Appearance: Ammonium biurate crystals are yellowish-brown and can be seen in a “thorn apple” shape (round with thorny projections) or in spherical form. Chemical ...

Triple phosphate crystals may be normal but often are associated with alkaline urine and UTI (typically associated with Proteus species). These crystals are colorless and have a characteristic ...

 This is Alkaline Urine: notice triple phosphate crystals These “triple phosphate” crystals look like rectangles, or coffin lids     Source & References: ...