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$48.00 USD
Price
12950
9

RUBY STONE FROM MADAGASCAR 2.8 CTS [PS139 ]

SKU
Dimensions (mm)
x x mm
Weight (cts)
Certified Gemstones
No
Colours

IMPORTANT NOTE: This item contains fissure filled cavities that may contain glass, cobalt, or other materials. Due to the presence of these materials, this item should be referred to as a composite stone.

                                                                              sedagems's Logo

SPECIALIZING IN PINK SAPPHIRES FROM MADAGASCA

                                                                                                             

 

SEDAGEMS (AUSTRALIA) HS BEEN APPOINTED AS AN AGENT FOR A MADAGASCAN MINING COMPANY                                                                                    

 

 MADAGASCAN RUBY

Birthstone for july 

This material was mined in madagscar and glassed filled treated as below.The colour is a rich ruby appearance.If this was a natural stone with this colour it would be valued in the hundreds of dollars.Ideal ring size.

CABACHONED

 WEIGHT 2.8 CTS

SIZE 10 X7.8 X3 MM

 

 

LEAD GLASS TREATMENT 

Filling the fractures inside the ruby with lead glass dramatically improves the transparency of the stone, making previously unsuitable rubies fit for applications in jewelry. The process is done in four steps:

  1. The rough stones are pre-polished to eradicate all surface impurities that may affect the process
  2. The rough is cleaned with hydrogen fluoride
  3. The first heating process during which no fillers are added. The heating process eradicates impurities inside the fractures. Although this can be done at temperatures up to 1400°C (2500°F) it most likely occurs at a temperature of around 900°C (1600°F) since the rutile silk is still intact
  4. The second heating process in an electrical oven with different chemical additives. Different solutions and mixes have shown to be successful, however mostly lead-containing glass-powder is used at present. The ruby is dipped into oils, then covered with powder, embedded on a tile and placed in the oven where it is heated at around 900°C (1600°F) for one hour in an oxidizing atmosphere. The orange colored powder transforms upon heating into a transparent to yellow-colored paste, which fills all fractures. After cooling the color of the paste is fully transparent, that dramatically improves the overall transparency of the ruby.

Shipping provider Shipping to Australia Shipping to rest of world
FedEx $12.00 / 3 days $39.00 / 10 days
Australia
FedEx is discounted to $12.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $39.00 on orders with 2 or more items
Registered Shipping $9.00 / 7 days $16.00 / 21 days
Australia
Registered Shipping is discounted to $9.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $16.00 on orders with 2 or more items

sedagems
sedagems
MEMBER OF THE  [ICA] INTERNATIONAL COLOURED STONE ASSOCAITION AND PRESIDENT OF THE OPAL ASSOCIATION. PAUL SEDAWIE IS A FORMER OPAL MINER WHO NOW TRAVELS AROUND AUSTRALIA AND THE WORLD COLLECTION RARE AND INTERESTING GEMS TONES AND FOSSILS.ALL STOCK HAS A MONEY BACK GUARANTEE We have a retail shop/museum at the Gold Coast Opal and Gem Centre 25 surfers av mermaid waters Qld Australia .4218 open mon to sat 10 to 5
Mermaid Waters, Australia
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8.00%
Coupon code GEMSONSALE
Valid Until
21st Apr 2024

Audit

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Shipping Details

Shipping:
$3.00 21 days via Registered Shipping
Ships from:
Australia

Payment Options

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This seller adds 10.00% tax to transactions in Australia.

Overview

Listing Type : Standard
Product ID : 241919
Starts : 14th March 2024 06:00 pm PDT
* All prices are in USD