Jewelry Docs

1. Introduction

This document explains key jewelry terminologies and calculations used in the ERP system to ensure consistent understanding and implementation.

2. Jewelry Terminologies

Term Definition Example Real-Time Example
Karat A unit of measurement for the purity of gold, where 24K is pure gold. 22K gold has 91.6% gold and 8.4% other metals. A customer purchasing a 22K gold chain weighing 10 grams in a jewelry store.
Gross Weight The total weight of a jewelry piece, including stones, metals, and other materials. Jewelry with stones and metal weighs 15 grams. Gross weight includes 10 grams of gold and 5 grams of gemstones in a necklace.
Net Weight The weight of the metal only, excluding stones and other non-metal components. If a jewelry piece weighs 15 grams and stones weigh 5 grams, the net weight is 10 grams. The gold in a ring weighs 7 grams after removing the diamond weight.
Making Charges The cost added for crafting a jewelry piece. $100 for crafting a custom-designed gold necklace. A jeweler charges $50 for crafting a 5-gram gold earring.
Wastage A percentage added to account for material lost during crafting. 5% wastage for a 10-gram gold necklace equals 0.5 grams. A gold bangle weighing 12 grams incurs 0.6 grams of wastage due to crafting.

3. Karat Types

Karat Type Purity (%) Description Real-Time Example
24K 99.9% Pure gold with no other metals mixed. Soft and not suitable for most jewelry. Used in gold bars, coins, and traditional ceremonies in India.
22K 91.6% Contains 91.6% gold and 8.4% other metals like copper or silver. Suitable for lightweight jewelry. A 22K gold chain purchased for everyday wear.
18K 75% Contains 75% gold and 25% other metals. Durable and commonly used in diamond or gemstone-studded jewelry. An 18K diamond-studded engagement ring for durability and elegance.
14K 58.3% Contains 58.3% gold and 41.7% other metals. More durable and affordable compared to higher karats. A 14K gold bracelet popular in Western markets due to its durability.
10K 41.7% Contains 41.7% gold and 58.3% other metals. Highly durable and cost-effective. A 10K gold ring purchased for daily wear.

4. Metal Types

Metal Type Properties Uses in Jewelry Real-Time Example
Gold Malleable, ductile, and resistant to tarnish. Available in various karat purities (e.g., 24K, 22K, 18K). Widely used for rings, necklaces, bracelets, and earrings. A 22K gold necklace crafted for traditional Indian weddings.
Silver Highly reflective and affordable, but prone to tarnishing. Often alloyed with other metals to increase durability. Commonly used for bracelets, chains, and anklets. A sterling silver bracelet (92.5% silver) gifted for casual wear.
Platinum Durable, hypoallergenic, and naturally white. Denser and more expensive than gold. Preferred for engagement rings and high-end gemstone settings. A platinum diamond-studded ring for an engagement ceremony.
Palladium Lightweight, hypoallergenic, and resistant to tarnishing. Similar properties to platinum but less dense. Used in modern and minimalistic jewelry designs. A palladium wedding band chosen for its comfort and durability.
Rhodium Extremely reflective and resistant to tarnish. Typically used as a plating metal rather than a base. Applied as a plating over white gold and silver to enhance shine and durability. A rhodium-plated white gold ring for added brightness and protection.
Titanium Lightweight, strong, and hypoallergenic. Resistant to scratches and corrosion. Popular for modern rings, watches, and men's jewelry. A titanium wedding band designed for active lifestyles.
Tungsten Extremely hard and scratch-resistant. Heavier than most metals. Commonly used for men's wedding bands and industrial-style designs. A tungsten carbide wedding ring for durability and style.
Copper Soft and reddish in color. Often alloyed with other metals like gold or silver. Used in artistic and ethnic jewelry designs. A handcrafted copper bracelet featuring intricate designs.

5. Properties of Ornaments

Property Description Example Real-Time Example
Pieces (pcs) Refers to the number of individual items in the ornament set or design. 1 piece of ring, 2 pieces of earrings in a set. A customer buys a set of earrings and a matching pendant, consisting of 2 pieces.
Gross Weight The total weight of the ornament including all parts such as metal, stones, and other materials. 20 grams including the stones. The gross weight of a necklace is 50 grams, including the pendant and gemstones.
Net Weight The weight of the ornament excluding stones, beads, or other non-metal components. 15 grams (excluding stones). The net weight of a bracelet after removing gemstone weight is 30 grams of gold.
Stone Weight The weight of the gemstones or other stones set into the ornament. 5 grams of diamonds or sapphires. A ring set with 3 diamonds, totaling 3 grams of diamond weight.
Wastage Percentage The percentage of metal that is lost during the crafting or manufacturing process. 5% wastage on the net weight. If the ornament weighs 20 grams, 1 gram could be the wastage due to crafting.
Direct Wastage The actual weight lost during the creation of the ornament, calculated based on the wastage percentage. For a 20 grams piece with 5% wastage, direct wastage would be 1 gram. A gold ring that originally weighed 10 grams may have 0.5 grams of direct wastage during crafting.
Making per Gram The charge for making the ornament, calculated per gram of metal used in the piece. ₹1000 per gram. The cost of making a 50-gram bracelet at ₹1500 per gram would be ₹75,000.
Direct Making The direct charge for the ornament’s crafting, excluding other charges like stones, packaging, etc. For a piece with 15 grams and making charges of ₹500 per gram, the direct making cost would be ₹7,500. A custom-designed gold pendant with direct making charges of ₹10,000 for the design process.

3. Jewelry Calculations

Gold Price Calculation

Formula: Gold Price = (Gold Rate × Gold Weight) + Wastage

Description: Calculates the price of the gold component in a jewelry piece.

Input Value
Gold Rate $60/gram
Gold Weight 10 grams
Wastage 5%

Example: (60 × 10) + (60 × 10 × 0.05) = $630