Natural Blue Sapphire 0.51ct Untreated Fancy Cut Australia
€17.90 EURSKU: sa659-5
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A square-cut sapphire with a wide, flat face and a color so deeply saturated that it reads close to black through the center, opening into a cool navy with green-teal glints where the light catches the crown facets. The step-cut crown keeps the outline crisp and gives the stone a good deal of face for its 0.51ct. Held to the light, some internal veiling and a few darker streaks show through the top, consistent with SI clarity. The polish is clean and the corners are sharp.
Australian sapphire is known for exactly this kind of dark, strongly saturated blue, often with a green or teal secondary hue that sets it apart from the warmer blues of Sri Lanka and Madagascar. This stone is untreated, with no heat of any kind, so the depth of color is entirely its own. The broad square face suits bezel and flush settings, and rewards a design that lets light in from behind or beside the stone rather than asking it to sparkle from the front. Sapphire is the September birthstone.
Natural Australian blue sapphire, untreated, September birthstone, sold loose.
We ship worldwide from Sofia, Bulgaria. Every order is packed in a protective box with bubble wrap. Orders within Bulgaria are dispatched within 1-2 business days and international orders within 2-3 business days. Free shipping is applied automatically at checkout, and the threshold applies to the order value after any discounts.
Delivery within Bulgaria
- Delivered by Speedy, Econt or Box Now, to a courier office, a locker or your address.
- Fixed prices: Box Now locker €1.60 (free on orders from €25), Speedy office €3.20, Econt office or locker €4.00, Speedy to your address €4.50.
- Free shipping on orders over €50, with any courier and at any weight.
- Cash on delivery is available.
- Delivery normally takes 1-2 business days after dispatch.
- Hardness
- 9
- Cleavage
- None
- Durability
- Excellent
- Soapy water
- Safe
- Ultrasonic
- Usually safe
- Steam
- Usually safe
About sapphire
Sapphire is corundum in every color except red. At 9 on the Mohs scale it is second only to diamond, and it is also very tough with no cleavage, so it rarely chips or splits when knocked. Together that makes it one of the most durable gemstones for everyday wear, rings included.
Cleaning
Warm water, a drop of mild dish soap and a soft toothbrush are all you need. Brush behind the stone too, where dust and skin oils collect, then rinse and dry with a soft cloth. Ultrasonic and steam cleaners are usually fine for a faceted sapphire, but skip them if the stone has fissures that reach the surface.
Wear and storage
Sapphire is very hard, so it can scratch softer gemstones stored with it. Only diamond can scratch it, so keep it apart from diamonds and store it on its own in a gem jar or a soft pouch.
For your jeweler
This sapphire is untreated. Sapphire handles normal setting, re-tipping and polishing well. If the stone has fissures that reach the surface, keep it out of direct torch flame and acid pickle.
Scale
True to scale: 6.2 × 5.6 mm
Shown next to a €1 coin (23.25 mm) in the exact ratio, so you can picture the real size. The outline is approximate.
