Peridot belongs to the forsterite-fayalite mineral series which is part of the olivine group. It is one of the idiochromatic gems, meaning its color comes from the basic chemical composition of the mineral itself, not from minor impurities, and therefore will only be found in shades of green. In fact peridot is one of the few semi-precious gemstones found in only one color.
They have highly sensitive blood tests that can detect the pregnancy hormone (hCG) a few days earlier around day 3 to 4 after implantation. Again, some women have had positive urine tests as early as 2 to 3 days after implantation and others have had to wait up to a few weeks.
Well if you had implantation bleeding, you usually will be able to test in about 4 or 5 days after that. If you have taken a pregnancy test already and it is negative, and then you take another one that is positive, your conception date would be about two weeks ago.mplantation bleeding does not occur with every woman. Usually only about 30% of women will experience implantation bleeding. You will usually see implantation bleeding 4 to 7 days before your period is due if you are one of the 30%.