The R. Bruce Carson Jewelers Calculators provides free professional grade Jewelry and Precious Metals calculators for use by our customers and business partners.  These calculators help assess the value of precious metals found in jewelry, coins and other items.  The calculators also provide accurate estimates of the carat weight of diamonds and the carat weight of other gems based on their shape and dimensions.

"He will sit as a refiner and purifier of silver; he will purify ... and refine them like gold and silver." (Malachi 3:3)

Precious Metals Calc

The Precious Metals Calculator has functions to compute the price a reputable jeweler can reasonably pay for items for their value in Gold, Platinum, Palladium and Silver.

• Gold Buy Price: Computes the Jeweler's Buy Price for gold based on the current value of gold, the karat purity, a scrap processing fee, and the jeweler's profit margin.
• Platinum Buy Price: Computes the Jeweler's Buy Price for platinum based on the current value of platinum, the percent purity, a scrap processing fee, and the jeweler's profit margin.
• Palladium Buy Price: Computes the Jeweler's Buy Price for palladium based on the current value of palladium, the percent purity, a scrap processing fee, and the jeweler's profit margin.
• Silver Buy Price: Computes the Jeweler's Buy Price for silver based on the current value of silver, the percent purity, a scrap processing fee, and the jeweler's profit margin.
• Junk Silver Value: Computes the current value for Junk Silver based on the dollar Face Value and the current Silver Spot Price in U.S. dollars.
• Clad Silver Value: Computes the current value for U.S. silver half dollars with dates between 1965 to 1970, based on the dollar Face Value, a Clad Silver factor and the current Silver Spot Price. 
• Precious Metal Buy Price: Computes the Jeweler's Buy Price for several types of precious metals based on the current value of a precious metal, the metal's purity as a percentage, a scrap processing fee, and the jeweler's profit margin.
• Gold Coin Calculator: Provides the estimated value of commonly traded gold coins.
• Talents of Gold Today: Current market value of a talent of gold.

"The Lord detests dishonest scales, but accurate weights find favor with him. (Proverbs 11:1)"

Diamond Carat Weight Calculators

This jewelers suite of calculators includes carat weight estimations of diamonds based on the cut diamond's shape and size which can be measured while still within a setting. This enables the jeweler to estimate the carat weigh of the diamond without damaging the setting.

The diamond weight formulas contain carat weight equations that are specific to diamonds and diamond cuts:

• Compute carat weight of Round Brilliant diamond 
• Compute carat weight of Oval Brilliant diamond
• Compute carat weight of Heart Shaped diamond
• Compute carat weight of Emerald Cut diamond 
• Compute carat weight of Baguette diamond
• Compute carat weight of Princess Cut diamond
• Compute carat weight of Triangular Brilliant diamond 
• Compute carat weight of Marquise Brilliant diamond
• Compute carat weight of Pear Shaped Brilliant (Teardrop) diamond 
• Compute carat weight of Old European cut diamond
• Compute carat weight of Tapered Baguette diamond
• Compute carat weight of Cushion diamond

Gemstone Carat Weight Calculators

Similar to the diamond functions, the Gemstone Carat Weight Calculators provide accurate carat weight estimates of gems in various shapes and cuts including the following gem types:

Agate, Alexandrite, Almandite garnet, Amethyst, Andalusite, Aquamarine, Aventurine, Beryl, Bloodstone, Blue Topaz, Carnelian, Cats eye, Chalcedony, Chrysoberyl, Citrine, Corundum, Demantoid Garnet, Diamond, Emerald, Golden beryl, Green beryl, Jadeite, Kunzite, Lapis Lazuli, Morganite, Nephrite Jade, Onyx, Opal, Precious topaz, Pyrope garnet, Quartz, Rhodolite garnet, Rose Quartz, Ruby, Sapphire, Sardonyx, Smokey quartz, Spessartite garnet, Spinel, Tanzanite, Topaz, Tourmaline, Tsavorite garnet, Turquoise, Yellow topaz, Zircon