Color: d from pure white to light yellow.

Cleanliness: LC (if) vvs (vvs 1, vvs2) vs (vs 1, vs2) si (si 1, si2) p (p 1, p2, p3) cleanliness from pure to imperfect, international.

Cutting: from perfect to good cutting

Size: 1.00 carat 0.3 carat 0.0 1 carat diamonds from large to small.

The jewelry appraisal agency stipulates: the standard color, clarity and cut of diamonds with 20 points or more. Diamonds with a score below 20 are allowed to be unmarked, cleaned and cut.

Some merchants will require diamonds with a color clarity of less than 20 points when making appraisal certificates.

Just make sure that your 6-cent diamond is a natural diamond and have an appraisal certificate.

As for your 30-cent diamond, generally speaking, it needs to be marked with detailed color clarity. If there is no label here, you can ask the salesperson to show you the instrument, and the color can be seen by the naked eye. The sharpness is cut with a magnifying glass (10 times) and a cutting mirror. Personally, if the diamond certificate with a score of more than 30 points is not marked with color, clarity and cut, then this grade should be relatively poor.

Personally think the price is reasonable. From the price point of view, the grade of this diamond should not be high, and the purity should be SI. Now this kind of diamond is sold more, because it is affordable, you can consider buying it.