The weight of a 1.5-carat diamond ring is 0.3 grams, and the international unit of measurement for diamond weight is "carat". 1 carat=200 milligrams=0.2 grams, so 1.5 carats is 0.3 grams. Its size may vary depending on the diamond setting and shape. Taking a 1.5-carat standard round diamond as an example, its diameter is 7.4mm and its height is 4.5mm.
How to choose a 1.5-carat diamond ring
1. Color
The larger the diamond, the more color it appears. Diamonds over 1 carat have high color requirements, so it is best to choose D, E, or F grades. If the budget is limited, you can also choose G or H grades, preferably not lower than H.
2. Clarity
Under a 10x magnifying glass, diamond clarity can be divided into five major levels: IF, VVS, VS, SI, and I. Among them, IF, VVS, and VS levels cannot be observed by the naked eye for defects, while SI and I levels will have more obvious defects. Therefore, it is recommended to choose diamond rings with SI1 level or above.
3. Cutting off
Diamond cutting directly affects the quality of the fire color, so it is recommended to choose 3EX level, which is the highest level of diamond cutting. If the budget is insufficient, at least VG should be chosen.
4. Fluorescence
Non fluorescent diamonds are the best, but if fluorescent diamonds are acceptable, they can also be relaxed to "weak fluorescence, medium fluorescence" at a lower price.