Designed with you. Completed without compromise.

Complimentary Insured Worldwide Delivery

4.54 carats Unheated Natural Cornflower Blue Sapphire | Emerald Cut

The first thing to notice is cornflower blue; at 4.54-carat, this emerald has enough presence for it to register immediately.

Gemstone $14,200.00

See this exact gemstone in compatible SARATTI settings.

This 4.54 carat Natural Sapphire carries an Intense Blue colour grade with the GUILD trade designation Cornflower Blue. Its face-up appearance shows a strongly saturated blue field, with lighter blue reflections moving through the upper and outer facets while deeper blue areas through the centre create visible tonal contrast.

The physical outline is Octagonal, while the gemstone is finished with a Modified Brilliant cut. Clipped corners frame its broad geometric face, and the faceting produces sharp angular flashes around the crown together with more concentrated blue reflections through the centre. Natural internal characteristics remain visible under close observation and contribute to the individual appearance of this sapphire.

At 4.54 carats and 9.32 × 7.20 × 6.63 mm, the sapphire has substantial face-up presence and enough scale for its octagonal geometry to remain visually prominent. Its Cornflower Blue colour and structured outline make it particularly suitable for an engagement ring, centre-stone ring, three-stone composition, pendant, or bespoke high-jewellery design.

Characteristics
  • Colour: Intense Blue — Trade Name: Cornflower Blue
  • Exact Carat Weight: 4.54 carats
  • Dimensions: 9.32 × 7.20 × 6.63 mm
  • Shape: Octagonal
  • Cut: Modified Brilliant
  • Durability and Care: Ranking 9 on the Mohs scale, Sapphire offers excellent resistance to scratching and is well suited to frequently worn fine jewellery when set and cared for appropriately.
  • Jewellery Suitability: Well suited to engagement rings, centre-stone rings, three-stone designs, pendants, and bespoke high-jewellery pieces.
  • Certificate: Accompanied by a SARATTI Gemstone Identification Report and certification from GUILD.
Gemstone Details

Gemstone Type: Natural Cornflower Blue Sapphire
Species: Corundum
Variety: Natural Sapphire
Carat Weight: 4.54 carats
Shape: Octagonal
Cut: Modified Brilliant
Colour: Intense Blue — Cornflower Blue
Dimensions: 9.32 × 7.20 × 6.63 mm
Treatment: No indication of thermal enhancement
Certificate: SARATTI Gemstone Identification Report and GUILD Gemological Report

September Birthstone

Sapphire is the traditional birthstone for September and is also associated with the 5th and 45th wedding anniversaries. Its durability and broad natural colour range have established Sapphire as an enduring choice for both traditional and contemporary fine jewellery.

Design Invitation

The Cornflower Blue colour and clipped-corner geometry of this Octagonal sapphire would pair naturally with platinum or white gold, creating a crisp contrast around the blue centre stone. Tapered baguette or trapezoid diamond side stones could reinforce its architectural outline, while a restrained solitaire would allow the Modified Brilliant faceting and colour to remain the main focus. The sapphire may be acquired loose or developed through SARATTI’s bespoke service.

Your gemstone is set into the design you choose. Every pairing is reviewed by a specialist before production begins.

HANDPICKED

Chosen with judgement — looking beyond the certificate to colour, character, proportion and presence.

HANDCRAFTED

Each piece is considered around the stone, with proportion, setting, comfort and finish working together.

HEARTFELT

Personal guidance and thoughtful creation shaped around the person, the moment and what the piece is meant to become.

CARED FOR, AFTERWARDS

Secure delivery and ongoing care long after the piece leaves our hands.

This 4.54 carat Natural Sapphire carries an Intense Blue colour grade with the GUILD trade designation Cornflower Blue. Its face-up appearance shows a strongly saturated blue field, with lighter blue reflections moving through the upper and outer facets while deeper blue areas through the centre create visible tonal contrast.

The physical outline is Octagonal, while the gemstone is finished with a Modified Brilliant cut. Clipped corners frame its broad geometric face, and the faceting produces sharp angular flashes around the crown together with more concentrated blue reflections through the centre. Natural internal characteristics remain visible under close observation and contribute to the individual appearance of this sapphire.

At 4.54 carats and 9.32 × 7.20 × 6.63 mm, the sapphire has substantial face-up presence and enough scale for its octagonal geometry to remain visually prominent. Its Cornflower Blue colour and structured outline make it particularly suitable for an engagement ring, centre-stone ring, three-stone composition, pendant, or bespoke high-jewellery design.

Why we chose this stone

Cornflower Blue at 4.54-carat.

Consider this emerald if cornflower blue is the quality you want to notice first. At 4.54-carat, the emerald cut outline gives that strength enough space to remain visible once the stone is set.

  • CORNFLOWER BLUE
  • 4.54 CT
  • EMERALD CUT

Gemstone details

Gemstone Type
Natural Cornflower Blue Sapphire
Species
Corundum
Variety
Natural Sapphire
Carat Weight
4.54 carats
Shape
Octagonal
Cut
Modified Brilliant
Color
Intense Blue — Cornflower Blue
Dimensions
9.32 × 7.20 × 6.63 mm
Treatment
No indication of thermal enhancement
Enquire about this stone
4.54 carats Unheated Natural Cornflower Blue Sapphire | Emerald Cut
Natural blue sapphire hand-set in a fine jewellery ring, claws closed by one setter | SARATTI Blue sapphire gemstone ring held in the hand, seat cut to its measured depth | SARATTI

HANDCRAFTED

A stone this hard
still asks for a gentle hand.

Sapphire outlasts the metal around it, which is why the metal has to be right. Seat cut to its measured depth, every claw closed by one setter. A ring worn daily, a pendant close to the skin, a matched pair for earrings.

Discover our craftsmanship

Your next step

Two ways to continue, and no hurry to choose.

Have it set

Choose a setting and the atelier builds it around this stone's measurements. You see images of the finished piece before it travels to you.

Create with this stone

Take the stone as it is

The stone travels loose, with its report, insured and signed for. Set it with your own jeweller, or come back to us whenever you are ready.

Purchase the stone alone
SARATTI signature presentation SARATTI signature presentation
Signature Presentation

Every SARATTI piece is prepared in our signature presentation, carefully protected for a refined reveal and secure delivery.

Complimentary Insured Shipping

SARATTI offers complimentary insured express shipping on all orders. Each piece is carefully prepared, protected, and sent through trusted express couriers.

Learn More
Ask a SARATTI Advisor

Speak with a SARATTI concierge for help with gemstones, sizing, personalization, delivery, or bespoke adjustments before placing your order.

Responsibly Chosen Materials

Every SARATTI piece is created with considered materials, selected stones, and careful craftsmanship. We choose quality with intention, so each jewel feels meaningful from selection to final delivery.

Size Guide

Use the SARATTI size guide to choose the right fit for your ring, bracelet, necklace, or made-to-order piece.

Before you decide

Questions worth asking.

Is this the exact gemstone I will receive — and can I see more of it?

Yes. The gemstone shown on this page is the individual stone you are considering — not a representative image from a parcel.

We photograph and film the actual stone and do everything possible to show its color, proportions and character faithfully. Even so, gemstones can respond differently to daylight, warm interior light and different screens.

If you are uncertain, we can provide additional photographs or video and, where useful, reshoot the stone under different lighting or from another angle before you decide.

Can I confirm the gemstone is still available before I proceed?

Of course.

Send us the product link or reference and our concierge can confirm availability before you proceed.

For an important purchase, we would rather confirm first than have you make a decision around a stone that has already been spoken for.

How do I know which setting will suit this gemstone?

The builder presents settings intended to work with the gemstone you have selected.

Before production begins, the pairing is reviewed for proportion, security and suitability.

If we believe another setting, proportion or approach would serve the stone better, we will tell you before anything is made. The setting should serve the gemstone — not simply accommodate it.

What happens after I choose my gemstone and setting?

We confirm the important details with you before production begins.

That includes your gemstone, setting, metal, side stones where relevant, size, engraving and any personal details.

Nothing enters production until the final specification has been reviewed and approved.

Will I see the finished piece before it is sent?

Yes.

Once your piece is complete, it is photographed and filmed with your gemstone set into it.

Those images are sent to you before dispatch, so you can see the finished jewel before it leaves SARATTI.

How long will my piece take?

Made-to-order pieces generally require around three to four weeks from final approval to completion.

A loose gemstone purchased on its own can usually be prepared for dispatch much sooner.

If you are working towards a proposal, anniversary, birthday or travel date, tell us before ordering. We will let you know what is realistically possible rather than promise a date we cannot honour.

How will my order be delivered?

Your order is sent by insured courier with tracking and appropriate delivery security.

The route and carrier depend on destination and value.

Where duties or local taxes may apply, our concierge can explain the available delivery options before dispatch.

Can I return a loose gemstone?

A loose gemstone may be returned within fourteen days of delivery provided it remains unworn, unset and unaltered, with its packaging and documentation intact.

Please contact us before sending anything back so the return can be arranged securely.

What happens once the gemstone has been set?

A jewel created around your selected gemstone is made specifically for you.

Once the final specification has been approved and production has begun, the gemstone and materials are committed to your piece.

That is why we take time to confirm the details with you before making begins.

What if I am still unsure?

Then do not rush the decision.

We can help you compare this gemstone with another, look again at color or proportion, send additional imagery, discuss a setting or simply talk through what matters most to you.

The right stone should feel considered — not hurried.

What happens after I receive my piece?

Our relationship does not end at delivery.

SARATTI provides ongoing care for the jewelry we create, including inspection, cleaning and appropriate maintenance support as the piece is worn over time.

If anything ever concerns you, speak with us before attempting repair or alteration elsewhere.