A tool designed for estimating the market price of diamonds with the antique, cushion-shaped facet pattern known as “old mine cut,” considers factors like carat weight, clarity, color, and cut quality. For instance, a one-carat, VS2 clarity, J color stone with excellent polish and symmetry would be assessed differently than a similar sized diamond with an I1 clarity, K color and fair polish. This assessment relies on comparing the provided characteristics against market data for similar stones.
Accurately appraising these historical gems requires specialized knowledge due to their unique faceting structure. These cuts, prevalent from the 1700s to the early 1900s, exhibit a distinctive chunky facet pattern and warmer, less brilliant appearance than modern cuts. Understanding these nuances is critical for both buyers and sellers, allowing individuals to make informed decisions within the antique diamond market. These tools offer a preliminary valuation, crucial for initial price guidance.