Investment Grade 24K Gold Refining Bar / Ingot Round Section
Gold Bar / Ingot (Round Format) · Pure Yellow Gold
Purity: 24K (99.9% Pure Gold) - Based on characteristic luster and lack of copper/silver alloying visuals
Type
Gold Bar / Ingot (Round Format)
Purity
24K (99.9% Pure Gold) - Based on characteristic luster and lack of copper/silver alloying visuals
Gold Type
Pure Yellow Gold
Weight
Estimated 10g to 31.1g (1 Troy Oz) based on section thickness
Description
A semi-polished round gold bullion segment featuring a high-quality satin circular grain. The item bears a clearly struck six-digit serial number, signaling its place in a regulated metal supply chain. The surface displays a distinct rainbow-like diffraction (iridescence) typical of fresh, high-purity gold surfaces with mechanical micro-texturing.
Key Features
Mechanical circular brushing, precision-stamped numeric identifier '510021', and high-purity color saturation.
Color & Finish
Deep, rich golden yellow with a circular brushed/satin lathe finish; exhibiting iridescent diffraction due to micro-grooves
Hallmarks & Stamps
Stamped '510021' serial number in a crisp sans-serif typeface, likely indicating a specific batch or inventory tracking for a bullion refiner
Dimensions Estimate
Diameter estimated at 20mm-30mm; thickness approximately 1.5mm-2.5mm
Gemstones & Inlays
None; solid precious metal bullion
Clasp & Closure
N/A - Bullion item
Chain & Links
N/A - Solid industrial/bullion edge finish
Craftsmanship Details
Precision lathe-turned surface finish with automated mechanical stamping for the serial number.
Authentication Indicators
The depth and sharpness of the serial number stamp suggest a heavy industrial press rather than hand-stamping. The specific way the light reflects off the grooves (Schiller effect) is characteristic of 24K density.
Origin & Maker
Likely a major international refiner such as PAMP Suisse, Heraeus, or Valcambi (indicated by the high-precision finishing and serial number format)
Era & Period
Contemporary (2000s-present) - Indicated by precision mechanical finishing and modern font stamping
Age Estimate
Modern production, likely within the last 10-15 years
Cultural Significance
Represents the modern standard for global monetary reserves and private investment gold.
Condition Notes
Very Good - Light surface micro-scratches consistent with bullion handling; no major dings or deformation. Surface luster remains vibrant.
Value Estimate
Primarily Melt Value + 3-5% Bullion Premium. Value determined by: (Weight in Tray Oz) x (Current Gold Spot Price).
Care & Maintenance
Avoid contact with other metals to prevent scratching (24K is very soft). Use only a soft microfiber cloth; avoid chemical cleaners which are unnecessary for pure gold.
Similar Items
Gold Kangaroo bullion coins, Credit Suisse 1oz minted bars, or Perth Mint cast buttons.
Interesting Facts
999.9 fine gold is so soft that it is rarely used in jewelry without alloys; items like this are primarily used for wealth storage or as 'blanks' for high-end minting.