bluish green aquamarine of high quality
You can get an online appraisal at www.gemval.com if you have all of the information regarding cut, color, clarity and carat weight. I have 15 ct aquamarine that appraised for over $1200 on this site.
The value of a flawless 0.75 carat diamond can vary greatly depending on factors such as cut quality, color, and clarity. However, as a rough estimate, you can expect to pay anywhere from $2,000 to $6,000 for a high-quality flawless 0.75 carat diamond.
The value of a 2.5 carat opal can vary significantly depending on factors such as the quality, color, clarity, and origin of the stone. In general, opals can range in price from a few dollars per carat for lower-quality stones to several hundred dollars per carat for high-quality stones. It is recommended to have the opal appraised by a professional to determine its exact value.
The value of a 63-carat emerald cut amethyst can vary significantly based on factors such as color, clarity, cut quality, and market demand. Typically, high-quality amethyst ranges from $2 to $10 per carat, which would place a 63-carat stone in the range of $126 to $630. However, exceptional specimens with deep color and high clarity could command higher prices. It's advisable to consult a gemologist or appraiser for a precise valuation.
Gem silica can range in price according to the quality/cut/color/origin of the material. Prime examples (cabochons) of high quality collectible gem silica can reach $50-200 / carat.
Santa Maria aquamarine is considered one of the most valuable and sought-after varieties of aquamarine due to its deep blue color and high clarity. Its rarity stems from the limited availability of the gemstone, especially in larger sizes with top-quality characteristics. As a result, Santa Maria aquamarine can command high prices in the gemstone market.
Given the high number of diamonds limited by the low carat weight in your question, the cost of the diamonds might not be so much a factor as the quality of the setting into which they are mounted. The clarity quality that you describe wouldn't be so visible in diamonds weighing less than a quarter carat (.25 carat) each.
The value of purple amethyst varies widely based on factors such as quality, size, and origin. Typically, it can range from $20 to $100 per carat for high-quality stones, while lower-quality or smaller pieces may be worth less. Exceptional specimens, particularly those with deep color and clarity, can command prices upwards of $200 per carat or more. Overall, market trends and demand also play a significant role in determining its worth.
The value of 1 carat of garnets can vary widely based on factors such as quality, color, cut, and clarity. On average, garnets can range from $50 to $500 per carat, with some rare or high-quality pieces fetching even higher prices. It's recommended to consult a jeweler or gemologist for a more accurate valuation.
The value of a half-carat emerald can vary significantly based on factors such as clarity, color, cut, and origin. On average, a half-carat emerald may range from $250 to $1,500 or more, with high-quality stones commanding higher prices. It's essential to consider these factors and consult with a gemologist or jeweler for an accurate appraisal.
The value of a 10 carat blue topaz can vary depending on factors like color, clarity, cut, and origin. On average, prices can range from $50 to $300 per carat for commercial grade stones, while high-quality stones can fetch significantly higher prices. It's recommended to have the stone professionally evaluated to get an accurate estimate of its value.