Our Blue Sapphires
Diffusion treatment.
Diffusion is a treatment process that uses heat and chemicals to diffuse an element into a gemstone to artificially change its color.
Our sapphires are natural, non-synthetic stones that has been dug out of the earth, but is then subjected to high heat in an oven. This causes the atoms to penetrate or diffuse into the sapphire, altering its color.
Sapphires, are composed of the mineral corundum, a mineral that can be, but is not rare in every shape and form. But, an untreated sapphire is exceptional because of its natural color and clarity. And also because of the rarity. Untreated sapphires are rare, because almost all sapphires are heated at extremely high temperatures to boost their color and clarity.
Oval Cut Cluster Blue Sapphire Engagement Ring
Ring Size Guide
Imagine yourself taking a lot of time to find your future wife the perfect ring – obviously one with a diamond. You are aiming for the highest scores possible, taking into account the 4C guidelines for diamonds. When you’re ready to put the ring on her finger, you sadly discover that there was one thing you overlooked: the ring size. It keeps sliding off her finger, or you can’t get it past the thickest phalanx… in either case you’ll wonder how you could have overlooked the obvious ring size matter, after the initial embarrassment of partly ruining one of the most significant occasions of both your lives. Still, it does happen (a lot), so we thought we’d mention it upfront.
Be resourceful
You don’t have to do the impossible to find out her ring size. The most important thing is that you know on which finger she will want to wear her future engagement ring. The ring you’re buying needs to fit that finger.
Some tips:
- Ask a sibling, a parent or a close friend about her ring size. If one of these people actually does know the size, this is the path of least resistance.
- Borrow one of the rings she regularly wears and check the size – either by going to a store or with a DIY Ring Size Guide that you can find online.
- You can use a woman’s average finger size (6 to 6.5) as a guideline for ring size if you do not have more specific information.
Keep in mind:
- A wedding ring usually goes on the ring finger of the left hand. Make sure, if you decide to measure, that you check the right hand.
- It is recommendable to compare your ring to a similar ring of hers. To do this, you should always try to measure your ring to a ring with a similar width.
- If there is no other option left then to guess, make sure you take a large enough safety margin. A ring that is too large will go over her finger, but a ring that is too small will not!
Easy way to measure the finger
Free Lifetime Warranty
Free unlimited cleaning and repairing of any damage to your jewelry like: fracture, crack, worn, bent and any cosmetic damage.
Free unlimited replacement of any damage/lost to your side/accent stones (for small round diamonds on shank/band/halo only).
Free unlimited ring resizing.
Give her a ring as unique as your love. This stunning piece holds a 4 carat oval cut blue sapphire engagement ring. A sparkling cluster of 0.60 carat round and marquise cut diamonds completes the look. Fits perfectly for comfortable daily wear. The ultimate proposal gift.
Ring information
- SKURA371S
- Ring StyleCluster
- Side Stones ShapeRound and Marquise
- Side Stones Weight0.60 Carat
- Side Stones GradeD / VVS1
- Side Stones CutExcellent
- TypeLab Grown Diamonds
Center Stone information
- ShapeOval
- Carat4.00 Carat
- Measurements10x8mm
- GradeAAA
- ColorBlue
- ClarityEye Clean
- OriginSri Lanka
- CertificateAppraisal Report
- CommentsDiffusion Treatment
- TypeNatural Sapphire
Your Order Includes
30 Day full refund
Lifetime warranty
Quality packaging
Free express shipping
Customer service 24/7
Certificate of authenticity
Free Shipping & Returns
Our worldwide express shipping service is fast, tracked and fully insured, and we use trusted courier service FedEx Express. All orders are shipped within 7-14 working days with door-to-door delivery and require a signature upon receipt for added security. *Additional duties and taxes may apply.
No Questions Asked Return Policy. All items in our shop come with 30 day full money back guarantee.
Choose options
Ring Size Guide
Imagine yourself taking a lot of time to find your future wife the perfect ring – obviously one with a diamond. You are aiming for the highest scores possible, taking into account the 4C guidelines for diamonds. When you’re ready to put the ring on her finger, you sadly discover that there was one thing you overlooked: the ring size. It keeps sliding off her finger, or you can’t get it past the thickest phalanx… in either case you’ll wonder how you could have overlooked the obvious ring size matter, after the initial embarrassment of partly ruining one of the most significant occasions of both your lives. Still, it does happen (a lot), so we thought we’d mention it upfront.
Be resourceful
You don’t have to do the impossible to find out her ring size. The most important thing is that you know on which finger she will want to wear her future engagement ring. The ring you’re buying needs to fit that finger.
Some tips:
- Ask a sibling, a parent or a close friend about her ring size. If one of these people actually does know the size, this is the path of least resistance.
- Borrow one of the rings she regularly wears and check the size – either by going to a store or with a DIY Ring Size Guide that you can find online.
- You can use a woman’s average finger size (6 to 6.5) as a guideline for ring size if you do not have more specific information.
Keep in mind:
- A wedding ring usually goes on the ring finger of the left hand. Make sure, if you decide to measure, that you check the right hand.
- It is recommendable to compare your ring to a similar ring of hers. To do this, you should always try to measure your ring to a ring with a similar width.
- If there is no other option left then to guess, make sure you take a large enough safety margin. A ring that is too large will go over her finger, but a ring that is too small will not!
Easy way to measure the finger
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When you choose our jewelry, you're not just making a purchase — you're investing in an exceptional experience. We provide personalized customer service, taking responsibility to ensure you feel safe, satisfied, and truly delighted with every piece we create for you. Just as we never compromise on quality, we also never compromise on service. Your happiness is our top priority. Our customers feedback proves it.