GUIDES
How to read the jewelry daily table
Last updated
The jewelry page’s daily theoretical table has six columns: date, estimated sell, theoretical buy, change, 999.9 recycle and that day’s FX. The live buy and sell cards at the top are a separate snapshot. Do not treat their move as the same figure as a row’s change column. This page explains the columns only. It does not copy or invent any day’s TWD amount, exchange rate, or shop board.
Money columns are TWD per qian
Theoretical buy starts from that day’s COMEX gold close. If the source is limited, the page switches to a labeled public spot reference and does not pretend it is the same contract. The close is multiplied by the USD/TWD rate paired to the row, divided by the troy-ounce gram count (about 31.1034768), multiplied by 3.75, and rounded to an integer TWD per qian. This site uses 1 qian = 3.75 grams. It is not a shop’s buy price, and it excludes spread, making charges and tax.
Estimated sell is that same theoretical buy times 1.04, then rounded. The 4% is a fixed site assumption for a common ask band. It excludes making charges, brand and tax, and it is not a posted board. Column definitions also sit in “How to read jewelry gold prices.”
For the 999.9 recycle column, this site sets the purity factor to 1, so the cell equals that row’s already-rounded theoretical buy. It is not buy times 0.9999. 916 is times 0.916 and 750 is times 0.75; those presets are on the recycling page, not in this table. The column is a fine-gold content reference, not a shop bid. Do not subtract estimated sell from it to invent a loss. Directions are in “Jewelry buy vs recycle.”
Change compares estimated sell
The table’s change is this row’s estimated sell minus the estimated sell of the previous row that was included and had an FX rate. The unit is an integer TWD-per-qian difference. There is no percent; the arrow only marks the sign. The series is walked from older to newer. On screen, the newest row is at the top.
The earliest row in the whole series has no previous row, so it shows a dash. Days omitted for missing FX are not inserted as zero. If the selected period is longer than the table, only the latest 90 rows stay visible. The oldest visible row can still show a change, because the difference was computed before the cut. The chart and the period high, low and average still use the full period. The line is theoretical buy, not the change column.
The change on the top cards is a different pair. It converts the previous close with today’s FX, then subtracts. The percent beside it comes from the international gold reference. That is not the table’s change column, and a TWD difference in the table is not the COMEX percent.
Date and the FX column
The date is the Taipei calendar day of that COMEX close. The table uses the same period as the chart above: past month, 90 days, 1 year, 3 years or 5 years. Money columns are TWD per qian, not USD per ounce and not per gram.
“FX that day” is the USD/TWD rate actually used for the row, shown to three decimals. The site prefers Bank of Taiwan USD spot-sell for the same Taipei calendar day. If that day has none, it uses the nearest prior business day within about 10 calendar days. The header says “that day,” but the rate’s own date can be earlier. If the window has no usable rate, the row is omitted. Today’s rate is not written onto the past, and no rate is invented.
When Bank of Taiwan history is missing, the page may use a public-market fallback (Yahoo TWD=X or FRED DEXTAUS) and say so in the FX note. A fallback is not Bank of Taiwan spot-sell. If any Bank of Taiwan print sits in the window, the latest of those is used; only otherwise does the latest fallback apply. This site does not invent an exchange rate, and it does not turn the rate into a shop or bank trade price.
HOW TO
Read the jewelry daily table from left to right
Match each of the six columns. These steps contain no day’s amount and do not subtract columns into a loss.
- Match the period and the unitThe table uses the same period as the chart. Money columns are TWD per qian, with 1 qian = 3.75 grams, not USD per ounce.
- Buy is that day’s theoretical costThat day’s COMEX close is paired with the row’s FX and rounded to TWD per qian. It is not a shop’s buy price.
- Sell is buy plus about 4%The same row’s theoretical buy times 1.04, then rounded. Making charges and brand are excluded. It is not a shop’s sell board.
- Change subtracts estimated sell onlyCompare with the previous included row’s estimated sell, in TWD per qian, with no percent. The earliest row is a dash. Do not mix it with the live cards or the COMEX percent.
- 999.9 recycle equals that row’s buyThe factor is 1, not 0.9999. 916 and 750 are on the recycling page. Do not subtract estimated sell from this column.
- The FX date can be earlierPrefer Bank of Taiwan spot-sell on the same Taipei day, else the nearest business day within about 10 days. No usable rate means the row is omitted. Do not copy the figures as a board.
Related quote pages
This page only defines the jewelry daily-table columns. Figures are a theoretical reference. It does not provide or invent any day’s TWD amount, exchange rate, shop sell price or recycle bid. Making charges, tax, assay and fees are excluded. Not investment advice. No Product/Offer.
Jewelry daily table FAQ
Why do 999.9 recycle and buy match?
This site sets the 999.9 purity factor to 1, so the column is the rounded theoretical buy. It is not buy times 0.9999, and it is not a shop bid. 916 and 750 are on the recycling page.
Is the table’s change a percent?
No. It is the integer TWD-per-qian gap in estimated sell versus the previous row. The percent on the top cards comes from the international gold reference, not from this column.
Is “FX that day” always that day’s Bank of Taiwan print?
Not always. The same Taipei day is preferred; otherwise the nearest business day within about 10 days. If none is usable, the row is omitted. A labeled public-market fallback is not Bank of Taiwan spot-sell. We do not invent a rate.
Can I treat the table as a jewelry trade price?
No. All six columns are a theoretical conversion. Making charges, brand, assay, melt loss and fees are absent. Confirm any trade in store. This page does not copy any day’s amount.