THE PREMIER MARKETPLACE FOR REAL GEMS
$14.00 USD
價格

97.15 CTS ORTHOCERAS POLISHED SPECIMEN

存貨單位
尺寸(毫米)
x x mm
重量 (cts)
Certified Gemstones
顏色

 

Patrik's Minerals & Lapidary  

 

POLISHED ORTHOCERAS SPECIMEN

specimen has a nice domed polished face , natural unpolished back 

WEIGHT : 97.15 CTS 

SIZE  MM:  50 x 30 x 9

( 6 MM IS APPROX 1/4 INCH )

CODE : G   3995

 Orthoceras was an ancient mollusk that lived more than 400 million years ago. The name means straight horn, referring to the characteristic long, straight, conical shell. The preserved shell is all that remains of this ancestor of our modern-day squid.

  The soft body lived in the last open-ended segment at the large end of the conical shell. As the body grew and the housing segment became too small, a dividing wall, called the septa, grew to separate the old chamber from the new one. The differences in the composition of these shell parts allowed for differences in fossilization so the parts can be seen.   The siphuncle is a tube that runs the entire length of the shell, through each of the chambers. This tube had two functions. Once filled with water, the nautiloid could force the water out, propelling itself backward with a kind of jet propulsion. By releasing the water and leaving air space, the tube could serve as a bouyancy device allowing the animal to rise and lower itself to different depths.  The siphuncle is the line running down the center from head to tail. The septa are the short curved lines that run across or side to side.  These straight shelled nautiloids ranged in size from less than a centimeter to more than 14 feet long!


運輸商 運送至:國家 運送到世界其他地區
FedEx $12.00 / :幾天天 $39.00 / :幾天天
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $12.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $39.00
Registered Shipping $9.00 / :幾天天 $15.00 / :幾天天
:國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $9.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $15.00

patriksbeadsandgems
patriksbeadsandgems
:城市,國家
已驗證
:總反饋

  • ginagee
    ginagee
    積極的

    These are perfect for my purpose. Fast delivery.well packed too.

  • ginagee
    ginagee
    積極的

    Lovely colour! Genuine aged item. Very well packed and fast delivery.

  • sohel1110
    sohel1110
    積極的

    Paid and shipped - no feedback left after 100 days

審計

Gemstone Sheriff計劃允許我們的會員請求對任何產品進行審核,該審核由獨立的 Gemologist 人員完成,該資格人員評估商品描述和圖片的準確性。

送貨細節

船運:
$15.00 :通過 Registered Shipping 計算天數
發貨自:
Australia

付款方式

  • paypal
  • stripe
該賣家在 Australia 的交易中添加 10.00% 稅。

概述

列表類型 : Standard
產品編號 : 368677
開始 : 11th November 2024 03:51 pm PST
* 所有價格均以:貨幣為單位