SCP-001 is a smooth, black, perfectly ellipsoidal (~15.1 cm x 15.4 cm x 16.5 cm) onyx gemstone with a mottled white pattern. Wrapped around its exterior, encompassing its equator and both poles, is a complex and layered fractal filigree of gold metal. The gold is sculpted into broad strokes at what is now usually agreed to be the lower or "south" pole of the object, but with increasing "latitude" the pattern becomes progressively more intricate. Near the "north" pole, also called the "lock" or "singularity", the pattern complexity progresses beyond the capability of optical or electron-beam microscopes to resolve. Further investigation is pending advances in microscopy technology.
The gemstone continuously emits a small quantity (~34.5007 to 34.5010 mW) of thermal radiation in the microwave range. As a result, the gold filigree is warm to the touch. The white mottled areas emit fractionally more radiation than the black onyx areas.
Other than this, SCP-001 is totally inert. It is opaque to all forms of electromagnetic and hard radiation, and, so far, indestructible. Its onyx/gold composition is guessed from visual inspection, since the taking of samples for chemical analysis has proven impossible.
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Tier: Unknown, potentially Low 2-C
Name: SCP-001, "The Lock", "Apakht"
Origin: SCP Foundation
Age: At least 361
Classification: Keter Class Anomalous Object
Wielders: SCP Foundation
Attack Potency: Unknown (Can't attack due to being a lock), potentially Universe level+ (SCP-001 gives off radiation identical to the cosmic microwave background radiation of our universe, and likely contains another universe of similar structure to our own, Opening 001 would likely result in that universe's destruction, It is believed that our own universe is contained within a similar device)
Speed: Below Average Human (Immobile)
Durability: At least Town level (Was completely undamaged by the detonation of a 15 kt TNT-equivalent atomic warhead at point blank range), possibly higher
Range: Standard melee range, possibly Universal+
Weaknesses: Missing its key