Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka

Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka

Blue / Octagon / 4 - 5 Carats
AED 23,844.00
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Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
  • Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka
Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka

Natural Blue Sapphire 4.51 Carats in Octagon Shape & 10.00x8.66x5.29mm Size from Sri lanka

AED 23,844.00
ColorBlue
ShapeOctagon
Carats Weight4 - 5 Carats

Ring Size Guide

The easiest way to find your ring size is to measure a ring that already fits the same finger well, then match it on the chart below. If you have no ring to hand, a strip of paper and a ruler work too.

Raza Gems ring size chart with inner diameter and size conversions

How to measure your ring size at home

  1. Use a ring that fits: lay it on a ruler and measure the inside diameter, edge to edge, in millimetres. Match that number on the chart.
  2. No ring? Use paper: wrap a thin strip of paper around the base of your finger, mark where it overlaps, and measure the length in millimetres. That is your finger's circumference.
  3. Measure twice: do it at the end of the day, when fingers are a little larger, and avoid very cold hands.

Tips for the right fit

  • Knuckles: the ring must slide over your knuckle. If your knuckle is wider than the base of your finger, choose a size between the two.
  • Wide bands: a wide band or a signet ring feels tighter, so many people go half a size up.
  • Between sizes: pick the larger one. A ring can be made slightly smaller more easily than larger.
  • Gift and not sure? Borrow a ring the person wears on the same finger, or tell us and we will help you choose.

Still unsure? Send us a photo of your measurement on our contact page, or visit one of our Dubai showrooms and we will size your finger in a minute. For made-to-order pieces, see custom orders.
Description

This natural blue sapphire weighs 4.51 carats and is cut in an octagon shape. It measures 10.00x8.66x5.29 mm and comes from Sri Lanka.

Sapphire details

  • Gemstone: Natural blue sapphire
  • Shape: Octagon
  • Weight: 4.51 carats
  • Measurements: 10.00x8.66x5.29 mm
  • Colour: Blue
  • Origin: Sri Lanka

Octagon shape in a setting

An octagon has clipped corners, so it is less likely to chip than a sharp square. It sits neatly in a four-claw or bezel setting.

White gold makes the blue look deeper, while yellow gold gives a classic royal feel.

At about 10 mm long, it is a good size for a solitaire ring that is seen but not heavy. A depth of 5.29 mm lets it sit low in a setting.

For lab paperwork on this stone, please ask our team.

About Blue Sapphire (Neelam)

Blue sapphire is corundum coloured by iron and titanium, in shades from light cornflower to deep royal blue. At 9 on the Mohs scale it resists scratches well and suits everyday rings.

  • Mineral: Corundum
  • Hardness: 9 on the Mohs scale
  • Main sources: Sri Lanka, Madagascar, Myanmar (Burma), Thailand, Australia
  • Treatments: Most blue sapphires are heated to improve colour and clarity, and some are diffused; ask us for the lab report on any stone to see its treatment.
  • Care: Clean with warm soapy water and a soft brush; ultrasonic cleaning is usually safe for untreated stones without fractures.

Buying from Raza Gems: in Dubai since 2005, lab reports on major stones, 7-day returns and insured worldwide shipping.
Shipping & Delivery

Delivery: UAE AED 25, 2–3 business days. Worldwide AED 199, 5–10 business days, tracked and insured.

Dispatch: loose stones in 1–2 business days, ready-made jewellery in 2–3.

Full shipping policy
Returns & Authenticity

7-day returns: loose stones and ready-made jewellery can be returned within 7 days of delivery, unused, with their certificate and packaging.

Authenticity guarantee: if a recognised lab finds a stone is not as described, we refund the full price and the lab fee.

Made to order: custom pieces can't be returned unless faulty.

Full returns & refunds policy

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