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#73321, Apophyllite with minor
Goethite, Millington Quarry, New Jersey (lc) $225
Comparing the size of minerals (or diamonds) based on weight
is misleading and frequently confusing. For example a 10 carat diamond is
not five times the size of a 2 carat diamond.
For the sake of illustration, let's assume the following diamonds are
cubic form. A 2 carat diamond might measured 7x7x7 mm which equals 343 cubic
millimeters. 343 mm3 / 2 carats = 171 mm3 per carat.
A 10 carat diamond then equals 1710 mm3 (171 mm3 x
10) which means the dimensions will about 12x12x12 mm (the cube root of 1710).
So you can see the larger diamond is 5 times the weight (2 vs. 10 carats)
but not even twice the size (7x7x7 mm vs 12x12x12 mm).
So either learn to do the math when comparing minerals and diamonds or ignore
the weight and focus on the actual MEASURED dimensions.
John Betts, 10/27/2020
Click here to read past news and
commentaries...
Customer Feedback:
"Just an FYI. Received my 7 specimen mineral order today for the very reasonable
price of $240, after your multi specimen discount. That is a little more
than $30 per specimen on average. While these were all small miniatures,
I thought the quality was excellent from a lack of damage perspective, uniqueness
for location crystal morphology perspective. (and the price was great for
that). Any beginner or moderate-skilled collector would greatly benefit from
the addition of these specimens. I consider myself an advanced collector,
and this suite really made me happy and hit the mark with me for what they
are in size. I have spent very much more $$$ on “high quality”
larger specimens. These in their own way, in my opinion, hold their own in
the collection for reasons mentioned. Maybe I am over the top on this, but
I very much like what I received. Thanks. Dan M."
Click here to see other comments about
this site by customers. Also add your feedback...
Pledge to My Customers:
Customer satisfaction is my primary goal. I pledge:
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New minerals will be added to this site every week.
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All minerals offered will be naturally crystallized specimens - no fakes,
no dyes, no irradiation, no crystals glued on matrix.
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Only the exact item pictured on the site will be shipped - no substitutes.
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Photographs will accurately represent each item - no exaggeration, enhancement
or retouching flaws.
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Mineral species and localities will be accurately listed on labels with each
specimen.
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All items will be shipped via US Postal Service, usually the next business
day after the order is finalized.
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Each mineral will be individually wrapped and carefully packaged to prevent
damage during shipping.
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All historic labeling, if available, will be included with each mineral.
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Returns are gladly accepted. No questions asked, no explanation necessary.
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All customer information will be kept confidential and never shared or sold.
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I will continue to freely share my knowledge with others and contribute
to the study and appreciation of minerals.
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All mineral specimens have a lifetime guarantee: if the mineral species was
incorrectly identified, I will refund the cost of the original purchase &
shipping, the cost return shipping and the cost for testing.
John H. Betts, owner
Mineral dealer since 1989, mineral collector since 1967
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