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Gemstone - minimum size limit?

Hi, I’m a gem collector and I have a question regarding gem size.
I would like to know is there a minimum size limit to cut a gem,
such as diamond? Thanks for your attention a.c.

Hi Bonita, Generally the smallest round brillant diamond sold in
the US is 1 mm diameter (.005ct) stone. The smallest size I’ve
seen for baguettes is 1.25 x 1 mm (.010ct). Smaller stones may be
available by special order.

Dave

It’s unclear exactly what your question is. The capability
exists to cut diamonds as small as .005 ct. But most of us aging
jewelers need about 3 loupes to see a stone that small. Most
colored stones won’t ever be cut that small because there is no
call for them. If there is no demand no one wants to cut them.

   Generally the smallest round brillant diamond sold in the US
is 1 mm diameter (.005ct) stone. 

Years ago, I worked at a place that stocked 1/4 pointers
(0.0025ct). The shop foreman coughed into the paper one time. Was
picking up stray stones for a couple of years.

Bruce D. Holmgrain
Maryland’s first JA Certified Senior Bench Jeweler
@Bruce_Holmgrain


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