A Moon Magic piece's exact stone value, metal value, and retail markup cannot be separated from its listed price using public product data. You can estimate theoretical metal content, but stone value requires quality evidence, while retail markup requires costs the company does not disclose. Retail markup means the amount added above the seller's cost. A sale price, gemstone carat weight, and metal weight can support limited calculations, but they do not reveal that underlying cost.
Table of Contents
- Why price per carat gives the wrong answer
- What determines the stone portion?
- How to estimate the metal content
- Why retail markup remains unknowable
- A practical buying and appraisal checklist
Why price per carat gives the wrong answer
moon Magic's Skin-Touch Moonstone Necklace lists at $95, reduced from $120. Its product disclosure specifies a 2.60-carat moonstone and 1.69 grams of total metal weight, without assigning separate prices to either component, according to the Moon Magic product page. The Free Spirit Necklace lists at $140, reduced from $320.
Moon Magic discloses 65.07 carats of rainbow moonstone, white zircon, and 1.75 grams of metal on the Free Spirit product page. Dividing price by moonstone weight produces about $36.54 per carat for Skin-Touch and $2.15 per carat for Free Spirit. Those figures are retail-price ratios, not gemstone valuations. The comparison shows why disclosed carat weight cannot be treated as the stone's share of the purchase price.
What determines the stone portion?
Carat measures weight, not quality. The Gemological Institute of America identifies sheen strength and color, bodycolor, and clarity as important moonstone value factors in its moonstone buyer's guide. Without evidence about those characteristics, a defensible stone-only value cannot be calculated. The gemstone name also matters.
GIA explains that "rainbow moonstone" is technically transparent labradorite, a related feldspar accepted in the gem trade. An appraisal should therefore identify the actual variety instead of treating every product labeled moonstone as identical material. For a meaningful comparison, match stones by variety, weight, bodycolor, clarity, and the appearance of their sheen. A large carat figure alone does not show how much of the necklace price belongs to the stone.
How to estimate the metal content
First confirm the material for the exact color or finish selected. Moon Magic states that its sterling silver is 92.5% pure silver and describes its vermeil as 18-karat gold over sterling silver with a 2.5-micron gold layer in its materials guide.
For confirmed sterling, use this preliminary calculation: This is not a guaranteed scrap payment. Findings, plating, measurement scope, refining deductions, and a buyer's terms can reduce recoverable value. Vermeil must not be priced as solid 18-karat gold because the gold is only a thin layer over sterling silver.
- Disclosed metal weight × 0.925 = theoretical fine-silver content.
- At 1.69 grams, the theoretical result is about 1.56 grams of fine silver.
- At 1.75 grams, the theoretical result is about 1.62 grams of fine silver.
- Multiply that result by a current per-gram silver price only to estimate theoretical metal value.
Why retail markup remains unknowable
Moon Magic publishes selling prices and some product weights, but not its gemstone acquisition costs, labor, overhead, wholesale costs, or item-level gross margins. Therefore, neither dollar markup nor markup percentage can be verified from the public figures. If the seller's item cost were known, dollar markup would equal selling price minus cost. Percentage markup would equal that difference divided by cost.
Substituting estimated scrap value for the seller's cost would produce a misleading result because scrap value does not represent the full cost of a finished necklace. A discount is also not a markup calculation. The Skin-Touch reduction from $120 to $95 is about 20.8%, while the Free Spirit reduction from $320 to $140 is 56.25%. Those percentages describe changes from the displayed reference prices, not profit or production cost.
A practical buying and appraisal checklist
Use the disclosed figures to establish boundaries rather than manufacture a precise component breakdown. Before buying, comparing, insuring, or selling a piece: For vermeil, write "gold over sterling silver" on any valuation worksheet rather than entering the piece as solid 18-karat gold.
- Confirm whether the selected item is sterling silver, vermeil, or another material.
- Verify whether the stated weight covers metal alone or the entire finished piece.
- Record the gemstone's stated variety and carat weight.
- Request quality information covering sheen, bodycolor, and clarity.
- Keep sale-price calculations separate from metal, stone, and markup estimates.