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Natural Blue Tanzanite vs Kashmiri Blue Sapphire: Which Certified Loose Gemstone Should You Buy?

A head-to-head look at two certified loose blue gemstones in the 9-11 carat range: the cushion-cut Tanzanite at USD 22.27 and the asscher-cut Kashmiri Blue Sapphire at USD 17.64. See where each stone wins and which fits your next jewelry project.

Last updated Aug 17, 2026

If you're shopping the loose gemstones pearls space for a statement blue stone in the 9 to 11 carat range, you're likely weighing two very different cuts and price points. On one side is a Natural Blue Tanzanite in a cushion cut with an EGL certification, listed at USD 22.27. On the other is a Natural Kashmiri Blue Sapphire in an asscher cut with a AAA+ grade and a certification, listed at USD 17.64. Both are described as eye clean, natural, and cut from India, but the way they sit in your budget and your ring design can be quite different.

Quick Verdict

If you want a lower listed price and a slightly larger carat weight range, the Kashmir Blue Sapphire offers a strong starting point at USD 17.64. If you prefer a cushion-shaped tanzanite with a named EGL certification, the Natural Blue Tanzanite at USD 22.27 is the version to consider. Neither is objectively "better" on paper; it comes down to cut style, certification preference, and how much you want to pay.

Comparison at a Glance

ProductListed PricePrice BarKey Differences
Natural Blue Tanzanite Cushion 9-10 Ct Extremely Rare Certified Loose GemstoneUSD 22.27Cushion cut, EGL certification, 9-10 ct
Natural Kashmiri Blue Sapphire Asscher Cut AAA+ 9-11Ct Certified Loose GemstoneUSD 17.64Asscher cut, AAA+ grade, 9-11 ct

Where Each Stone Wins

The Blue Tanzanite wins if you want a cushion cut with a clear "Extremely Rare" label in the title and a certification from EGL. The Kashmiri Blue Sapphire wins if you want a larger weight range (9-11 ct vs. 9-10 ct), the classic step-cut look of an asscher, and a lower listed price by USD 4.63.

Product Notes

Natural Blue Tanzanite Cushion 9-10 Ct Extremely Rare Certified Loose Gemstone

Natural Blue Tanzanite Cushion 9-10 Ct Extremely Rare Certified Loose Gemstone

This tanzanite is a strong option for buyers who want a cushion shape with a softer, rounded silhouette. It carries an EGL certification, so you have a named lab behind the stone. The title calls it "Extremely Rare," and the listed price is USD 22.27. One thing to keep in mind: the seller notes that the product may appear smaller in real life than in the studio images, and that photos are taken under bright lighting. If you prefer a tanzanite with a more traditional brilliant-style shape rather than a step-cut, this cushion is the more sculptural choice.

Natural Kashmiri Blue Sapphire Asscher Cut AAA+ 9-11Ct Certified Loose Gemstone

Natural Kashmiri Blue Sapphire Asscher Cut AAA+ 9-11Ct Certified Loose Gemstone

This sapphire is the more economical of the two based on listed price at USD 17.64, and it gives you a larger carat weight range of 9-11 ct. The asscher cut is a hall-of-fame step cut with a clear, open table, and the title grades it AAA+. It ships with a certification as well. The trade-off is that import duties, taxes, and additional charges are not included, so your final landed cost may be higher than the listed price. Also, like many loose stones photographed in studios, the gem can look brighter and lighter than it does in person.

Final Choice by Use Case

Pick the Natural Blue Tanzanite if you want an EGL-certified cushion-cut stone and the more dramatic price point of USD 22.27 feels comfortable. Pick the Natural Kashmiri Blue Sapphire if you want to spend less upfront at USD 17.64, like the asscher shape, and want the flexibility of the 9-11 ct range.

Products in this article
Natural Blue Tanzanite Cushion 9-10 Ct Extremely Rare Certified Loose GemstoneUSD 22.27View on eBayNatural Kashmiri Blue Sapphire Asscher Cut AAA+ 9-11Ct Certified Loose GemstoneUSD 17.64View on eBay
Natural Blue Tanzanite Cushion 9-10 Ct Extremely Rare Certified Loose GemstoneUSD 22.27View on eBayNatural Kashmiri Blue Sapphire Asscher Cut AAA+ 9-11Ct Certified Loose GemstoneUSD 17.64View on eBay

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