Buying wholesale freshwater pearls internationally can be frustrating when suppliers use different weight metrics. Japanese suppliers historically quote in Momme, while US buyers think in Ounces, and European manufacturers prefer Kilos. We built this pearl weight calculator so you never have to guess your actual material costs again. Whether you need a quick momme to grams conversion or a complete cost breakdown, this tool handles the math for you.
Wholesale Converter
B2B Pearl Weight & Cost
Chrome Extension: https://chromewebstore.google.com/detail/pearl-weight-cost-convert/pffdckgklnamgpbfjiigaceogfmhephp
Are your wholesale costs eating into your retail margins? Plug your new Price-Per-Gram into our Retail Pricing & Profit Calculator to see your true break-even point.”
What is a Momme and why do pearl suppliers use it?
The Momme (匁) is a traditional Japanese unit of weight used almost exclusively in the pearl and silk industries. Because exactly one Momme equals 3.75 grams, knowing how to convert momme to grams is essential for any jewelry business.
Even though we farm our freshwater pearls in Anhui, China, many old-school trading companies and international pearl auctions still quote bulk lots using Momme. If a supplier sends you an inventory list priced at “$10 per Momme,” you need to know exactly what that means for your bottom line before you wire the money.
Finding your true wholesale pearl prices
A major mistake buyers make is failing to convert their quoted price into a standard baseline, like price per gram or price per kilo. If you are buying 50 kilograms of loose baroque pearls, you cannot rely on quick mental math to figure out your margins.
Our pearl weight calculator solves this. If you select Momme as your input unit and type in a price of $15, the calculator instantly shows your equivalent unit prices below. You will immediately see the momme to grams conversion in real-time, showing that $15 per Momme is exactly $4.00 per Gram, or $4,000 per Kilo. This allows you to accurately compare wholesale pearl prices from different global suppliers apples-to-apples.
Sourcing bulk freshwater pearls directly
Every time a pearl lot changes hands from the farm, to the processor, to the trading company, the price per kilo goes up.
If the equivalent unit prices on your current supplier invoices look too high, you are likely paying unnecessary middleman markups. At Xinye Pearl, we manage our own pearl farms. Because we control the entire process from the water to the warehouse, we offer clear, direct factory pricing on bulk loose pearls.
Use the pearl weight calculator above for your next momme to grams conversion, then contact our sales team to see how much you can save by buying direct from the source.
FAQs
Why do some suppliers still quote in Momme instead of Grams?
The momme is deeply rooted in the history of the Japanese pearl trade. For decades, Japanese Akoya and freshwater pearls set the global standard, so their traditional weighing unit stuck in the industry. Today, most modern Chinese freshwater pearl farms and international buyers prefer grams or kilos. If a legacy broker gives you an old-school quote, simply use our pearl weight calculator to find your true cost.
How many pearls are in one Momme or one Kilo?
It depends entirely on the size and shape of the pearls. Weight is absolute, but the piece count varies drastically. For example, one kilogram of 4mm round pearls contains thousands of pieces, while a kilogram of 12mm nucleated pearls might only contain a few hundred. This is exactly why buying loose pearls by weight is the standard in B2B transactions rather than buying by the piece.
Are drilled pearls and undrilled pearls priced the same by weight?
No. Drilling removes physical material from the pearl, which slightly decreases its total weight. When you compare wholesale pearl prices, half-drilled or fully-drilled pearls will often have a slightly different price per gram than completely undrilled pearls of the exact same harvest quality.
How can I tell if I am actually getting a factory-direct price?
You have to look at the equivalent price per kilo. Many trading companies buy bulk harvests from farms like ours in Anhui, add their markup, and sell to overseas buyers. If you are buying commercial weight (over 5 or 10 kilos) and the supplier cannot provide a significant price break when you do the momme to grams math, you are likely paying a middleman premium.
EN 
JA 
AR 
IT 
ES 
DE 
KO