SAPPHIRE & RUBY HEAT TREATING SERVICE [CORUNDUM HEAT TREATMENT]
WHY HEAT TREATMENT NEEDED IN SOME SAPPHIRES and RUBIES ?
To improve the Color and to bring Brilliance [Improve Clarity] of the Rubies and Sapphires... Certain type of Origins of Sapphire and Rubies do not give 100% positive result on heat treatment always. Today’s Market you find 90% of Sapphires are Heated in traditional method to improve the color and clarity. WHAT DOES Heat treatment do to the Sapphires & Rubies.. ? Certain type of un-dissolved natural impurities[Chemical elements] which is presented in the natural rough stones[corundum’s]can be dissolve by very high heat and could turn them to improve color & to open the crystal of the gems in to a transparent gem instead of semi - transparent, translucent & in some occasion translucent to opaque type of gems.Mostly Darkish-Blue Sapphire are unable to change in to lighter color by heat Treatment but Sapphire with lighter color or colorless [ with slight presence of un-dissolved chemical elements being in gemstones, such as Geuda ] can be improved by treatment [ color and clarity ]. Most Sapphire rough coming out of USA mines [ Montana ], no need to do pre-shaping or trimming [to remove certain type of inclusion to avoid cracking, shattering in high heat ]. Crystal structure formation on Montana Sapphire allows us to heat treat them as it is without pre-shaping, most of Other origins need to be pre-shaped & trimmed[removing certain type of inclusion prior to treatment to avoid cracking and shattering] Further pre-shaping [removing certain type of inclusion], we need to charge a small fee. In pre-forming your rough stones will loose some weight . If you are not family or do not know how to figure-out the out come of the Heat Treatment..... its advisable to Heat-Treat a small Quantity like 50 odd carats[10 grams]To get an idea of your rough stones before going on to larger quantity.
WE COULD HEAT TREAT YOUR SAPPHIRES, RUBIES AND FACET THEM TO HIGH-QUALITY STANDARD [ DIAMOND STANDARD CUTTING ]
CORUNDUM HEAT TREATMENT RATES
WEIGHT OF THE PARCELPRICE PER CATAT US DOLLARS OVER 50 CARATS or LESS $3.50/CT /MIN ORDER $175 OVER 100 CARATS LOTS $2.50 PER CARAT OVER 150 CARATS LOTS $2.00 PER CARAT OVER 250 CARATS LOTS $1.50 PER CARAT OVER 500 CARATS LOTS $1.25 PER CARAT OVER 1000 CARATS LOTS $0.68 PER CARAT 2000 - 5000 CARATS LOTS $1147 PER PARCEL