Natural Ruby 0.37ct Heated Oval Cut
€17.90 EURSKU: Ru269-8
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An oval-cut natural ruby from Africa, 0.37 carats, measuring 4.8x3.8mm. Heat treated, the stone shows a warm red with the transparency characteristic of heated ruby from African sources - good length-to-width proportions in the oval outline, and the faceting carries the color well across the face. Clarity is SI, with inclusions present under magnification but the stone remaining transparent and presenting with clear red color face-up.
African ruby is sourced from producing regions across sub-Saharan Africa, including Mozambique, Tanzania, and Kenya, among others. At 0.37ct and 4.8x3.8mm, this oval is a practical size for a small ring or pendant setting. Natural ruby, loose gemstone, July birthstone.
Natural African ruby, heated oval, July 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 ruby
Ruby is the red variety of the mineral corundum. 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 ruby, but skip them if the stone has fissures that reach the surface.
Wear and storage
Ruby 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 ruby is heated, and the color from heating is stable. Ruby 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: 4.8 × 3.8 mm
Shown next to a €1 coin (23.25 mm) in the exact ratio, so you can picture the real size.
