Australian Green Yellow Sapphire | 1.42 ct Radiant Cut | Ethically Mined | Petra Star
Australian Green Yellow Sapphire | 1.42 ct Radiant Cut | Ethically Mined | Petra Star
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Some gemstones simply refuse to be classified — and that's precisely what makes them extraordinary.
This 1.42-carat radiant cut sapphire, responsibly and ethically mined in Australia, belongs to that rare category of stones that collectors and designers seek out not despite their complexity, but because of it. Its vivid green-yellow saturation — a color phenomenon distinctive to Australia's celebrated sapphire deposits — reads differently in every light source: warm and honeyed in candlelight, bright and electric under daylight, and coolly luminous beneath a cloudy sky. It is a stone that keeps revealing itself.
Australian sapphires have long been prized within the trade for their remarkable chromatic range, from steely blues to the deep parti tones and vivid yellow-greens that no other deposit in the world produces quite the same way. This stone represents the latter at its most wearable: a clean, lively color with strong saturation and excellent transparency in a well-proportioned radiant cut that maximizes both face-up brilliance and color depth.
At 7.39 x 5.52 mm, the stone has a commanding face-up presence — generous enough to anchor a substantial custom design while remaining elegant and balanced in proportion.
This sapphire has been hand-selected by Petra Star for custom ring design. Whether you envision a bold solitaire, a nature-inspired setting, or something entirely your own, our studio works with you from concept to creation. Inquire through our custom design page to begin the conversation.
Ethical sourcing is central to everything we do at Petra Star. This stone was responsibly mined in Australia and sourced through vetted supply channels that reflect our commitment to sustainability and transparency in fine jewelry.
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Pickup & Shipping
If you have specific delivery needs or timing requests, please contact us. While we strive to ensure timely delivery, we cannot guarantee dates and are not responsible for carrier delays.
Made-to-Order Items
Made-to-order pieces take approximately 4–6 weeks to craft. We’ll email you once your item is ready to arrange delivery.
One-of-a-Kind Items
These unique items are typically ready for pickup or delivery within 24 hours during business hours. You’ll receive an email when your order is ready. Please allow up to 2 weeks for resizing prior to shipment.
Local Pickup
Available at our downtown Mystic showroom during business hours. We’ll email you to schedule your pickup appointment once your order is ready.
Shipping
Once your item is ready, you’ll receive an email with shipping details. View our shipping policy and for terms and information about international orders.
Sizing
Rings
The majority of our rings are one-of-a-kind. If you would like to order a ring in a specific size, please contact us and we will do our best to accommodate your request.
Helping you find the perfect fit is our priority. There is a flat fee of $60 to size down. The sizing-up cost varies based on width of the ring and the amount of material required.
Keep in mind that finger sizes fluctuate due to factors such as temperature and time of day. Rings with an open space under the mounting, as well as contour bands, may fit differently than fully round rings.
Ring sizings take 3 weeks before they ship.
Our Materials
Our Petra Star signature pieces are made-to-order using recycled alloys. Custom items are available in the following materials:
- 14k yellow, rose, or white gold
- 18k yellow, rose, or white gold
- Palladium
- Platinum
If the item you are considering is not available to purchase in your preferred metal/color, please get in touch with us to discuss your specific request.
Our one-of-a-kind items are only available "as is.” We are happy to discuss the options for remaking a similar piece in a different metal to your specifications—it's one of our specialties.
Depending on the light source and viewing angle, the color of natural gemstones may vary. The depiction of color online and in images may not always accurately reflect the colors that are visible in person. Whenever possible, we recommend viewing the item in person to ascertain its true color.
Custom Designs
Schedule a consultation with our in-house designer and owner of Petra Star, Dimitria. We love getting to know you and pairing the perfect piece to your lifestyle and aesthetic.