There is no fixed price for such an object.
If you're shopping for the lowest price, you are best advised to shop after-market options, such as consignments, or personal sales. Educate yourself first, to be confident that the price you're paying will get you the best value for your money.
You can buy a round brilliant diamond today on Blue Nile and spend from ~US$3400 to ~US$4200, then pay for the mounting for the stone.
The value of a diamond depends on its cut, colour, carat weight and its clarity.You are most likely to find a diamond of this weight at an auction house, since it is comparatively a large diamond. You can purchase the largest stone for sale today on Blue Nile, a 23.07 carat emerald cut diamond, and pay US$1,900,000+.(Don't confuse 24 karat with 24 carat. Twenty-four karat is a purity measure for gold: it is all gold, pure gold, unmixed with any other metal. Twenty-four carat is the weight of a diamond, which is quite large for a diamond. Regardless of weight, any diamond is all diamond, pure diamond.)
The value of a diamond depends on its cut, colour, carat weight and its clarity.You are most likely to find a diamond of this weight at an auction house, since it is comparatively a large diamond. You can purchase the largest stone for sale today on Blue Nile, a 23.07 carat emerald cut diamond, and pay US$1,900,000+.(Don't confuse 24 karat with 24 carat. Twenty-four karat is a purity measure for gold: it is all gold, pure gold, unmixed with any other metal. Twenty-four carat is the weight of a diamond, which is quite large for a diamond. Regardless of weight, any diamond is all diamond, pure diamond.)
A diamond necklace at Journey can, depending on the carat and cut of the diamond(s), the quality and make of the gold and the actual design, cost anywhere between $400 - $1600.
A simple engagement ring of gold costs anywhere from $200 and up. A high quality one carat diamond engagement ring set in 18k solid gold costs $4,000 or more.
Your question is not clear. Is it referring to Diamond carat or Gold karat. This is because both have different meaning. While, Carat refers to weight of diamond (or gemstones), Karat refers to purity of gold. Check the link.
It will cost between $1000 and $2100.
Zero as 40 carat gold does not exist
Yellow gold would provide the highest contrast value as a background for a 1 carat diamond.
The carat weight of the stones can be measured by a certified gemologist.
The rating is apparently 5 8 carat diamond studs in 14 [K] gold with VVS1 clarity, according to your certificate.
Carat rating refers to the measurement of a diamond's weight. One carat is equal to 200 milligrams or 0.2 grams. It is a significant factor in determining the value and size of a diamond.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.