Grieger lapidary diamond blade (not authenticated)

The item is a large circular lapidary saw blade featuring a vibrant blue metal body with visible concentric circular grinding marks radiating outward from the central arbor hole. Affixed near the center is a round paper label with a distinctive yellow and black design. At the top of the label, a graphic of a diamond surrounded by radiating sunburst lines appears above a black rectangular banner containing the bold white text reading 'GRIEGER'. Below this banner, the label features curved text reading 'LAPIDARY DIAMOND BLADE'. A lower black section bears the white text 'GRIEGER'S INC.' followed by 'Pasadena' and 'Calif.', and the outer curved margin states 'MADE EXCLUSIVELY TO OUR SPECIFICATIONS BY MK DIAMOND BLADE COMPANY'. The overall visual evidence supports an attribution to Grieger's Inc., based on the prominently printed label, though the item is unverified and not authenticated. The owner's provided context mentions a 'Geiger 24 inch lapidary saw blade', which aligns closely with the visible branding, though specific dimensions cannot be fully confirmed from this close-up photograph alone. The surface condition appears clean with minor reflective glare and standard manufacturing textures consistent with heavy-duty cutting equipment used in lapidary arts and stone working.

Based on the visual evidence provided, the owner identifies this item as a 24-inch lapidary saw blade bearing markings associated with Grieger's Inc. and manufactured by the MK Diamond Blade Company. From the photograph, I can see a vibrant blue metal body with concentric grinding marks and a well-preserved yellow and black paper label detailing the brand specifications. However, I cannot verify the exact dimensions, metal composition, core flatness, or functional integrity from a two-dimensional photograph alone, and a physical inspection would be needed to confirm these details. The estimated value range of $150 to $300 assumes the attribution to Grieger's Inc. is correct and that the blade is in sound, usable, or collectible condition. Large-format lapidary saw blades of this type see steady demand among hobbyists and stone-working artisans who utilize vintage heavy-duty cutting equipment, though prices fluctuate based on wear, tensioning, and usability. Because this piece is unverified and not authenticated, this estimate is contingent upon physical verification; if the item were determined to be a modern generic replica, a reproduction, or heavily warped and unusable, the value would likely drop to a scrap metal or lower utility value in the $40 to $80 range. To fully confirm the nature and potential collector value of this equipment, an in-person examination by a qualified lapidary equipment expert or tool appraiser would be required.