Spinel 3.73 ct | Cushion | Grey Blue | Ratnapura, Sri Lanka

SKU: SLS064 Category: Tag: Est. Retail Value: USD $3580

Elegant Grey Blue Spinel of 3.73 ct from Ratnapura, Sri Lanka, cut in a classic cushion shape. With its refined blue-grey tone and attractive size, this gemstone is well suited for a distinctive ring, pendant, or a fine spinel collection.

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Description

This 3.73 ct Spinel from Ratnapura, Sri Lanka, combines a timeless cushion cut with a sophisticated grey blue color. Sri Lanka is one of the world’s most respected sources for fine spinel, and Ratnapura is especially known for producing gemstones with attractive natural colors and strong overall appeal. This stone offers an elegant balance of individuality, wearability, and collector interest.

The color shows a refined grey blue appearance with a calm and understated character. Unlike brighter or more saturated blue gems, this spinel stands out through its subtle, modern tone and distinctive personality. The soft blend of blue and grey gives it a more tailored and contemporary look, making it especially appealing for buyers who appreciate unusual color nuances and elegant restraint.

Its cushion cut gives the gemstone a classic outline with softly rounded corners, combining timeless charm with a balanced face-up appearance. This shape suits the color particularly well, giving the stone a graceful presence while maintaining versatility for different jewelry styles. A cushion-cut spinel of this size is especially suitable for statement rings, elegant pendants, and bespoke fine jewelry where color and character are meant to take center stage.

At 3.73 ct, this spinel has an impressive size that offers strong visual presence while remaining highly wearable. It is large enough to become the centerpiece of a refined jewelry design and also attractive for collectors looking for spinels with uncommon and sophisticated color. Set in white gold or platinum, the grey blue tone appears crisp and contemporary; in yellow or rose gold, it gains a richer and more distinctive contrast.

A fine grey blue Spinel from Ratnapura with elegant size, classic cushion proportions, and a sophisticated natural color—well suited for bespoke jewelry and carefully selected gemstone collections.

Additional Information

Certification Options

Every gemstone purchased from Gem Fountain includes a free Gem Fountain Gemstone Report, provided as a PDF file, documenting the key characteristics and authenticity of the stone.

For customers who require independent laboratory verification, we offer the option to add third-party gemstone reports. Upon selection, the gemstone will be submitted to the chosen accredited gemological laboratory. Estimated fees and processing times are as follows:

  • BGL – Brief Report: USD 19
    Processing time: approximately 1–2 business days
  • AIG – Brief Report: USD 38
    Processing time: approximately 7–8 business days
  • LOTUS – Soft Cover Report: USD 128
    Processing time: approximately 7–8 business days

All external reports are optional and can be selected as an add-on prior to shipment. Processing times may vary slightly depending on laboratory workload.

Shipping & Payment

All gemstones are shipped directly from Thailand, one of the world’s leading gemstone trading hubs. We deliver to almost all countries worldwide, using reliable and insured shipping partners to ensure safe and secure delivery. Each order is carefully packaged, and tracking details are provided once the shipment has been dispatched. Delivery times may vary depending on destination and local customs procedures. Any applicable duties, taxes, or import fees are the responsibility of the recipient.

We offer flexible payment options to accommodate our international clientele. Most common payment methods are accepted at checkout. Customers who choose to pay via wire transfer (Wise) receive a 5% discount, which can be selected directly during the checkout process.

Specification

Overview
Total Carat3.73 ct / 1 pcs
Region / MineRatnapura
Country of OriginSri Lanka
Saturation / ToneMedium Deep
Shadegray
ColorBlue
TransperencyTransparent
Stone TypeType II
ClarityEC
Dimensions 1 (L/W/H)10.60 x 7.50 x 6.15 mm
Untreated

No indication of artificial enhancement.

Read more about common gemstone treatments →
Refractive Index 1.712 – 1.736 / average = 1.719
Birefringence none / isotropic
Hardness (Mohs) 8.0
Gravity 3.58 – 3.65
Crystal System Cubic
Chemical Formular Magnesium-Aluminat – MgAl₂O₄