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    Natural Yellow Sapphire 1.70 Carat Untreated Unheated From Sri Lanka A Grade Rectangle

    Natural Yellow Sapphire 1.70 Carat Untreated Unheated From Sri Lanka A Grade Rectangle

    ₹ 3,700.00
    ₹ 5,100.00 ₹ 3,700.00
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    Step into the luminous realm of natural, unheated corundum with this distinguished Natural Yellow Sapphire(Pushparagam / Pukhraj). Weighing a classic 1.70...

    Availability: Low stock
    SKU: 11103694

    Shipping & Returns

    Free shipping on all orders above ₹1999. Limited return available, please refer to Return & Refund Policy.

    We ship all domestic orders (except custom orders) within 7 business days

    Certification

    All products sold comes with LBG's authenticity undertaking. There is no separate certificate issued, the invoice shall serve as the authenticity claim.

    Some products would be certified through reputable domestic labs as mentioned. However, if the certifying agency is different (applicable for few products we acquire) would be mentioned in the description. The gemmological laboratories we associate with are as below:

    1. DHC International Gemlab & Institute: Headquartered at Kerala India, DHC is reputed gemstone testing and gemmologist training institution in the world with presence in 11 locations across 3 countries with trusted service of over 15 years. DHC provides accurate gemstone analysis, evaluation which is verifiable online through their own portal.
    2. Bharrat Gem Testing Lab (BGTL): Yet another trusted name in gemstone certification and evaluation, headquarted in Chennai BGTL is also located in Jaipur, covering two major colour gemstone hotspots in India. With a legacy of 27 years, BGTL certificates are valued internationally. BGTL also offers online certificate verification.

    Other certifying agencies includes Golconda Institute of Diamonds (Hyderabad) and IGITL (Jaipur).

    Apart from this, customers can opt for certifications with few other internationally acclaimed laboratories for which they would be charged on actual cost of certification and transportation. This includes:

    1. Gemmological Institute of America (GIA)
    2. HRD Antwerp
    3. SSEF (Switzerland)
    4. Gubelin (Switzerland)
    5. International Gemmological Institute (IGI)
    6. Gemmological Institute of India (GII, sponsored by GJPEC)

    Size Chart

    All dimensions of gemstones are provided milli meters (mm). Weights are mentioned in carats (also in grams).

    • 1mm = 0.1cm
    • 1mm = 0.39 inche
    • 1 carat = 0.2 gram
    • 1 carat = 0.0071 ounce

    Ring Size Measurement:

    For gemstone size measurement we use plastic scale, please ensure you compare your available ring size to the following chart.

    Click Here to calculate your ring size if you do not have access to right equipment to calculate your ring size.

    Necklace Size Measurement:

    Necklace for women ranges from 14 inches (chocker) to 30 inches (long chain) with sizes increasing in 2 inches. Sizes are 14, 16, 18, 20, 22, 24, 26, 28, 30 with standard sizes as 14, 18, 24 and 30.

    Chains for men ranges from 18 inches (till collarbone) to 30 inches (below chest). Standard sizes are 18, 20 and 30.

    Bracelet Size Measurements:

    Bracelet sizes is measurement of your wrist circumference.

    • Small: 6.5 to 7 inches
    • Medium: 7 to 7.5 inches (Most Common)
    • Large: 7.5 to 8 inches
    • XL: 8 to 8.5 inches
    • 2XL: 8.5 to 9 inches
    • 3XL: 9 to 9.5 inches.

    Care Instructions

    General Instructions:

    1. Gently cold to warm water and mild soap. Opals (except for Australian) should not be exposed to water or moisture.
    2. Most gemstones will get more luster if applied oil from time to time.
    3. Wipe only with soft cotton cloth or micro fiber cloth.
    4. Store gemstones separately in a soft pouch to avoid scratches due to rubbing with other stones or hard surfaces.
    5. Avoid exposure to any type of harsh chemicals, high temperatures and long time exposure to direct sunlight.
    6. Protect from Impact, even though gemstones like sapphires and diamonds are hard materials, high impact may cause chipping of thin edges. Avoid direct impact on hard surfaces.
    7. To see care instruction for each gemstone, please refer to our gemstone care page (Click Here) or watch video (Click Here)
    View full product details

    Step into the luminous realm of natural, unheated corundum with this distinguished Natural Yellow Sapphire(Pushparagam / Pukhraj). Weighing a classic 1.70 carats, this gemstone exhibits a cheerful, radiant Yellow body tone sourced directly from the legendary alluvial gem beds (illam) of Sri Lanka (Ceylon). Revered for millennia across Vedic traditions as the supreme gemstone of fortune, intellect, and divine grace, Ceylon yellow sapphires represent the world’s most celebrated benchmark for natural brilliance and astrological purity.

    The Ceylon Provenance & Transparent Grade A Profile: While the vast majority of commercial yellow sapphires undergo beryllium diffusion, surface chemical coating, or high-temperature lattice alteration to artificially intensify color, this Sri Lankan sapphire is 100% natural, completely unheated, and untreated. Graded at Grade A Quality, it is curated specifically for astrological remedies and accessible fine jewelry. Its transparent crystal body allows lively light transmission, accented by delicate, authentic natural inclusions—the definitive organic seal of untouched Earth crystallization confirming it has undergone zero synthetic enhancement.

    The Rectangle Step Cut Geometry & Balanced Proportions: Faceted into a clean, architectural Rectangle Step Cut, this gemstone features well-balanced dimensions of 7.5mm x 6.1mm with a comfortable 3.7mm depth. Measuring 7.5mm in length and over 6mm in width, its parallel step-cut facets and broad table deliver an open, elegant window of light and color that flatters the finger while seating comfortably flush in custom mountings.

    Technical Specifications

    • Gemstone Category: Natural Yellow Sapphire (Pushparagam / Pukhraj / Corundum)

    • Grade: Grade A (Transparent / Accessible Fine Jewelry & Astrological Quality)

    • Carat Weight: 1.70 Carats

    • Color: Natural Yellow (Vibrant Ceylon Sunlight)

    • Dimensions: 7.5mm x 6.1mm x 3.7mm

    • Shape/Cut: Rectangle Step Cut

    • Origin: Sri Lanka (Ceylon)

    • Clarity: Transparent with Authentic Natural Inclusions

    • Treatment: 100% Natural (No Heat, No Beryllium Diffusion, No Glass Filling, No Enhancements)

    The Pure Source Advantage

    At Let's Buy Gems by Syamantakamani, we maintain an uncompromising standard for authentic, un-enhanced natural gems. Thermally altered or chemically diffused yellow sapphires lose their natural vibrational purity and often fade or develop cloudiness under UV exposure. Because this authentic Ceylon specimen is entirely unheated and untreated, its cheerful golden sunlight hue and crystalline structure will remain vibrant, stable, and radiant across generations.

    Unbiased Certification

    Transparency is the foundational cornerstone of our curation process. This natural Sri Lankan Yellow Sapphire is curated to meet strict standards of gemological integrity, consistent with our premium inventory at letsbuygems.com. Every single piece is fully eligible for independent, third-party laboratory verification to confirm its 100% natural origin, unheated status, and precise dimensions for your complete peace of mind.

    Astrological Potency & Jewelry Versatility

    In Vedic and South Indian astrology, Yellow Sapphire (Pushparagam / Pukhraj) is the primary gemstone of Jupiter(Guru / Brihaspati), the planet of spiritual wisdom, divine fortune, noble character, higher education, marital harmony, and prosperity. Because this specimen is completely unheated and free from chemical diffusion, its planetary energy channels remain open, potent, and exceptionally receptive for daily astrological wear.

    The crisp 7.5mm x 6.1mm rectangular silhouette makes this sapphire an effortless choice for bespoke fine jewelry. It is perfectly suited for an open-back bezel setting in 18K yellow gold, panchdhatu, or pure silver (traditionally worn on the index finger of the working hand on a Thursday morning during Shukla Paksha for astrological benefits), a handsome signet ring, or an architectural pendant that pairs spiritual elevation with timeless geometric elegance.

    This authentic piece, along with many other natural treasures, is proudly offered by letsbuygems.com, your trusted partner for certified, natural gems.

    Type

    Natural Yellow Sapphire

     Specification

    Ceylon Yellow Sapphire, Rectangle Step Cut

    Weight

    1.70 Carats 

    Mohs Scale (Absolute Hardness)

    9 

    Refractive Index

    1.76 

    Specific Gravity

    3.99

    Dimensions 

    7.5mm x 6.1mm x 3.7mm

    Colour

    Yellow

    Clarity

    Transparent, Natural Inclusions

    Cut

    Rectangle Step Cut 

    Treatment

    No Treatment

    Origin

    Sri Lanka (Ratnapura)

    Certification

    On Demand

    Packaging

    Loose Gem box packaging

    Ideal Uses

    Collection, Ring, Bracelet, Pendant etc.

    Unique Features

    Soothing colour & Untreated