Jun 202012
non certified diamond

If you’ve done any research into buying diamonds you’ve probably heard a lot about the importance of buying a certified stone. This is extremely valid, and let me state that you should ALWAYS ask if the diamond is certified or not. NEVER buy a non-certified diamond from someone you don’t know. (Also read why you should not buy a diamond based solely on the certification)

That being said… there are certain cases where you can get a good price on a non-certified diamond from an honest independent jewelry store.

I’ve listed some criteria for buying a non-certified diamond, and ALL of these things must be clear before you purchase.

  1. You are dealing with a reputable independent jeweler you can trust.
    This is by far the most important criteria to follow. If you don’t know one, ask around! If anything about the store doesn’t seem right, go to the next one! You could lose hundreds or thousands of dollars buying a diamond that is not what the store claimed it to be.
  2. Compare the non-certified diamond with certified diamonds that are graded the same clarity and color.
    If a store is selling a non-certified stone they’ve graded as a SI1-G, compare it with a certified SI1-G (one that is certified by a reputable grading company, preferably GIA). All grading is subjective and there may be slight variances, but you shouldn’t be able to tell a significant difference.
  3. Determine how the stone was graded.
    Any reputable jeweler who has graded a loose diamond they’re selling to you should have someone on staff that has been trained by a well-known diamond grading school, such as the GIA. This should also be the person who writes your appraisal.
  4. Make sure the exact quality of the diamond is stated in writing on an appraisal.
    Also, make sure that the stone is graded in GIA terms (color and clarity scales). Some stores grade based on a scale they’ve created themselves, and if this is the case – do not buy. It should also say NATURAL diamond somewhere on your appraisal. Anyone who sells a clarity enhanced diamond MUST disclose this to you, and I would stay far away from these stones. Read our post on non-natural diamonds.

Let me stress again that it is so important to buy from someone you can trust. The problem is, even if you find out later on the store lied to you, your costs to take them to court will likely come close to or exceed what you paid for the diamond.

The only real (but significant) advantage to buying a non-certified diamond is that you can sometimes get a better price because of this. Who doesn’t want a better price? :)

(One last thing…if the price seems TOO good, this is another red flag – proceed with caution!)

  3 Responses to “The ONLY Way To Buy A Non-Certified Diamond”

  1. I am in the process of trying to have a ring made for my wife for our 25th wedding anniversary. My plan is to use her present diamond( H color, VS1 clarity) that is a .80 carat. I am wanting to buy another .80 diamond and a 1.26 carat diamond. I am going to put the 1.26 in the center and the 2 each .80 on each side of it. I have a very good friend who has been in the jewelry business for 30 years and he gave me the name of a jeweler that has done his work, both repairs and new items for over 25 years. This jeweler is with a family owned company that has been in business for over 40 years. I have been told by my friend that he totally trusts this jeweler and his work is unmatched. I have been to meet with the jeweler and he has priced the ring to me using some diamonds that he has. He has priced the .80 (H, SI1) at 3500 and the 1.26 (G, SI1) at 7000. The owner of the jewelry store where he works appraises the .80 at 4700 and the 1.26 at 10000. My concern is that neither stone is certified and I just wonder where this might jump up to bite me in the future. I have seen the two stones, they are beautiful and I see no inclusions in either stone. The jeweler tells me that if they send it out to be certified it will add $400 to each stone. The jeweler says that he is letting me have these at that price because he owns them personally, not the store, and will make me that deal. He says that if I am not happy, I don’t have to take the ring. He will make the ring from scratch, including molding and carving the platinum band. The diamonds he has are just as beautiful, if not more, than the present .80 diamond my wife presently has. If the owner/jeweler of the store gives me a written appraisal listing the size, color, clarity, etc. of all the diamonds, will I be able to insure that ring with my homeowners insurance? Also, please advise of any other precautions that I should take in this matter. I really think everything is on the up and up, and my friend assures me that he has never had any questionable activity from this store in his 25 years of dealing with them. I am not buying this ring for resale or an investment. It will probably be handed down from my wife to my daughter in years to come.

  2. Hi Larry, thanks for you inquiry. First of all, I would recommend closely examining the stones next to one another to make sure the cuts are well matched (they sparkle the same) and the colors are not off.

    I’m going to assume these are Round diamonds. If so, there are a couple things that are raising a flag with me. If the stones are what he says they are, and are really well cut, he’s hardly (if at all) making any money off of them. Depending on when he bought them, he could be LOSING money in today’s market. This is the biggest red flag for me. Second, it doesn’t cost $400 to get a stone certified (with the GIA). The prices are listed right on their website, and any consumer can send a stone in to get it certified. Regardless, with a written appraisal you should be able to insure it with your homeowners insurance.

    Apologies for the late response, you caught me on vacation last week. Good luck.

  3. If a diamond is a faint yellowish tint but a beautiful clear cut, should I still be interested?

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