Name: Seylan Gems & Jewelry, LLC.
Address: 15021 Ventura Boulevard, Suite 1050, Sherman Oaks, CA, 91403, US
Telephone: +1(888)311-7133
Price range: $$$
Rating: 4.5

View Gems in 360° — Every facet online Certified Natural Gems — Lab verified Conflict-Free Sourcing — Ethically selected Secure Checkout — 256-bit SSL View Gems in 360° — Every facet online Certified Natural Gems — Lab verified Conflict-Free Sourcing — Ethically selected Secure Checkout — 256-bit SSL

Book a Consult +1(888)311-7133 info@seylangem.com

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360° Gem Views Inspect every facet online
Lab-Verified Certified natural gemstones
Conflict-Free Ethically sourced stones
Secure Checkout Encrypted payments
Gem Experts Book a consult

Type

Shape

Color

Price & Carat

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Shape

Oval ✓

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princess ✓

Marquise ✓

Emerald ✓

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Asscher ✓

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Fancy Cushion ✓

Antique Cushion ✓

Color

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Price & Carat

Price Range $1 – $35000

Carat Weight 0 – 43 ct

Advanced

Treatment

Origin

Certification

Clarity

2 Products

Showing 1 - 2 of 2

20% off

1.2ct Floral White Sapphire VVS Oval Shape (7.0x5.9x3.7 mm) Unheated gemstone from Sri Lanka

1.2 ct 184702611

$399.00 ~~$499.00~~

1.8ct White Sapphire VVS Emerald Shape (9.3x4.5x4 mm) Unheated gemstone from Sri Lanka

1.8 ct 189769065

$999.00

Ceylon Gemstones

Every gem has a story to tell

Gemstones are among nature's rarest creations — formed over millions of years deep within the earth. Each piece in our collection is ethically sourced, expertly cut, and independently certified.

Our Collection

Precious & Semi-precious Gems

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Blue Sapphire

Corundum · Hardness 9 · Cornflower to royal blue

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Ruby

Corundum · Hardness 9 · Deep red to pinkish red

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Emerald

Beryl · Hardness 7.5 · Vivid green

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Yellow Sapphire

Corundum · Hardness 9 · Lemon to golden yellow

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Alexandrite

Chrysoberyl · Hardness 8.5 · Color-change gem

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Pink Sapphire

Corundum · Hardness 9 · Blush to vivid pink

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Aquamarine

Beryl · Hardness 7.5 · Pale to deep sea blue

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Cat's Eye

Chrysoberyl · Hardness 8.5 · Chatoyancy effect

Gem Cutting

Understanding Gemstone Cuts

Round Brilliant

Maximum light return, 58 facets

Oval

Elongated, elegant silhouette

Cushion

Soft corners, vintage appeal

Emerald Cut

Step-cut, open clarity window

Pear / Teardrop

Unique, lengthening effect

Marquise

Boat-shaped, maximises carat

Buyer's Guide

Frequently Asked Questions

Natural (unheated) gems are entirely untreated — their color and clarity are exactly as formed by nature. Heated gems have been carefully heat-treated to enhance color or clarity, which is a widely accepted and permanent industry practice. Unheated stones typically carry a premium and are certified accordingly.

Carat (ct) is a unit of mass — 1 carat equals 0.2 grams. Because different gem species have different densities, two stones of equal carat weight can appear slightly different in size. Always check both the carat weight and millimetre dimensions when purchasing.

For high-value purchases, look for reports from internationally recognised labs such as GIA (Gemological Institute of America), AGL (American Gemological Laboratories), or GRS (Gem Research Swisslab). These reports confirm the species, origin, and treatment status of a stone. We include a certificate scan in every product listing.

Gemstones are graded on color, clarity, cut, and carat weight — the 4Cs. Color is the most important factor for colored stones. Clarity refers to the presence of inclusions or blemishes visible under magnification. Eye-clean stones (no inclusions visible to the naked eye) are generally more desirable and valuable.

Most gemstones can be cleaned with warm water and a mild soap using a soft brush. Avoid ultrasonic cleaners for stones with inclusions or any treated gems. Store pieces separately in soft pouches to prevent scratching, and remove jewellery before swimming in chlorinated water or handling harsh household chemicals.

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Every gem has a story to tell

Precious & Semi-precious Gems

Understanding Gemstone Cuts

Frequently Asked Questions