Open Table
When selecting a diamond, one of the lesser-known but important factors to consider is the “Open Table” grade. This parameter is part of an advanced assessment that evaluates the size and alignment of the diamond’s table (the flat facet on the top) in relation to its overall structure and symmetry. Understanding our Open Table grades, including TO0, NV, TO1, TO2, NA, and NO OPTA, can help you choose a diamond that meets your expectations for brilliance, fire, and overall beauty. When ticking the Gemayel Recommended box here do not fill your open table settings as the filters set already filter out lower quality open table results.
- TO0 (Table Optimal 0) : Represents an ideally proportioned table size, perfectly aligned with the diamond’s symmetry and facet arrangement. Diamonds with a TO0 grade maximize light return for exceptional brilliance and fire.
- NV (Not Visible) : Indicates that any deviations in table size or alignment are not visible or significant enough to affect the diamond’s appearance under standard viewing conditions.
- TO1 (Table Optimal 1) : Suggests a very slight deviation from the ideal table size or alignment. The impact on light performance is minimal, and such diamonds often display high levels of brilliance.
- TO2 (Table Optimal 2) : Denotes a moderate deviation in table size or alignment, which may slightly affect the diamond’s light performance. Diamonds with a TO2 grade can still exhibit good brilliance but may not reach the optimal levels of a TO0 or TO1 grade.
- NA (Not Applicable) : Used for diamond shapes or cuts where traditional table size and alignment metrics do not apply or cannot be accurately assessed due to the diamond’s unique characteristics.
- NO OPTA (No Optimal Table Alignment) : Indicates significant deviation from the ideal table proportions or alignment, potentially impacting the diamond’s light performance and visual appeal. Diamonds with a NO OPTA grade may exhibit reduced brilliance and fire.
When selecting a diamond, consider the following guidance related to Open Table grades:
- Prioritize Higher Grades for Maximum Brilliance : If optimal sparkle and brilliance are your main criteria, aim for diamonds with TO0 or TO1 grades, as these are likely to exhibit superior light performance.
- Consider Your Budget : Diamonds with a TO0 grade may command a premium price due to their exceptional light performance. TO1 and TO2 grades can offer a balance between cost and visual quality, providing good brilliance at a potentially lower price point.
- Seek Professional Guidance : Gemayel trusted jewelers and gemologists are ready to provide valuable insights into how Open Table grades impact a specific diamond’s beauty and value, helping you make an informed decision. Book your call here!
FAQ's
While not as widely recognized as the 4Cs (Cut, Color, Clarity, Carat), the Open Table grade is an important aspect of a diamond’s cut quality and can influence its light performance and visual appeal.
Open Table grading is most relevant to round brilliant diamonds and certain fancy shapes where table size and alignment play a significant role in light performance. For some unique shapes, the NA (Not Applicable) grade may be used.
Not all grading reports detail Open Table grades, as this is a more specialized aspect of diamond assessment. It may be found in advanced reports from certain labs or included in additional documentation from some sellers.
This depends on your personal preferences and budget. A TO0 grade indicates optimal light performance, which can significantly enhance a diamond’s brilliance and fire. If these qualities are paramount to you and within your budget, a TO0 grade may be worth the investment.
Open Table grades offer valuable insights into a diamond’s cut quality and potential for brilliance. By understanding these grades and considering them alongside the traditional 4Cs, buyers can select a diamond that truly meets their desires for sparkle and aesthetics. Whether you prioritize maximum brilliance or are looking for value within a budget, considering Open Table grades can help you make a more informed and satisfying diamond purchase. Start the selection journey to your perfect stone here !
