How to Calculate True COGS for Handmade Jewelry When Gold Prices Move

Gold hit $5,602/oz on January 28, 2026 — an all-time record. Between January 2023 and March 2026, the gold price rose approximately 180%. Silver gained 242% over the same period. Platinum nearly doubled.

For jewelry makers, this isn't an abstraction. It's the difference between a profitable ring and one you're selling at a loss without knowing it. A 14K gold band you priced at $540 when gold was $1,800/oz has a material cost that now exceeds that price. The keystone formula your business was built on is producing negative margins on some of your best sellers.

This guide gives you the framework to calculate your true cost of goods sold — including a step-by-step formula, the math on margin erosion at current gold prices, and what your tracking system needs to do to keep you current.

What COGS actually means — and what jewelers usually get wrong

The IRS defines Cost of Goods Sold for a manufacturer as: Beginning Inventory + Purchases − Ending Inventory. It includes the total cost of raw materials, work in process, finished goods, and materials and supplies used in manufacturing. It appears on Schedule C, Part III, and flows directly to your reported profit.

For a jewelry maker, COGS has four components. Most jewelers only track one of them.

Component	What it includes	Commonly tracked?
Direct materials	Precious metals, gemstones, findings, solder, consumables, packaging, inbound freight	Usually
Direct labor	Bench time, stone setting, finishing, polishing, outsourced casting/engraving	Rarely
Manufacturing overhead	Tool depreciation, equipment, studio rent (production portion), utilities	Almost never
Waste/scrap factor	Metal lost to polishing, filing, casting, solder splatter	Occasionally

The practical effect of skipping labor and overhead: your reported COGS is lower than reality, your profit looks higher than it is, and your pricing decisions are based on incomplete information.

Per Craftybase's own COGS guide: "If you don't have the COGS expense deductions to match [IRS] expectation, then it can possibly invite the possibility of tax audits and further scrutiny." (See our full Craftybase comparison for more on where it fits — and where it doesn't.)

Step-by-step COGS calculation at current gold prices

Let's work through a complete COGS calculation for a standard piece: a 14K yellow gold solitaire ring with a 0.50ct diamond, women's size 6.

Parameters

Finished ring weight: 5 grams of 14K gold
14K gold purity: 58.3% pure gold (14 ÷ 24 = 0.5833)
Waste factor: 10% for a cast and hand-finished piece
Gold spot price (March 2026): ~$5,050/troy ounce
1 troy ounce = 31.1035 grams

Step 1 — Calculate gold needed including waste

5.0g finished × 1.10 (10% waste factor) = 5.5g total gold required

Step 2 — Convert spot price to per-gram

$5,050 ÷ 31.1035 = $162.37/g pure gold

Step 3 — Adjust for 14K purity

$162.37 × 0.583 = $94.66/g of 14K gold

(Add ~$1–$2/g for alloy metals and refiner premium, bringing practical cost to ~$96/g of 14K casting grain.)

Step 4 — Calculate total metal cost

5.5g × $96/g = $528 in metal alone

Step 5 — Add all components

Component	Detail	Cost
14K yellow casting grain (w/ waste)	5.5g × $96/g	$528
0.50ct round brilliant diamond	VS2/G, wholesale	$1,000
4-prong basket setting	14K yellow, 5mm	$28
Medium solder + flux	0.1g + consumables	$12
Presentation box	Leatherette w/ insert	$4
Direct labor	3 hours × $25/hr	$75
Overhead allocation	10% of above	$164.70
Total true COGS		$1,811.70

Your true cost to make this ring is $1,811.70. At keystone (2× COGS), retail should be $3,623. At 2.5× for a healthier margin, retail is $4,529.

The margin erosion problem — actual math

Here's what's happening to jewelers who haven't repriced since gold was at $1,800/oz. Same ring, same labor, same overhead. Only the gold price changes.

Gold price ($/ozt)	Metal cost (5.5g 14K)	True COGS	Keystone price	Margin at $540
$1,800 (Jan 2022)	$168.70	$402.70	$805	25.5%
$2,500 (2024)	$234.30	$468.30	$937	Falling
$3,000 (early 2025)	$281.15	$515.15	$1,030	Shrinking
$5,050 (March 2026)	$528.00	$762.00	$1,524	LOSS: −$222

A jeweler who priced a simple 14K gold ring at $540 (reasonable when gold was $1,800/oz) is now selling that ring at a $222 loss on materials alone when gold is at $5,050/oz — before labor, overhead, and platform fees. This isn't a hypothetical. It's the current situation for any maker who hasn't repriced through the gold surge.

"I am starting the process of re-pricing all of my made-to-order gold jewelry offerings to reflect the soaring gold prices... I generally use a keystone formula, but I cannot, obviously, include diamonds in the traditional keystone markup or the prices could get astronomical." — Ganoksin forum, January 2025

Keystone pricing is breaking — here's what to use instead

Keystone pricing — setting retail at 2× your cost — was codified as the jewelry industry standard by The Keystone trade publication in the late 19th century. At $1,800 gold, it worked reasonably well. At $5,000 gold, marking up $528 of metal by 2× produces a $1,056 metal line on a ring that customers were buying for $540 last year. The formula breaks when commodity prices move this dramatically.

Industry experts have converged on a tiered approach (we cover the full pricing formula in our guide to pricing handmade jewelry):

Apply a lower multiplier (1.2–1.5×) on high-cost materials — gold, platinum, high-value stones
Apply standard markup (2× or higher) on labor, findings, and standard materials
Set a price floor based on true COGS — never price below cost regardless of competitive pressure
Review pricing when material costs move 10–15% from your last price-set point, not daily

Metalsmith Society's pricing formula for context: (Materials × 3) + Labor as a starting point, with adjustments for market positioning. For fine jewelry with high material costs, this may need modification — the multiplier on gold drops while the multiplier on labor stays constant.

Inventory accounting methods — which one is right for jewelry

When you buy gold at different prices over time, accounting rules require a method for determining which cost applies to the gold you used. The three methods, and which one works for jewelry:

Weighted Average Cost (WAC)

Pool all purchases of a material, calculate the weighted average cost per unit, and apply that to every deduction. When you buy 50g of 14K grain at $80/g in January and another 50g at $96/g in March, your WAC is $88/g. All pieces built in Q1 and Q2 use $88/g.

Best for jewelry. Gold is a fungible commodity — once batches are melted together, they're physically indistinguishable. WAC smooths price volatility, is simple to administer, and matches the physical reality of how most jewelers work. Craftybase uses WAC. Most jewelry accounting software defaults to WAC.

FIFO (First In, First Out)

Oldest inventory costs are assigned to COGS first. In a rising gold market, FIFO produces lower COGS (using older, cheaper gold) → higher reported profit → higher current tax liability. Your balance sheet shows ending inventory closer to current market value.

Fine for rising markets if you want accurate balance sheet inventory values. Creates a tax timing issue in volatile markets — you're paying tax on gains that aren't yet realized.

Specific Identification

Each item tracked with its exact acquisition cost. Required by GAAP and IFRS for "inventory items that are not ordinarily interchangeable."

Best for high-value gemstones and one-of-a-kind pieces. A 3ct alexandrite you paid $28,000 for should be tracked at that specific cost — it's not interchangeable with a different 3ct stone. Same principle applies to unusual estate stones, significant diamonds, and bespoke commissioned pieces with specific materials purchased for them.

The practical recommendation: Use Weighted Average Cost for precious metals and standard findings — simpler, smooths volatility, matches how metals are physically used. Use Specific Identification for high-value gemstones (any stone over $500 wholesale), unusual estate stones, and significant commissioned pieces. Whatever method you choose, apply it consistently year-over-year and declare it on Schedule C, Part III, Line 33.

Tax implications of getting COGS wrong

Understating COGS

If you only track materials and skip labor and overhead, your COGS is lower than reality. Lower COGS = higher reported income = higher tax liability. You're overpaying taxes on money you actually spent making jewelry.

Inconsistent tracking invites scrutiny

The IRS expects a jeweler who makes and sells goods to have significant COGS deductions. A maker reporting $100K in revenue with minimal or no COGS is a pattern that can invite examination. Accurate, consistent tracking — using one of the three recognized methods applied year-over-year — is both the legally correct approach and the best protection if you're ever asked to document your numbers.

The small business exemption

Most independent jewelry makers qualify for the Section 263A(i) small business taxpayer exemption — which applies to businesses with average gross receipts of $31M or less over the prior three years. This exempts you from the complex UNICAP capitalization rules and gives you more flexibility in how you account for inventory costs. Even with this exemption, your chosen method must "clearly reflect income" — expensing 100% of metal purchases regardless of unsold inventory may not pass this standard if your year-end inventory is significant.

Consult your accountant. The rules here have nuance that applies differently depending on your business structure and scale.

What your tracking system needs to do

Calculating COGS accurately when precious metals prices move requires a system that:

We cover the full requirements in our guide to what a Shopify jewelry inventory app needs to do. In short, it requires a system that:

Stores material costs at the time of purchase — so WAC or FIFO calculations are based on what you actually paid
Tracks the exact quantity of each material used in each production run — weight-accurate, including waste factors
Updates the cost per piece when gold prices move — so you're seeing today's replacement cost, not last quarter's purchase price
Snapshots the cost at build order completion — so your COGS history reflects what the ring actually cost to build that day
Integrates with how you sell — so COGS flows from production into your Shopify orders without manual reconciliation

A spreadsheet can do steps 1 and 2 with discipline. It cannot do 3, 4, and 5 automatically. That's why gold-volatile periods expose the limits of manual tracking faster than anything else. For the full picture of what a weight-based tracking system needs, see our guide to tracking raw materials for Shopify jewelry stores.

"It's hard to imagine any other industry whose raw material costs have risen as dramatically as gold." — Rowan CEO Louisa Schneider, CNBC

Industry benchmarks: what healthy margins look like

Jewelry category	Material % of retail	Typical markup	Target gross margin
Fine jewelry (gold + gemstones)	25–40%	2–3×	40–70%
Sterling silver artisan	20–30%	3–4×	50–65%
Custom / bespoke	20–35%	2.5–3×	40–60%
Fashion / costume	10–20%	4–6×	60–80%

If your current gross margins are outside these ranges — especially if they've drifted without an intentional pricing change — gold price movement since 2022 is the most likely culprit. Run the COGS calculation on your five best sellers at today's metal prices. The results are usually clarifying.

Note: This article provides general educational information about jewelry business management. It is not tax or legal advice. Consult a qualified accountant for guidance specific to your business structure and jurisdiction.