What is the full range of gemstones available at Crescent Gems?

Our complete catalog spans every sapphire color — blue, pink, yellow, teal, purple, violet, green, orange, peach, white, and padparadscha — plus ruby, tsavorite garnet, and chrysoberyl including cat's eye stones. Every cut, from oval and cushion through fancy shapes, and every price tier from designer-parcel pieces to investment-grade certified stones.

How do I find the right stone in such a large catalog?

Use our color-specific and cut-specific collections to narrow your search, or filter by carat weight, treatment, and price directly on this page. If you're not sure where to start, email crescentgems@gmail.com and we will help you find the right stone for your project.

What makes this yellow sapphire unheated, and why is that important?

This yellow sapphire is unheated, as confirmed by GIA Report #5232949166 — it has not been treated with heat to enhance its color, ensuring its natural beauty and authentic quality. Unheated sapphires are highly valued by collectors for their genuine origin and superior optical properties.

What are the key features of this 2.10 ct yellow sapphire?

This 2.10 ct yellow sapphire displays natural brilliance and clarity, measuring 6.96 x 5.93 x 5.63 mm, with warm, golden hues that are characteristic of premium corundum. It is ideal for both collection purposes and fine jewelry designs seeking untreated gemstones.

What does GIA Report #5232949166 confirm about this sapphire?

GIA Report #5232949166 confirms the stone's species (natural corundum), variety (natural sapphire), weight, dimensions, yellow color, and no indications of heating.

Is this yellow sapphire suitable for jewelry making, and what types?

Yes, this yellow sapphire is perfect for creating elegant jewelry pieces such as rings, pendants, or earrings. Its high-quality optical properties and natural hue make it a desirable choice for fine jewelry craftsmanship.

How does this yellow sapphire compare to heated or treated sapphires?

Unheated yellow sapphires like this one offer a pure, untreated stone with authentic color and superior optical qualities, unlike heated or treated sapphires, which may have artificially enhanced hues but less natural value.

Did this yellow sapphire pass GIA's color stability test?

Yes. GIA Report #5232949166 notes that this stone passed GIA's color stability test, an additional check confirming that its golden-yellow color will not fade or change with prolonged light exposure.

2.10 ct unheated GIA certified yellow sapphire gemstone with natural brilliance and clarity

2.10 ct unheated GIA certified yellow sapphire rotating to show golden hue and brilliance

2.10 ct unheated GIA certified yellow sapphire with natural brilliance and clarity

GIA certified yellow sapphire GIA lab report

2.10 ct untreated GIA certified yellow sapphire gemstone with natural golden hue and excellent clarity

2.10 ct unheated GIA certified yellow sapphire video showing sparkle and clarity under light

2.10 ct unheated GIA certified yellow sapphire with natural golden hue and excellent clarity

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CG8366

2.10 ct Natural Unheated Yellow Sapphire – Oval Cut | GIA Certified

¥301,300 JPY

1カラットあたり： ¥143,476

ルースをお選びいただくことで、石もジュエリーのデザインも、ご自身の思いのままにお決めいただけます。

カットスタイル	ファセットカット
宝石の種類	サファイア
重量（ct）	2.1
処理	無処理
産地	スリランカ
クラリティ	10倍ルーペで内包物なし（当店評価）
カラー	イエロー
カラーの詳細	Golden Yellow
色の濃さ	ミディアム
シェイプ	オーバル
サイズ（mm）	6.96 x 5.93 x 5.63
カット	Mixed Brilliant
鑑別書	GIA

This 2.10 ct natural yellow sapphire offers a warm golden hue, eye-clean clarity, and a well-proportioned oval cut ideal for fine jewelry or collector pieces. Unheated and untreated with a hardness of 9 on the Mohs scale, it is documented on GIA Report #5232949166 and suited to daily-wear settings where durability and verified authenticity matter.

Expert Opinion

"Unheated yellow sapphires above two carats with loupe-clean clarity are genuinely uncommon — most material this size on the market has been heat-treated to improve color and clarity, so a natural, untreated stone that is already eye-clean at this weight stands out. This one earns its GIA report." — Ahmed Shareek, Founder, Crescent Gems

Rarity Analysis

Unheated status: The large majority of yellow sapphire sold today is heat-treated to intensify color and improve clarity — an unheated stone like this one is a genuine minority within the category.
Clarity at size: Loupe-clean clarity in a natural sapphire over 2 carats is uncommon; most stones at this weight carry at least some visible inclusions.
Cut proportions: The oval mixed-brilliant cut is cut to balance brilliance against carat retention, a combination that isn't guaranteed even in well-cut material.
Independent documentation: A GIA report on an unheated colored stone adds a layer of verification that most yellow sapphires on the market don't carry.
Color stability confirmed: GIA notes on this report that the stone passed GIA's color stability test — an additional check confirming the color will not fade or change under light exposure over time.
Combined effect: Unheated, loupe-clean, and GIA-documented together in a single 2+ carat yellow sapphire is a meaningfully rarer combination than any one factor on its own.

Buying Guidance

Confirm treatment in writing: Always verify unheated status through an independent lab report rather than a seller's description alone — this stone's GIA Report #5232949166 documents it directly.
Ask about origin if it matters to you: This listing does not state an origin for this stone. If origin-specific documentation is important to your purchase, contact us directly and we can let you know what information is available for this particular stone.
Check clarity under magnification: "Loupe clean" means no inclusions visible without magnification — ask for close-up photos or video if you'd like to inspect the stone further before buying.
Match the cut to your setting: An oval cut with mixed brilliant faceting suits most ring styles, but confirm the dimensions (6.96 x 5.93 x 5.63 mm) work for your intended setting.
Try Before You Buy: Request additional photos or a live video call to view the stone in different lighting before completing your purchase.

Learn More About This Gemstone

Gemstone Data — At a Glance

Item #	CG8366
Carat Weight	2.10 ct
Species / Variety	Natural Yellow Sapphire (Corundum)
Shape / Cut	Oval, Mixed Brilliant
Dimensions	6.96 × 5.93 × 5.63 mm
Color / Intensity	Golden Yellow
Phenomenon	None
Treatment	None — unheated and untreated
Origin	Not specified
Clarity	Loupe Clean (eye-clean) — our own assessment; GIA colored-stone reports carry no clarity grade
Transparency	Transparent
Hardness	9 (Mohs)
Certification	GIA Report #5232949166

Features of GIA-documented yellow sapphire

SKU: CG8366
Variety: Yellow Sapphire
Carat Weight: 2.10 carats
Dimensions: 6.96 x 5.93 x 5.63 mm
Shape: Oval
Cut Style: Mixed Brilliant
Treatment: None — unheated and untreated
Color: Golden Yellow
Clarity: Loupe Clean — eye-clean, no visible inclusions under normal viewing (our own assessment, not a GIA grade)
Transparency: Transparent
Certification: GIA Report #5232949166
Hardness: 9 on the Mohs scale
Color Stability: Passed GIA's color stability test (per GIA Report #5232949166)

One of a Kind

This is a single natural gemstone, not a lab-created or mass-produced stone. No two natural sapphires are identical — the exact stone pictured is the exact stone you receive.

Care

Clean with lukewarm water and mild soap using a soft brush
Store separately to avoid surface contact
Remove before heavy physical activity
Avoid ultrasonic or steam cleaners

What’s included

GIA report
Gemstone packed in a gem sleeve

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