When purchasing a diamond, it's the clarity that counts. The less color involved in the gemstone the more valued.
If by 'you' you mean 'U', and you're query is about clarity and not colour, it is possible that 'U' indicates unenhanced. Unenhanced diamonds are more valuable than enhanced diamonds.
According to Wikipedia, diamonds can be altered by "...clarity treatments such as laser drilling to remove inclusions, application of sealants to fill cracks, color treatments to improve a white diamond's color grade, and treatments to give fancy color to a white or off-color diamond." You can read more about diamond enhancement, below.
Diamonds are graded according to their cut, clarity, carat weight and colour. You can read more about each, below.
No, chocolate diamonds are usually less expensive than regular -- white -- diamonds, given equal cut, clarity and carat weight.
Color is graded on a scale of D to Z, D being colorless, Z being the darkest shade of light yellow attributed to the scale. The closer to D on the scale, the more valuable the diamond. Clarity is rated between Flawless (FL) / Internally Flawless (IF) all the way to three levels of Imperfect I1, I2, and I3. Flawless it the most prized. Pink diamonds are becoming popular in the current market, where yellow diamonds or clear diamonds were once prized. See the Related Link for more extended information about the rating system and value placed on diamonds.
Generally yes, given that both diamonds are equal in carat weight, clarity and excellence of cut.
1 carat can be up to $22,000. Diamonds can be up to $1,000,000 or more. The price varies greatly, and depends mostly on these four specifications: cut, clarity, colour and carat (weight of a jewel).
amethysts are purple in color and diamonds are more clear
Clarity H-I sounds more like the colour grade. Clarity I2-i3 means that there are two or three visible inclusions in the diamond. This is the lowest clarity grade for gem-stone quality diamonds.
Gem-stone quality diamonds are considered especially valuable due to their rarity and their uniqueness. A diamond's value is determined by its 4 Cs, which include a diamond's cut, clarity, color and carat weight. A diamond low on some or all of the 4 Cs will naturally be less valuable than a diamond that is high in clarity, color, cut and carat weight. Seventy-five to eighty percent or more of all mined diamonds, however, are used by industry to enhance cutting and precision tools.
The value of a "chocolate diamond" is determined by several factors, including its carat weight, cut, color, and clarity. The more carats a diamond has, the higher its value. The cut refers to the way the diamond is shaped and faceted, with well-cut diamonds being more valuable. The color of a chocolate diamond, which is a brown variety of diamond, can range from light to deep brown, with darker and more intense colors being more valuable. Lastly, clarity refers to the presence or absence of internal or external flaws, with diamonds that have fewer flaws being more valuable.
Some chocolate diamonds are mined in Australia and comparatively, they cost less than clear diamonds. Diamonds are graded by what is commonly referred to as the three c's. Cut, Colour and Clarity. The better the cut, colour (rather clearer and not included) and clarity the more expensive the diamond will become.