may be around 1 inch diameter size. 60 grams
price of yellow sapphire stone in the market is 1,000/- per carat to 50,000/ per carat
important is colour-price is about from 3000 up to 30000usd for 10ct sapphire
Three carat diamonds weigh three carats: that's how 'big' they are.
Carat is a weight, so its weight is one tenth of a carat or one tenth of .20 grams.
as small or big as you need or can afford.
If you mean 1/4 carat, that is one quarter of a carat or 25 points (one carat = 100 points) .
The cost of a sapphire engagement ring depends on a number of factors; namely the cut, weight, clarity, color and carat. All these factors have a grading system as well, which determines the price of the diamonds. Other factors include the cost of manufacturing as well. The cost ranges from $10,000 to $25,000.
A Marquis sapphire refers to a specific cut of sapphire gemstone that is elongated with pointed ends resembling an elliptical shape. This cut maximizes the carat weight of the stone while enhancing the appearance of its brilliance and color.
Any were from US$ 1 to US$ 5000 and more depending upon the colour, size and clarity. The cost of sapphire gems varies depending on their color, clarity, size, cut, and overall quality. As of 2000, the cost of 1 carat (0.2 g) of a typical uncut, gem quality sapphire was about $1,600 USD. Significant sapphire deposits are found in Eastern Australia, Southeast Asia, and Sri Lanka. Sapphire and rubies are often found together in the same area, but one gem is usually more abundant.
A 4 carat diamond ring would be ridiculously expensive. In the $100K mark I would expect. If someone is showing you their 4 carat engagement ring, it is probably cubic zirconia.
a carat (abbreviated "ct.") and spelled with a "c" is a measure of weight used for gemstones. One carat is equal to 1/5 of a gram (200 milligrams). Stones are measured to the nearest hundredth of a carat. A hundredth of a carat is also called a point. Thus a 0.10 carat stone can be called either 10 points, or 1/10 of a carat. Small stones like 0.05, and 0.10 ct are most often referred to by point designations. A one carat round diamond of average proportions is approximately 6.5mm in diameter. Note that this relationship of weight and size is different for each family of stones. For example ruby and sapphire are both heavier than diamond (technically, they have a higher specific gravity, so a 1 carat ruby or sapphire is smaller in size than a on carat diamond. Note that karat with a "K" is a measure of the purity of a gold alloy.