We specialise in lustrous colours, strong, dense, precise and porosity-free precious metal castings, we manufacture our own master alloys to ensure we are can provide the highest quality to all of our clients.
Our high-end clients prioritise quality, precision, consistency, colour, and density over price or speed. We focus exclusively on a refined selection of precious metals to create master alloys of the highest calibre. Years of research and in-house development have perfected these formulations, balancing base and precious metals to produce alloys that excel across the jewellery industry.
Once cast, our castings deliver:
Our castings resist blooming and tarnishing over time, curated with feedback from skilled bench jewellers and high-volume retailers across Australia. Photographs below showcase fully polished castings in a specialised photography booth, calibrated to present colours as accurately as possible under controlled lighting conditions
Fine-Silver
(999)
Ultra-Silver
5% Palladium (925)
Tarnish-Resistant
Silver (925)
Sterling-Silver
(925)
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9 Karat Premium White Gold
13% Palladium - (375)
10 Karat Premium White Gold
13% Palladium - (417)
14 Karat Premium White Gold
13% Palladium - (585)
18 Karat Premium White Gold
13% Palladium - (750)
9 Karat Premium Champagne Rose Gold
(375)
10 Karat Premium Champagne Rose Gold
(417)
14 Karat Premium Champagne Rose Gold
(585)
18 Karat Premium Champagne Rose Gold
(750)
22 Karat Premium Champagne Rose Gold
(916)
9 Karat Premium Radiant Yellow Gold
(375)
10 Karat Premium Radiant Yellow Gold
(417)
14 Karat Premium Radiant Yellow Gold
(585)
18 Karat Premium Radiant Yellow Gold
(750)
22 Karat Premium Radiant Yellow Gold
(916)
24 Karat
Fine Gold
(999)
Our Premium White Golds in 9, 10, 14, and 18 karat are formulated with 13% palladium, producing a cooler, deeper and more neutrally grey-white tone while avoiding the green, yellow and brown hues commonly seen in lower-palladium white gold alloys. Through extensive in-house alloy development, 13% palladium has proven to be the optimal balance of colour, castability and mechanical bench performance. Higher palladium levels such as 15% Pd offer no visible improvement in whiteness especially if rhodium plated, rather higher palladium only increases the risk of porosity, miscasts, surface texture issues and gold loss.
Our Premium Champagne Rose Gold delivers a consistent, elegant tone across 9, 10, 14, 18 and 22 karat alloys, creating a visually harmonious match between karats. This sophisticated champagne hue is highly desirable, combining beauty with superior workability. It is less prone to cracking than traditional pink or red gold, making it ideal for bench jewellers seeking precision, durability, and consistently stunning results.
Our Premium Radiant Yellow Gold, available in 9, 10, 14, 18 and 22 karat, delivers a rich, consistent hue that is highly sought after in the Australian market. The differences between karats are subtle, often imperceptible without instrumentation. We’ve carefully refined this alloy to avoid washed-out or overly brassy tones, producing a yellow gold that is vibrant, elegant, and true to the colour jewellers and clients desire. 24FKG is pure fine gold and when casted is 99.95% purity.
FS999 is pure fine silver and when casted is 99.95% purity.
SS925 is 925 sterling silver which is the entry level, cost-effective precious metal we cast, treated with the same care, precision and accuracy that all our other precious metals receive.
US925 is the brightest, whitest precious metal we offer, outperforming standard 925 sterling silver in both brilliance and finish. Enhanced with 5% palladium, it delivers:
TRS925 - Coming Soon Expected mid Q2 2026
At Hygrade Casting, quality comes first. Every process, decision, and investment is made to deliver exceptional castings with absolute consistency. We use modern, high-precision casting technology and refined techniques honed under leading precious metal technicians from Australia, Germany, Switzerland, Japan, and Turkey, no legacy methods, no short-cuts and no compromises.
We work with jewellers who demand flawless results, from specialist workshops to high-volume retailers. Transparency, clear communication, and tailored production cycles ensure we build long-term partnerships, delivering precision, reliability, and finish that sets the standard in the industry.
We formulate and granulate our own master alloys in-house, using only the highest-purity precious metals from accredited Australian bullion companies and premium base metals from trusted local suppliers. Specialty metals, such as indium, are sourced directly from verified and accredited European suppliers. Every material is chosen to uphold precision, consistency, and uncompromising quality.
We never use Lead, Nickle, Gallium, Iridium, Cobalt, Tin, Tungsten, Brass, Steel, or Osmium in our metals. Every casting we produce embodies integrity, longevity, and performance, a standard our clients rely on without compromise.
By precisely controlling flask temperatures, casting pressures, and quenching times, we eliminate common defects such as porosity, scorching, and brittleness. Every step is optimised for perfection, producing clean, bright castings with tight grain structure and exceptional tensile strength without the brittleness.
All our castings are hypoallergenic and safe for wear on the external body (rings, earrings, pendants, and more) as we refuse to use base metals like nickel or gallium. Stone-set-in-wax casting is not offered as the risks and drop in quality outweigh the rewards.
