Below is a Colt Model 1911 Officers Model pistol grips in estate elephant ivory. I scrimmed this young lady au natural on the customer-supplied ivory grips.
Ivory grips can be pricey, but they tend to age beautifully. However, I don’t recommend them on a gun you plan to shoot. The stress from firing can cause cracks.
I suggest you display the gun with the ivory grips, but replace them with sturdier grips when shooting.