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

Type

Shape

Color

Price & Carat

Sapphire

Ruby

Alexandrite

Emerald

Padparadscha

Aquamarine

Spinel

Garnet

Peridot

Tourmaline

Tanzanite

Citrine

Quartz

Chrysoberyl

Apatite

Topaz

Amethyst

Lolite

Zircon

Sinhalite

Cats Eye

Opal

Red

Dark Red

Light Pink

Hot Pink

Deep Pink

Pale Violet Red

Dark Orange

Yellow

Light Yellow

Light Goldenrod Yellow

Pale Goldenrod

Purple

Dark Slate Blue

Forest Green

Dark Green

Light Blue

Cornflower Blue

Blue

Dark Blue

Saddle Brown

White

Alice Blue

Floral White

Lavender Blush

Cobolt

Star

Vivid Green

Light green to Brownish Yellow

Pinkish Red

Filters

Type

Sapphire

Ruby

Alexandrite

Emerald

Padparadscha

Aquamarine

Spinel

Garnet

Peridot

Tourmaline

Tanzanite

Citrine

Quartz

Chrysoberyl

Apatite

Topaz

Amethyst

Lolite

Zircon

Sinhalite

Cats Eye

Opal

Shape

Oval ✓

Round ✓

princess ✓

Marquise ✓

Emerald ✓

Radiant ✓

Heart ✓

Pear ✓

Asscher ✓

Cushion ✓

Fancy Cushion ✓

Antique Cushion ✓

Color

Red ✓

Dark Red ✓

Light Pink ✓

Hot Pink ✓

Deep Pink ✓

Pale Violet Red ✓

Dark Orange ✓

Yellow ✓

Light Yellow ✓

Light Goldenrod Yellow ✓

Pale Goldenrod ✓

Purple ✓

Dark Slate Blue ✓

Forest Green ✓

Dark Green ✓

Light Blue ✓

Cornflower Blue ✓

Blue ✓

Dark Blue ✓

Saddle Brown ✓

White ✓

Alice Blue ✓

Floral White ✓

Lavender Blush ✓

Cobolt ✓

Star ✓

Vivid Green ✓

Light green to Brownish Yellow ✓

Pinkish Red ✓

Price & Carat

Price Range $1 – $35000

Carat Weight 0 – 43 ct

Advanced

Treatment

Origin

Certification

Clarity

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Precious & Semi-precious Gems

💎

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

💎

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

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

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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Filters

Every gem has a story to tell

Precious & Semi-precious Gems

Understanding Gemstone Cuts

Frequently Asked Questions