luv*oldmine
Shiny_Rock
- Joined
- Jun 21, 2010
- Messages
- 103
kenny said:I've been looking at blue sapphires recently.
It is astonishing how much the price can vary depending on whether it is natural/synthetic, treated/not treated and the origin.
When agreeing to a price I would assume the worst until a reputable lab grades it otherwise.
That means I'd find out what a synthetic 2.5 ct goes for and pay no more than that.
luv*oldmine said:This ring was inherited. Whether the stone is of natural or synthetic origin is irrelevant to me. Due to the fact that: Memories are more important than value. Thank you all for your responses and for your Kind Words!
tourmaline_lover said:luv*oldmine said:This ring was inherited. Whether the stone is of natural or synthetic origin is irrelevant to me. Due to the fact that: Memories are more important than value. Thank you all for your responses and for your Kind Words!
Well, if you want a value for insurance purposes, I highly recommend sending it to a reputable lab that can test for diffusion, based on that, a QUALIFIED appraiser can give you a replacement value. You might just want to know how much it's worth so you can put it in a safety deposit box for safe keeping.
kenny said:Personally, even if I was not going to insure it I'd still be curious whether the stone was worth closer to $2 or $200,000 but that's just me.
luv*oldmine said:This week, I will start searching for a lab.
Chrono said:I personally prefer the AGL prestige report over GIA as they provide far more information. GIA only gives you the basic (treatment and colour description), but the AGL prestige report will also provide most probable origin, colour assessment (in addition to colour description) and colour quality. It is the only lab so far which actually dares give an opinion on the quality of the gemstone.
luv*oldmine said:I'm glad to know that! Sure, It's from the 1920's (French maker's mark--lozenge, dog's head and eagle's head (grandma & great grandma's stuff)). Again, after all the advice received from the wonderful members of this forum, I still want to have it examined by a reputable lab agency like GIA or AGL so that I can obtain a fashionable document which is current. Thanks!
luv*oldmine said:Chrono said:I personally prefer the AGL prestige report over GIA as they provide far more information. GIA only gives you the basic (treatment and colour description), but the AGL prestige report will also provide most probable origin, colour assessment (in addition to colour description) and colour quality. It is the only lab so far which actually dares give an opinion on the quality of the gemstone.
I have a green diamond which I purchased a while back from Europe but it has not yet been examined by a lab. Do you think AGL is a better choice for coloured diamond?
tourmaline_lover said:The premier lab for colored diamonds is GIA. Unfortunately it is very difficult o near impossible to determine if a green diamond is natural in color. That is because the green is caused by the earth's natural radiation while the diamond was forming under the mantle. Enhanced green diamonds are also colored by man made radiatiation and the radiation stains do not discern natural vs artificial coloration. The GIA prefers grading green diamonds in the rough as a result of this man made process of irradiation. The rough is not exposed to radiation (at least not that I know of).