*Material: Rhodochrosite
*Shape: Smooth Round
*Strand Length: 15.5 inches (all lengths are an approximation). long
*Pieces per strand: Please refer below for sizes and count. All pieces are approximate pieces.
Round and Faceted Round
-4mm: 91 pieces
-6mm: 64 pieces
-8mm: 48 pieces
-10mm: 38 pieces
-12mm: 32 pieces
-14mm: 28 pieces
Roundel and Faceted Roundel
-4mm: 142 pieces
-6mm: 99 pieces
-8mm: 80 pieces
-10mm: 62 pieces
Gemstone Facts
Aquamarine (from Latin: aqua marina, "water of the sea") is a blue or turquoise variety of beryl. It occurs at most localities which yield ordinary beryl. The gem-gravel placer deposits of Sri Lanka contain aquamarine. Clear yellow beryl, such as that occurring in Brazil, is sometimes called aquamarine chrysolite.[citation needed] The deep blue version of aquamarine is called maxixe. Maxixe is commonly found in the country of Madagascar. Its color fades to white when exposed to sunlight or is subjected to heat treatment, though the color returns with irradiation.
The pale blue color of aquamarine is attributed to Fe2+. The Fe3+ ions produce golden-yellow color, and when both Fe2+ and Fe3+ are present, the color is a darker blue as in maxixe. Decoloration of maxixe by light or heat thus may be due to the charge transfer Fe3+ and Fe2+.[9][10][11][12] Dark-blue maxixe color can be produced in green, pink or yellow beryl by irradiating it with high-energy particles (gamma rays, neutrons or even X-rays).[13]
In the United States, aquamarines can be found at the summit of Mt. Antero in the Sawatch Range in central Colorado. In Wyoming, aquamarine has been discovered in the Big Horn Mountains, near Powder River Pass. In Brazil, there are mines in the states of Minas Gerais, Espírito Santo, and Bahia, and minorly in Rio Grande do Norte. The mines of Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine.
The largest aquamarine of gemstone quality ever mined was found in Marambaia, Minas Gerais, Brazil, in 1910. It weighed over 110 kg, and its dimensions were 48.5 cm (19 in) long and 42 cm (17 in) in diameter.[14] The largest cut aquamarine gem is the Dom Pedro aquamarine, now housed in the Smithsonian Institution's National Museum of Natural History.[15]
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Hole Sizes (Most beads...NOT ALL):
4mm: about 0.5 to 0.6mm
6mm, 8mm, 10mm, 12mm: about 1mm
NOTE: THESE HOLE SIZES APPLY TO MOST BEADS BUT NOT ALL OF THEM.
PLEASE NOTE: We will not reimburse for the following issues:
- If the name on the price tag does not match name of in the listing. This does not mean the wrong item is sold or is misrepresented.
- We will not accept a return if the hole size of a bead does not fit your string or if the hole size is too small or too large. Bead hole size is not grounds for return or reimbursement.
Please accept this and all other policies before purchasing.
Please read and accept our return policy before purchasing.
Sizes for all items is an approximation.
All sizes and measurements are an approximation. Will not compensate for size variations.
PLEASE NOTE: All stated lengths are an approximation. We will not issue a refund for strands that are one inch short.
If an item is returnable, buyer is responsible for return postage costs and any loss in value if an item isn't returned in original condition.
Buyer is responsible for return postage costs and any loss in value if an item isn't returned in original condition.
