. Despite this, the game is virtually unknown in these countries outside of the Cypriot and Greek communities. In Turkey the game is still very popular.

The game is played with a 52 card deck and can involve two, three or four players, although the game is most interesting in the two or four player versions. In the four player version, the players can play for themselves or in two player teams. The first team or player to score 100 points is the winner.
The play

The dealer starts by dealing 1 card to each player, starting with the player on the dealer's left, until each player has 4 cards. The dealer then places 4 cards in the middle of the table, called the board. If 1 or more of the 4 cards is a jack, the dealer returns the jacks to the bottom of the deck and replaces it or them with the next cards from the top of the deck. The play begins with the player to the dealer’s left until all cards are played out. The players either collect fish cards from the board or add a card to the board if they cannot fish any cards. After the cards are exhausted, the dealer then deals each player 4 more cards from the remaining deck. The dealer, however, does not deal 4 cards onto the board as done for the opening hand. The hands are played out until there are no remaining cards to be dealt.

In the two player version, each round has six hands, in the three player version, each round has four hands, and in the four player version, each round consists of three hands.
Scoring

The scoring is as follows:

    The aces, which have a numeral value of 1, are worth 1 point each.
    The jacks are worth 1 point each.
    The two of clubs is worth 2 points.
    The ten of diamonds is worth 3 points.
    The player or team that collects the most cards in a given hand receives 3 points. In the event of a tie, each player or team receives 3 points.
    The player or team that collects all the cards in play without benefit of a jack receives 10 points, or a bastra.

Collecting cards

The object of the game is to collect total cards and cards that are worth various points. Cards are collected as follows:

    Pairing: Any card may be used to take another card or cards of the same denomination, i.e. a 7 takes a 7, a king takes a king, a 6 takes two 6s, etc.
    Combining: Multiple cards may be collected through adding the numeral value of the cards together. For example, the board shows 2, an ace, 5 and 4. A player with a 3 could take 2 and the ace 2+1=3, or a player holding a 9 could take 5 and 4 5+4=9, or a player holding a 7 could take 2, the ace and 4 2+1+4=7.
        A player may also collect combinations of the same sum. For example, if the board shows 5, 4, 2 and 7, a 9 would take all 4 cards, i.e. 5+4 and 2+7=9.
    Pairing and combining: Taking cards through pairing and combining can occur on the same play. For example, if the board showed 3 6 5 4 and 9, a 9 would take all the cards, i.e. 3+6 and 5+4=9, plus the 9 would be paired with the 9.

On the last hand, there are often uncollected cards left on the board. These cards are awarded to the last player or team to collect a card.
Jack

The jack is the most powerful card because it can collect all the cards on the board. However, if a jack is played onto an empty board, it is lost and remains in play until one of the players can collect it, usually with another jack.

The bastra is the most important scoring play of the game since it is worth 10 points. A bastra occurs when a player succeeds in clearing the board without benefit of a jack. For example, if the board shows just a 7 and a player collects it with another 7, that player or team receives 10 points. In another scenario, if the board shows 3 and 2 and a player collects them with a 5, that player or team also receives 10 points. In the rare event that a jack takes a solitary jack, a 50 point bastra is awarded.

The players place the collected cards close to their position at the table. To record bastras, the player places the bastra card face up, sticking out of the player's pile of collected cards. The dealer should be careful to place his or her collected cards away from the deck, so as to avoid confusion. Players are not allowed to look at their collected cards until the end of the hand. At the end of the hand, the players count their total cards and points.

The game ends when one player or team reaches 100 points. In the rare event of a tie 2 players or teams finish even beyond the 100 point mark there are various tie-breaking options, determined by the players by mutual consent. The game can be declared a draw, or an extra hand or hands can be played until the tie is broken. Or the players can extend the game to a fixed number of points 20, 30 or 50.