7.99 ct Natural Unheated Purple Star Sapphire – Round Cabochon Cut | GIA Certified | Sri Lanka (Ceylon)

A natural 7.99 ct Round Purple Star Sapphire, from Sri Lanka (Ceylon), completely unheated, with a GIA Sapphire Origin Report (#5232980224) confirming species, weight, dimensions, geographic origin, and the presence of asterism. This stone displays a six-rayed asterism — a sharp silver-white star that moves across the dome when illuminated by a single directional light source. The round cabochon format is the most classical shape for star sapphires, centering the star symmetrically on the dome for maximum visual impact. At 7.99 carats unheated from documented Ceylon origin, this stone sits at the premium tier of the star sapphire market.

STAR WILL ONLY BE SEEN UNDER DIRECT SUNLIGHT OR FLASHLIGHT.

Rarity Analysis

Star sapphires are already a minority within sapphire production — most rough corundum is cut into faceted stones, and only a fraction of the remainder displays sharp, symmetric asterism. Within that smaller group, this stone sits near the top of several independent rarity factors that compound rather than simply add up:

• Color: Purple is an uncommon body color for star sapphire; most star material on the market is blue, gray, or black. A well-saturated purple star is encountered far less often than a blue equivalent.
• Size: Most commercial star sapphires are cut below 3–4 carats. Stones approaching or exceeding 7 carats that still hold a sharp, evenly-formed star — rather than a diffuse or broken one — become progressively scarcer as size increases.
• Treatment: A large share of star sapphires sold today have been heat-treated or lattice-diffused to improve color or strengthen asterism. A completely unheated star sapphire at this size, with both the star and body color entirely natural, represents a small percentage of total supply.
• Documentation: A GIA report confirming species, unheated status, and asterism together — as this stone carries — is not something every star sapphire on the market can offer, even among genuinely natural material.
• Combined effect: Any one of the factors above is uncommon on its own. A stone that is simultaneously large, purple, unheated, sharply asterated, and GIA-documented is rare enough that a directly comparable piece is not something a buyer should expect to find readily available, or to be able to reorder later.

Buying Guidance

A few practical points to weigh before purchasing this specific stone:

• Check your lighting first. The star on this stone only resolves under a single, direct light source (sunlight or a flashlight beam) — diffuse indoor lighting will show a soft glow rather than a defined star. If the asterism is your main reason for buying, view the stone under the lighting you intend to use before committing.
• Mounting choice matters. Cabochon star sapphires are almost always bezel-set or given a protective collar rather than prong-set, since the domed surface has no facets to catch light from the sides. At just under 11mm across, this stone reads as a substantial centerpiece for a pendant, statement ring, or cufflink pair; ring settings should be discussed with a jeweler given the 6.63mm depth.
• Verify treatment claims when comparing elsewhere. Many star sapphires on the market are heat-treated or diffusion-treated to sharpen the star or deepen color. When comparing this stone to alternatives, ask specifically whether a GIA (or equivalent) report confirms "no indications of heating" — general descriptions like "natural" or "genuine" do not by themselves rule out treatment.
• Weigh the long-term value. Because the combination of size, color, unheated status, and documentation is uncommon (see Rarity Analysis above), a stone like this is not easily replaced once sold — worth factoring in if you are weighing it against a more common heated alternative at a lower price.
• Use the Try Before You Buy option if you would like to see the stone and its star in hand, under your own lighting, before finalizing the purchase.

Learn More About This Gemstone

• Purple Sapphire Buyer's Guide
• Star Sapphire Guide
• Unheated Sapphire Guide
• GIA Guide
• Custom Ring Guide
• Purple vs Violet Sapphire
• Sapphire Buying Guide

Why Choose this 7.99 ct Unheated Round Purple Star Sapphire?

The round cabochon is the preferred format for star sapphires because the symmetric dome presents the six-ray star with equal arm length in all directions, making the phenomenon as visually balanced as possible. At 7.99 carats, the star is large enough to be clearly visible across a room under a single light source, and the GIA report (#5232980224) confirms the asterism, the unheated status, and the Ceylon origin.

Key Benefits of this 7.99 ct Round Purple Star Sapphire

• Unheated Ceylon Origin
  No thermal treatment — the asterism and purple body color are entirely natural.
• Round Cabochon — Classical Format
  The round dome presents the six-ray star with perfect symmetry — the traditional star sapphire format.
• Sharp Six-Ray Asterism
  A complete, sharp six-rayed silver star under direct single-source illumination.
• Near-8-Carat Scale
  At this size the star has commanding room-scale presence under a single light source.
• Hardness: 9 on the Mohs scale
  Corundum durability for any jewelry application.

Features

• Carat Weight: 7.99 Carats
• Gem Type: Natural Purple Star Sapphire
• Variety: Purple Star Sapphire
• Dimensions: 10.87 - 11.06 x 6.63 mm (per GIA report)
• Shape: Round
• Cut Style: Double Cabochon
• Origin: Sri Lanka (Ceylon), confirmed by GIA
• Treatment: Unheated — No Indications of Heating (per GIA report)
• Color: Purple
• Phenomenon: Six-ray asterism, confirmed by GIA
• Transparency: Transparent to Translucent (characteristic of star sapphire)
• Certification: GIA (Gemological Institute of America), Sapphire Origin Report #5232980224
• Hardness: 9 on the Mohs scale

One of a Kind

This is a natural, untreated gemstone — no two star sapphires display exactly the same star, body color, and dome geometry, and once this stone is sold it cannot be reordered or reproduced.

Care of Round Purple Star Sapphire

• Clean with lukewarm water and mild soap using a soft brush
• Remove before heavy physical activity, sports, or manual work
• Avoid ultrasonic or steam cleaners
• Store separately from other jewelry to protect the domed surface from scratching

This 7.99 ct Round Purple Star Sapphire has been hand-selected for the quality of its six-ray star and its purple body color — the two elements that define a fine star sapphire regardless of size.

Why Customers Love This Gemstone

• GIA Documentation: Ceylon origin, unheated status, and asterism confirmed by GIA report #5232980224.
• Round Symmetry: The classical cabochon format for maximum star symmetry and visual balance.
• Near-8-Carat Presence: Commanding scale for statement jewelry and collector display.
• Trusted Source: Ceylon origin, unheated, every attribute disclosed honestly.

Owning this 7.99 ct unheated round purple star sapphire means choosing a phenomenon gemstone with classical format, exceptional scale, and GIA documentation.

Perfect Uses for this 7.99 ct Purple Star Sapphire

• Statement pendant — star visible under any single light
• Large collector or display piece
• Gentleman's statement ring
• Investment in documented premium star sapphire
• Astrological or spiritual jewelry at meaningful weight

Free US shipping; Try-On available.

Item #: CG8441 | GIA Report #: 5232980224