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Gemstone - minimum size limit?


#1

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.


#2

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


#3

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.


#4
   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


703-593-4652