1. Scarcity: the output of deep-sea whale jade sapphire agate is less, and the scarcity is higher. Scarcity usually has a positive impact on the value of gems.
2. Color and purity: the color of deep-sea whale jade blue crystal agate should be blue or blue-green, with high purity and transparency. Gems with high color saturation and purity are usually of higher value.
3. Cutting and polishing: The quality of cutting and polishing a gem will also have an impact on its value. Accurate cutting and polishing can show the color of gemstones and enhance their ornamental value.
4. Size and weight: The size and weight of a gem will also affect its value. Generally speaking, the large-size and heavy-weight deep-sea whale jade sapphire agate is relatively rare, so it may be of high value.
It should be noted that the value of gemstones is determined by market supply and demand and buyers' preferences, so it may be affected by market changes and personal evaluation. If you own a deep-sea whale jade sapphire agate, you'd better consult a professional gemstone appraiser or jeweler to get an accurate evaluation and valuation.
I hope the above information is helpful to you. Please feel free to ask any other questions.