[
    {
        "Alloy_Name": "Pure Gold (24K)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 999.9,
        "SG_Min": 19.3,
        "SG_Nominal": 19.32,
        "SG_Max": 19.35,
        "Melting_Point_C": 1064,
        "Composition_Summary": "100% Au"
    },
    {
        "Alloy_Name": "Yellow Gold 22K (Crown)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 916.7,
        "SG_Min": 17.65,
        "SG_Nominal": 17.8,
        "SG_Max": 17.95,
        "Melting_Point_C": 1000,
        "Composition_Summary": "91.7% Au, 5.5% Ag, 2.8% Cu"
    },
    {
        "Alloy_Name": "Yellow Gold 18K (Standard)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 750,
        "SG_Min": 15.2,
        "SG_Nominal": 15.45,
        "SG_Max": 15.6,
        "Melting_Point_C": 910,
        "Composition_Summary": "75% Au, 15% Ag, 10% Cu"
    },
    {
        "Alloy_Name": "White Gold 18K (Nickel)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 750,
        "SG_Min": 14.7,
        "SG_Nominal": 14.9,
        "SG_Max": 15.1,
        "Melting_Point_C": 940,
        "Composition_Summary": "75% Au, 13.5% Cu, 8.5% Ni, 3% Zn"
    },
    {
        "Alloy_Name": "White Gold 18K (Palladium)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 750,
        "SG_Min": 15.8,
        "SG_Nominal": 16,
        "SG_Max": 16.2,
        "Melting_Point_C": 1150,
        "Composition_Summary": "75% Au, 25% Pd"
    },
    {
        "Alloy_Name": "Rose Gold 18K (5N)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 750,
        "SG_Min": 15.1,
        "SG_Nominal": 15.3,
        "SG_Max": 15.5,
        "Melting_Point_C": 895,
        "Composition_Summary": "75% Au, 4.5% Ag, 20.5% Cu"
    },
    {
        "Alloy_Name": "Yellow Gold 14K (Standard)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 583.3,
        "SG_Min": 13,
        "SG_Nominal": 13.35,
        "SG_Max": 13.6,
        "Melting_Point_C": 875,
        "Composition_Summary": "58.3% Au, 20.8% Ag, 20.9% Cu"
    },
    {
        "Alloy_Name": "White Gold 14K (Nickel)",
        "Base_Metal": "Gold",
        "Fineness_PPT": 583.3,
        "SG_Min": 12.6,
        "SG_Nominal": 12.9,
        "SG_Max": 13.1,
        "Melting_Point_C": 920,
        "Composition_Summary": "58.3% Au, 24% Cu, 12.2% Ni, 5.5% Zn"
    },
    {
        "Alloy_Name": "Rose Gold 14K",
        "Base_Metal": "Gold",
        "Fineness_PPT": 583.3,
        "SG_Min": 13,
        "SG_Nominal": 13.25,
        "SG_Max": 13.5,
        "Melting_Point_C": 880,
        "Composition_Summary": "58.3% Au, 9.2% Ag, 32.5% Cu"
    },
    {
        "Alloy_Name": "Yellow Gold 10K",
        "Base_Metal": "Gold",
        "Fineness_PPT": 416.7,
        "SG_Min": 11.4,
        "SG_Nominal": 11.6,
        "SG_Max": 11.8,
        "Melting_Point_C": 850,
        "Composition_Summary": "41.7% Au, 12% Ag, 40% Cu, 6.3% Zn"
    },
    {
        "Alloy_Name": "White Gold 10K",
        "Base_Metal": "Gold",
        "Fineness_PPT": 416.7,
        "SG_Min": 11,
        "SG_Nominal": 11.2,
        "SG_Max": 11.4,
        "Melting_Point_C": 900,
        "Composition_Summary": "41.7% Au, 47% Cu, 8% Ni, 3.3% Zn"
    },
    {
        "Alloy_Name": "Yellow Gold 9K",
        "Base_Metal": "Gold",
        "Fineness_PPT": 375,
        "SG_Min": 10.9,
        "SG_Nominal": 11.15,
        "SG_Max": 11.35,
        "Melting_Point_C": 840,
        "Composition_Summary": "37.5% Au, 10% Ag, 42.5% Cu, 10% Zn"
    },
    {
        "Alloy_Name": "Fine Silver 999",
        "Base_Metal": "Silver",
        "Fineness_PPT": 999,
        "SG_Min": 10.45,
        "SG_Nominal": 10.49,
        "SG_Max": 10.52,
        "Melting_Point_C": 961,
        "Composition_Summary": "99.9% Ag"
    },
    {
        "Alloy_Name": "Sterling Silver 925",
        "Base_Metal": "Silver",
        "Fineness_PPT": 925,
        "SG_Min": 10.3,
        "SG_Nominal": 10.36,
        "SG_Max": 10.42,
        "Melting_Point_C": 893,
        "Composition_Summary": "92.5% Ag, 7.5% Cu"
    },
    {
        "Alloy_Name": "Britannia Silver 958",
        "Base_Metal": "Silver",
        "Fineness_PPT": 958.4,
        "SG_Min": 10.35,
        "SG_Nominal": 10.4,
        "SG_Max": 10.45,
        "Melting_Point_C": 940,
        "Composition_Summary": "95.8% Ag, 4.2% Cu"
    },
    {
        "Alloy_Name": "Coin Silver 900",
        "Base_Metal": "Silver",
        "Fineness_PPT": 900,
        "SG_Min": 10.2,
        "SG_Nominal": 10.28,
        "SG_Max": 10.35,
        "Melting_Point_C": 879,
        "Composition_Summary": "90% Ag, 10% Cu"
    },
    {
        "Alloy_Name": "Fine Platinum 999",
        "Base_Metal": "Platinum",
        "Fineness_PPT": 999,
        "SG_Min": 21.4,
        "SG_Nominal": 21.45,
        "SG_Max": 21.5,
        "Melting_Point_C": 1768,
        "Composition_Summary": "99.9% Pt"
    },
    {
        "Alloy_Name": "Platinum 950 (Ruthenium)",
        "Base_Metal": "Platinum",
        "Fineness_PPT": 950,
        "SG_Min": 20.6,
        "SG_Nominal": 20.7,
        "SG_Max": 20.8,
        "Melting_Point_C": 1780,
        "Composition_Summary": "95% Pt, 5% Ru"
    },
    {
        "Alloy_Name": "Platinum 950 (Cobalt)",
        "Base_Metal": "Platinum",
        "Fineness_PPT": 950,
        "SG_Min": 20.7,
        "SG_Nominal": 20.8,
        "SG_Max": 20.9,
        "Melting_Point_C": 1750,
        "Composition_Summary": "95% Pt, 5% Co"
    },
    {
        "Alloy_Name": "Platinum 950 (Iridium)",
        "Base_Metal": "Platinum",
        "Fineness_PPT": 950,
        "SG_Min": 21.3,
        "SG_Nominal": 21.4,
        "SG_Max": 21.5,
        "Melting_Point_C": 1790,
        "Composition_Summary": "95% Pt, 5% Ir"
    },
    {
        "Alloy_Name": "Fine Palladium 999",
        "Base_Metal": "Palladium",
        "Fineness_PPT": 999,
        "SG_Min": 12,
        "SG_Nominal": 12.02,
        "SG_Max": 12.05,
        "Melting_Point_C": 1555,
        "Composition_Summary": "99.9% Pd"
    },
    {
        "Alloy_Name": "Palladium 950 (Standard)",
        "Base_Metal": "Palladium",
        "Fineness_PPT": 950,
        "SG_Min": 11.75,
        "SG_Nominal": 11.85,
        "SG_Max": 11.95,
        "Melting_Point_C": 1530,
        "Composition_Summary": "95% Pd, 5% Ru/Ga"
    }
]