What is Diamond BGM? What You Need to Know Before Choosing a Diamond!

What is BGM?

BGM is a common abbreviation in the diamond industry, representing Brown (brown), Green (green), Milky (milky white) .

• Brown (brown tone) : Diamonds may have a light brown or dark hue due to trace elements or internal structure.
  

• Green (green tone) : Diamonds may exhibit a greenish base color due to natural radiation or elemental influence.
  

• Milky (milky/opaque) : Diamonds appear less transparent, as if there is fog, affecting the fire and sparkle.
  

Simply put : Diamonds with BGM are like having an extra filter on the lens, looking less brilliant and somewhat "hazy."

Why pay attention to BGM?

Although BGM is not listed on certificates, it is an important hidden factor affecting the "aesthetic" and "value" of diamonds.

• Visual impact : Even if a diamond has high color and clarity on paper, once it has BGM, it may look "dirty" and "dull."

• Value impact : Diamonds with BGM generally have a much lower value in the industry compared to pure diamonds.

• Wearing effect : When purchasing wedding rings or important gifts, BGM can cause diamonds to lose their vitality under sunlight and artificial light.

How to avoid buying BGM diamonds?

1. Don't just look at the certificate!
   Certificates from GIA, IGI, etc., do not indicate BGM; you need to see the actual item or request a high-definition magnified video.
   
   
2. Pay attention to the diamond's transparency
   Take the diamond into natural light; is it bright? If it has a hazy appearance, it may be Milky.
   
   
3. Compare more
   Place diamonds of the same grade (color, clarity, cut) together for comparison, and you will quickly see which ones have BGM.
   
   
4. Find a trustworthy seller and choose DIABOND diamonds!
   Diamonds sold by DIABOND are guaranteed to be BGM-free, and all diamonds purchased from DIABOND are professionally screened to help you avoid problematic diamonds, saving you the time of comparison and ensuring you don't have to worry about buying BGM diamonds.

Diamonds without BGM

• No BGM : Crystal clear, sparkling, and at a glance, they look "clean and bright."

Conclusion

When selecting diamonds, you should not only look at the "4C" (carat, color, clarity, cut) but also pay attention to the "invisible killer"— BGM .
Remember this phrase:

👉 A good diamond is not just one with a certificate; it also needs to be "seen to be believed" ✨

If you are buying a diamond for the first time, it is advisable to consult a trustworthy seller and compare in person to avoid spending a lot of money on a diamond that has a "hazy" appearance.