30X21 triplet Loupe Magnification_3X to 9X if used on battery power

if used on battery power it turns itself off after 10mns of non-activity

Natural (mined) diamond

the built-in computer will calculate it's specific gravity (SG) and give a suggestion as to what the stone might be

beautifully-presented in a case with a clear lid

30X21 triplet Loupe Magnification_3X to 9X if used on battery powerSummary 30X21 The 'standard' magnification for a loupe (for jewellery & gemstones, stamps & coins) is 10X. This one is 30X The diameter of the lens is 21mm Useable diameter of this lens (allowing for the rim that holds the lens in place) 18mm. Too see reviews of loupes, click here Detail This really is the largest possible strongest possible loupe with the highest quality triplet lens (even allowing for the "useable" area of the lens). However, there