Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to determine if a sapphire is real [title] Look for flaws and inclusions. [step] Use a jeweler's magnifying glass, at least 10x magnification, to inspect the sapphire closely. Natural sapphires form with tiny bits of other matter in them, so look for small specks and blemishes.

Ending1: These flaws are a good indication that a sapphire is real. [substeps] Lab-created (fake) sapphires do not have inclusions of this nature, and some natural sapphires don't have flaws either, but if you find flaws it is real. Ending2: [title] Examine the gem regularly for blemishes or inconsistencies. [step] There may be special protrusions or blemishes that help to differentiate an authentic sapphire from an imitation. Ending3: Larger blemishes will help the gem to have a more realistic appearance. It can also cause the gemstone to be difficult to detect. Ending4: If your sapphire has any blemishes, imperfections, protrusions, or flaws, it's a fake sapphire. [substeps] Real sapphires can have no lumps, cracks, flakes, or inclusions.

Answer format: ending1/ending2/ending3/ending4