# Natural Blue Sapphire 0.58 Ct Round Cut Loose Gemstone | Heat Treated September Birthstone **Natural Blue Sapphire weighing 0.58 carat, featuring a round cut, pastel-to-sky blue colour and heat treatment, offered as a loose gemstone for custom jewellery and gemstone collections.** This natural blue sapphire weighs 0.58 carat and displays a soft pastel-to-sky blue colour. Its round cut offers balanced brilliance and versatility, making it suitable for custom engagement rings, pendants, necklaces, and other bespoke jewellery designs. As a loose gemstone, it provides flexibility for a wide range of jewellery settings. ### Quick Summary - **Gemstone:** Natural Blue Sapphire - **Weight:** 0.58 Carat - **Shape:** Round Cut - **Colour:** Pastel Blue / Sky Blue - **Treatment:** Heat Treated - **Clarity:** VS - **Birthstone:** September - **Certification:** Included Blue sapphire is a variety of natural corundum valued for its durability, colour stability, and long-standing use in fine jewellery. Ranking 9 on the Mohs hardness scale, sapphire is suitable for jewellery intended for regular wear when professionally set. As the birthstone for September, blue sapphire is traditionally associated with wisdom, loyalty, and sincerity. Its enduring popularity has made it one of the most recognised coloured gemstones used in jewellery worldwide. ### Gemstone Specifications - **Gemstone:** Natural Sapphire - **Species:** Natural Corundum - **Variety:** Blue Sapphire - **Shape / Cut:** Round - **Clarity:** VS - **Weight:** 0.58 Carat - **Colour:** Pastel Blue / Sky Blue - **Measurements:** 4.80 × 3.00 mm - **Treatment:** Heat Treated - **Birthstone:** September ### Certification & Authenticity This sapphire includes a certificate issued by an authorised gemologist confirming its identity as a natural blue sapphire. **Seller Notes:** Crystal inclusions are visible under magnification. These characteristics are commonly found in natural gemstones and are consistent with natural formation. Minor colour variation may appear under different lighting conditions due to natural colour zoning within the gemstone. ### Jewellery Applications This gemstone is sold loose and is not supplied as a finished jewellery item. - Custom Engagement Rings - Solitaire Ring Designs - Pendants and Necklaces - September Birthstone Jewellery - Custom Fine Jewellery Projects - Gemstone Collections Custom jewellery services are available in gold, rose gold, white gold, silver, platinum, and diamond-accented settings. ### Why Choose This Gemstone? Natural blue sapphires are valued for their durability, attractive colour, and versatility in jewellery design. Their resistance to everyday wear and timeless appearance make them a popular choice for custom jewellery and meaningful birthstone gifts. ### Explore Related Collections Browse related selections and educational resources: [Blue Sapphire Collection](https://www.nashgems.com/collections/blue-sapphire-gemstones) | [Natural Sapphire Collection](https://www.nashgems.com/collections) | [All Gemstones](https://www.nashgems.com/collections/all) | [Ready-to-Wear Jewellery](https://www.nashgems.com/collections/sapphire-gemstone-jewelry-rings) | [Contact Us](https://www.nashgems.com/pages/contact) | [Gemstone Education Articles](https://www.nashgems.com/blogs/gemstone-articles) ### Shipping & Returns Worldwide shipping is available with tracking and insurance included. Orders are dispatched from Sri Lanka. Buyers are responsible for applicable customs duties or import taxes. Returns are accepted according to our published return policy. ### Frequently Asked Questions #### Is this a natural blue sapphire? Yes. This gemstone is identified as a natural blue sapphire. #### Has this sapphire been treated? Yes. This sapphire has undergone heat treatment. #### Does the sapphire include certification? Yes. A certificate from an authorised gemologist is included. #### Can this gemstone be used in an engagement ring? Yes. Its durability and round cut make it suitable for custom engagement ring designs. #### Is this sold as a loose gemstone? Yes. This sapphire is sold loose and is not supplied as a finished jewellery item. ## Details - **Price:** 345.0 USD - **Vendor:** NASHGEMS - **Type:** blue Sapphire - **Tags:** anniversary ring, astrological gemstone, australian sapphire, Australian sapphire direct, Australian sapphire earrings, Australian sapphire engagement ring, Australian sapphire engagement rings, Australian sapphire for sale, Australian sapphire jewelry, Australian sapphire loose, Australian sapphire loose gemstones, Australian sapphire meaning, Australian sapphire necklace, Australian sapphire price, Australian sapphire price per carat, Australian sapphire ring, Australian sapphire rings, Australian sapphire rough, Australian sapphire stone, Australian sapphire value, Benefits of wearing blue sapphire, Best place to buy Loose sapphire, birthday ring, birthstone, birthstone ring, blue sapphire, blue sapphire and diamond ring, blue sapphire benefits, blue sapphire bracelet, blue sapphire earrings, blue sapphire engagement rings blue sapphire necklace, blue sapphire gemstone, blue sapphire jewelry, blue sapphire meaning, Blue sapphire meaning and symbolism, blue sapphire price, blue sapphire ring, blue sapphire ring with diamonds, Blue sapphire spiritual meaning, blue sapphire stone, blue sapphire stud earrings, blue sapphire wedding anniversary, blue sapphire wow classic, Buy high quality Loose sapphire, Buy loose sapphire stones, ceylon sapphire, cluster ring, Different types of blue sapphire, engagement ring, gemstone, gemstone jewellery, gemstone ring, Genuine Montana sapphire jewelry, handmade jewellery, handmade ring, healing sapphire, jewellery, jewelry, Loose blue sapphire, Loose emerald cut sapphire, loose gemstone, Loose gemstones, Loose Montana sapphire, loose sapphire, Loose sapphire for sale, Loose sapphire gemstones, Loose sapphire gemstones for sale, Loose sapphire price, Loose sapphire stone, Loose sapphire stones, Loose sapphire stones for sale, Loose sapphire wholesale, mermaid sapphire ring, montana, montana sapphire, Montana sapphire colors, Montana sapphire earrings, Montana sapphire engagement ring, Montana sapphire eternity band, Montana sapphire jewelry, Montana sapphire loose gemstones, Montana sapphire meaning, Montana sapphire mine, Montana sapphire necklace, Montana sapphire raw, montana sapphire ring, Montana sapphire value, Montana sapphire wedding band, Montana sapphire Wikipedia, Montana sapphires for sale, Most expensive blue sapphire, Natural Loose sapphire, pastal blue sapphire, peacock sapphire ring, ring for mom, royal blue sapphire, sapphire, sapphire band, sapphire collectable, sapphire collector, sapphire engagement ring, sapphire from ceylon, sapphire ring, september birthstone, sky blue sapphire, What color is blue sapphire ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 345.00 USD | In stock | ## Images - Natural blue sapphire Neelam gemstone ring for women, 0.58 carats, from Sri Lanka, featuring a vibrant blue sapphire by NASHGEMS. - Natural blue sapphire Neelam gemstone ring for women featuring a 0.58 ct blue sapphire, from Sri Lanka, by NASHGEMS. - Natural blue sapphire neelam gemstone 0.58 crt in a NASHGEMS ring, showcasing vibrant blue color for women's jewelry from Sri Lanka. - Natural blue sapphire Neelam gemstone ring for women, 0.58 ct blue sapphire from Sri Lanka, crafted by NASHGEMS. - Natural blue sapphire neelam gemstone ring featuring a 0.58 carat blue sapphire, jewelry piece for women from Sri Lanka. - Natural blue sapphire neelam gemstone ring for women with 0.58 carats, featuring a vibrant blue sapphire from Sri Lanka. - Natural blue sapphire Neelam birthstone gemstone, 0.58 ct, in a NASHGEMS blue sapphire ring for women jewelry from Sri Lanka. - Natural blue sapphire Neelam birthstone ring featuring a 0.58 carat blue sapphire gemstone from Sri Lanka, crafted by NASHGEMS. - Natural blue sapphire neelam gemstone ring featuring a 0.58 carat blue sapphire from Sri Lanka by NASHGEMS. ## Additional Information - **Google: Custom Product:** Yes - **Carat:** 0.58 - **Stone Shape:** Round - **Treatment:** Heat Treated --- > Source: [NASHGEMS](https://www.nashgems.com/products/natural-blue-sapphire-neelam-birthstone-gemstone-0-58-crt) > Updated: 2026-07-16