ForMatter/Materials/metal/14k Rose Gold
mat_gold_rose_14k

14k Rose Gold

precious metal alloy, copper-tinted gold · pink gold 14k, red gold 14k, .585 rose
highlast updated 2026-04-27
metallic 0.00
hue shift +0°

58.5% gold pushed further pink by a higher copper fraction than rose 18k. The most-copper alloy that still legally counts as gold in the U.S. market — and visually it shows. Cooler than copper itself, warmer than yellow gold, popular through cycles of fashion and unpopular between them. The current cycle as of writing keeps it ascendant.

Au 58.5 / Cu ~33 / Ag ~8.5 typical. The relatively high Cu fraction maximizes color saturation toward pink-red while preserving 14k hallmark eligibility. Age-hardens through Cu₃Au ordering; Vickers ~175 HV achievable. Liquidus ~830 °C. The Cu-rich end of the alloy makes it slightly more reactive to skin acids than 14k yellow — extended-wear darkening on some skin chemistries is documented.

mechanical

  • tensile_strength_mpa_annealed360
  • hardness_vickers_annealed88
  • hardness_vickers_cold_worked175
  • hardness_vickers_age_hardened260
  • density_kg_m312900
source: World Gold Council; Untracht

thermal

  • liquidus_c830
  • solidus_c790
source: World Gold Council casting reference

Sustainability

  • embodied carbon kg co2e per kg7800
  • sourceEditorial estimate from ICE / Granta CES EduPack class databases — industry mean, with cradle-to-gate boundary unless otherwise noted. Embodied carbon for any specific product depends on supplier mix, recycled content, and energy grid; verify against a primary source before using these numbers in a sustainability claim.
  • embodied carbon recycled kg co2e per kg505
  • recyclabilityvery high — refiner-recoverable
  • biodegradableFalse
  • certificationsLBMA / RJC / Fairmined applicable to source bullion
visual
the most pink of the karated golds — a warm rosé tone visibly distinct from rose 18k in side-by-side view
tactile
stiff, holds an engraved line cleanly

PBR starter values

Principled BSDF defaults derived from the sphere metallic finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material.

# finish:      metallic
albedo        #c98a78
metallic      1.00
roughness     0.25
ior           1.45
transmission  0.00
clearcoat     0.00
sheen         0.00
anisotropic   0.00
copy as JSON 
{
  "albedo": "#c98a78",
  "metallic": 1.0,
  "roughness": 0.25,
  "ior": 1.45,
  "transmission": 0.0,
  "clearcoat": 0.0,
  "sheen": 0.0,
  "anisotropic": 0.0
}
Blender 4.x Python 
# Blender 4.x — Principled BSDF
# 14k Rose Gold · finish: metallic
import bpy
mat = bpy.data.materials.new(name="mat_gold_rose_14k")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value         = (0.5841, 0.2542, 0.1878, 1.0)
bsdf.inputs["Metallic"].default_value           = 1.000
bsdf.inputs["Roughness"].default_value          = 0.250
bsdf.inputs["IOR"].default_value                = 1.450
bsdf.inputs["Transmission Weight"].default_value = 0.000
bsdf.inputs["Coat Weight"].default_value        = 0.000
bsdf.inputs["Sheen Weight"].default_value       = 0.000
bsdf.inputs["Anisotropic"].default_value        = 0.000
KeyShot Python (lux) 
# KeyShot 11+ — lux Python API, Generic material
# 14k Rose Gold · finish: metallic
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_gold_rose_14k", materialType="Generic")
mat.setProperty("diffuse",      (201, 138, 120))   # 8-bit sRGB
mat.setProperty("metallic",     1.000)
mat.setProperty("roughness",    0.250)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.000)
Substance pbrMetalRough 
{
  "_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
  "_about": "14k Rose Gold \u00b7 finish: metallic",
  "baseColor": {
    "r": 0.5841,
    "g": 0.2542,
    "b": 0.1878
  },
  "metallic": 1.0,
  "roughness": 0.25,
  "ior": 1.45,
  "opacity": 1.0,
  "anisotropyLevel": 0.0,
  "_notes": "Channels listed are the standard Substance pbrMetalRough output. Drop into a Uniform Color node per channel, or as the constant input on a layered stack."
}
glTF 2.0 Metallic-Roughness 
{
  "asset": {
    "version": "2.0",
    "generator": "ForMatter"
  },
  "materials": [
    {
      "name": "mat_gold_rose_14k",
      "pbrMetallicRoughness": {
        "baseColorFactor": [
          0.5841,
          0.2542,
          0.1878,
          1.0
        ],
        "metallicFactor": 1.0,
        "roughnessFactor": 0.25
      },
      "extensions": {
        "KHR_materials_ior": {
          "ior": 1.45
        }
      }
    }
  ]
}
USD Preview Surface 
# USD Preview Surface — UsdShade.MaterialLook prim attributes
# 14k Rose Gold · finish: metallic
def Material "mat_gold_rose_14k" {
    token outputs:surface.connect = </mat_gold_rose_14k/PreviewSurface.outputs:surface>

    def Shader "PreviewSurface" {
        uniform token info:id = "UsdPreviewSurface"
        color3f inputs:diffuseColor = (0.5841, 0.2542, 0.1878)
        float   inputs:metallic     = 1.000
        float   inputs:roughness    = 0.250
        float   inputs:ior          = 1.450
        float   inputs:opacity      = 1.000
        float   inputs:clearcoat    = 0.000
        token   outputs:surface
    }
}
↓ download glTF material
ProcessBrazing · Laser Cutting · SLA 3D Printing (Stereolithography) · CNC Milling
Substitutes
18k Rose Gold
14k Yellow Gold

Citations