Depending on the context, 1ct tw could mean one carat total weight, and 1ct TDW could mean one carat total diamond weight.Without a context, it's difficult to give you a better answer.
Where ever you are in the world, a one carat diamond weighs one carat, or .20 grammes.
One can purchase diamond ring jewelry at a local jewelry shop or at an official jewelry website such as Tiffany's. Another option would be to purchase jewelry on Amazon or Ebay.
You can purchase an princess diamond ring from any reputable Jeweller store, from online haberdashery stores such as 'Amazon' or from online auction sites such as 'eBay'.
There are many places to purchase a solitaire diamond ring. It is available at jewelry shops such as Tiffany and Co. and Kay's Jewelers. It is also available on Amazon.
One can purchase a platinum diamond engagement ring at a jewelry store. One should visit a local jeweler and ask about their selection to find the option that fits the buyer's needs.
One can purchase an art deco diamond ring at almost any retail website. Amazon and eBay sell these types of rings on their website for a reasonably low price.
A ring enhancer is used to complement another ring, such as a diamond ring. One can purchase ring enhancers from jewelry stores such as HM Samuel, for example.
There are several places one can buy a yellow diamond ring. Online purchase options include eBay and Amazon. Retailers that offer both online and in store purchase options include Zales and Tiffany & Co.
The initials CT are often used to represent carat in a context referring to the weight of a diamond stone. For example, 1ct diamond means that the diamond stone weighs one carat.
There are many websites that sell estate diamond rings. The best website to purchase from would be Ross Simons. They have a wide range of estate diamond rings at an affordable price.
A Blue Nile diamond can be purchased straight from the Blue Nile website. On Blue Nile, one can get a ring built by selecting the diamond, setting, and metal.