What makes Ceylon sapphire different from other sapphire?

Ceylon (Sri Lankan) sapphire is mined from alluvial gem gravels that have already been freed from host rock, and the country's mineral chemistry produces the widest color range of any single sapphire source - blue, yellow, pink, purple, green, teal, padparadscha and star sapphire. Ceylon stones are especially prized for a bright, lively light return.

Are Ceylon sapphires heated or unheated?

A meaningful share of the Ceylon sapphires in this collection are unheated - natural color as mined, with no thermal enhancement. Treatment status is stated plainly on every product page alongside any lab documentation.

Do Ceylon sapphires come with certification?

Larger and finer stones in this collection ship with GIA reports, and the issuing lab is noted on every certified listing.

What makes the 1.00 ct Yellow Sapphire a high-quality gemstone?

The 1.00 ct Yellow Sapphire boasts minimal inclusions, intense color saturation, and a superior polish, all of which highlight its quality and brilliance, making it a premium choice for collectors and jewelry lovers.

How does the radiant cut enhance the appearance of the 1.00 ct Yellow Sapphire?

The radiant cut of the 1.00 ct Yellow Sapphire maximizes light reflection and brilliance through masterful faceting, giving it a vibrant and eye-catching sparkle ideal for jewelry settings.

Is the 1.00 ct Yellow Sapphire suitable for making custom jewelry?

Yes, the 1.00 ct Yellow Sapphire's excellent optical properties and refined cut make it an ideal centerpiece for custom rings, pendants, and other fine jewelry pieces.

What are the care instructions for maintaining the beauty of my yellow sapphire?

To keep your yellow sapphire looking its best, clean it regularly with gentle soap and warm water, and avoid harsh chemicals or abrasive cleaners that could damage its polish.

How does the size of 1.00 carat impact the appearance and value of this yellow sapphire?

At 1.00 carats, this yellow sapphire offers a perfect balance of size and elegance, ensuring a striking yet manageable gemstone that holds significant value and visual impact.

1.00 ct Radiant cut Yellow Sapphire gemstone with vibrant golden hue

1.00 ct radiant cut natural yellow sapphire rotating to show vivid golden hue and brilliance

1.00 ct Radiant cut Yellow Sapphire intense golden hue showcasing clarity and brilliance

Lab report for 1.00 ct Radiant cut Yellow Sapphire

1.00 ct Radiant cut Yellow Sapphire vibrant golden hue showcasing excellent clarity and brilliance

1.00 ct Radiant cut Yellow Sapphire and vibrant yellow color

1.00 ct yellow sapphire radiant cut video showing golden color and clarity

1.00 ct Natural Heated Yellow Sapphire – Radiant Cut

This video is of the actual gemstone, we do not use 'stock' photos. The item is filmed under high magnification. Inclusions are far less visible to the naked eye than in the video.

CG8272

1.00 ct Natural Heated Yellow Sapphire – Radiant Cut

$600.00 USD

Per Carat: $600.00

Buying a loose gemstone gives you independence, you get the freedom to make your own choice, your own jewelry design.

Stone Style	Faceted
Stone Type	Sapphire
Weight (Ct.)	1.0
Enhancement	Heat Treated
Origin	Sri Lanka (Ceylon)
Clarity	Very Slightly Included
Color	Yellow
Color Description	lemon Yellow
Color Intensity	Intense
Stone Shape	Radiant
Dimensions (mm)	7.22 x 4.18 x 3.35
Cut	Radiant Cut
Lab Report	AGCL - Gem Lab

A natural 1.00 carat yellow sapphire in a radiant cut, heat treated. Yellow sapphire at exactly 1 carat in a radiant cut is a convenient specification — the carat weight meets the threshold for center stone use, and the radiant cut combines the architectural silhouette of a rectangular outline with brilliant faceting that maximizes the golden-yellow color. Heat treatment is the standard commercial treatment for yellow sapphire and fully disclosed on this listing.

Why Choose this 1.00 ct Radiant Yellow Sapphire?

The radiant cut suits yellow sapphire well — the cropped corners protect against chipping in ring wear, and the brilliant facet pattern reflects the golden color more actively than step cuts. At exactly 1 carat, this sits at the commercial sweet spot for pendant, earring, and accent ring use, with enough face-up surface to display the yellow clearly at wearing distance.

Key Benefits of this Natural Yellow Sapphire

Convenient 1-Carat Specification
Exactly 1 carat in a radiant cut — ready for center stone, pendant, and earring applications.
Radiant Cut Brilliance
Brilliant faceting in a rectangular outline — more light return than step cuts, protected corners for ring use.
Jyotish-Suitable Weight
1 carat in natural yellow sapphire meets the minimum weight specification for Vedic astrological use (Pukhraj).
Durable for Daily Wear
Corundum at Mohs 9, second only to diamond.
Versatile Setting Options
Radiant cut works in standard rectangular settings without custom fabrication.

Features

Carat Weight: 1.00 Carat
Gem Type: Natural Yellow Sapphire
Cut: Radiant
Treatment: Heat Treated
Color: Yellow
Clarity: Eye-clean — no visible inclusions under normal viewing
Hardness: 9 on the Mohs scale

This 1.00 ct radiant yellow sapphire has been hand-selected for the brightness and evenness of its yellow — the quality that most determines performance in finished jewelry.

Why Customers Love This Gemstone

Practical Specification: Exactly 1 carat meets the threshold for center stone and Jyotish use.
Radiant Cut Performance: Maximum brilliant sparkle in a protected rectangular outline.
Durable Daily Wear: Sapphire's Mohs 9 hardness — no fragility concerns.
Trusted Source: Treatment disclosed honestly, stone hand-selected for color quality.

Owning this 1.00 ct radiant yellow sapphire means choosing a practical, well-cut stone at the most versatile weight specification for yellow sapphire use.

Perfect Uses for this 1.00 ct Yellow Sapphire

Pendant center stone
Engagement ring center stone
Jyotish / Vedic astrological use (Pukhraj)
Earring pair center stones
Custom cocktail ring

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This loose stone is available to ship now

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Turn your purchase into a true work of art. Contact our jewelry department to discuss your vision, and let us craft a bespoke piece designed just for you.

Our works of art

Turn your purchase into a true work of art. Contact our jewelry department to discuss your vision, and let us craft a bespoke piece designed just for you.

The Journey of a Gemstone

Explore the complete journey of a gemstone—from its birth beneath the Earth's surface, through ethical mining and precision faceting, to the moment it becomes a timeless piece ready to be admired and cherished.

Choosing a gemstone for an engagement ring or important piece of jewellery is a deeply personal decision. It is often a meaningful purchase made only a few times in a lifetime, so trust, accurate information and expert guidance matter. Crescent Gems combines more than 25 years of gemstone experience with direct sourcing, careful cutting and transparent treatment disclosure to help you choose with confidence

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Direct sourcing from leading mining regions

No synthetic, flux-filled or beryllium-diffused stones

In-house cutting and recutting

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GIA reports for significant gemstones

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