Jewelry Education
Understanding the craftsmanship and materials behind your eternal pieces.
The 4 C's of Diamonds
Color
Diamond color is graded on a scale from D (colorless) to Z (light yellow). The less color a diamond has, the more rare and valuable it is.
D
COLORLESS
E
COLORLESS
F
COLORLESS
G
NEAR COLORLESS
H
NEAR COLORLESS
I
NEAR COLORLESS
J
NEAR COLORLESS
K
FAINT YELLOW
L
FAINT YELLOW
M
FAINT YELLOW
Fancy Colored Diamonds
While the D-Z scale grades the absence of color, nature also produces "Fancy Colored Diamonds" in shades of yellow, pink, blue, green, and more. Unlike white diamonds, these rare gems are valued for the intensity and saturation of their color.
COMMON FANCY COLORS
Yellow
Pink
Blue
Orange
Green
Brown
COLOR INTENSITY SCALE
Clarity & Inclusions
Clarity refers to the absence of internal characteristics (inclusions) and external blemishes. Inclusions are natural "birthmarks" inside the diamond.
IF
Internally Flawless
VVS
Very Very Slightly Included
VS
Very Slightly Included
SI
Slightly Included
Cut & Shapes
A diamond's cut determines how it interacts with light. An excellent cut unleashes the stone's fire and brilliance. While 'Cut' refers to quality, 'Shape' refers to the silhouette (Round, Oval, etc).
Round
Oval
Princess
Emerald
Cushion
Asscher
Marquise
Heart
Pear
CUT QUALITY SCALE
Carat Weight
Carat refers to the unique weight of the diamond. One carat is exactly 0.20 grams. While carat weight influences size, the cut proportions also play a significant role in how large the stone appears.
Natural vs. Lab-Grown Diamonds
EARTH-MINED
Natural Diamonds
Formed over 1–3 billion years, 150km beneath the earth's surface
Each stone is unique — no two are identical in nature
Carry exceptional heirloom and resale value
Scarcity drives long-term appreciation
A symbol of geological rarity and permanence
LABORATORY-GROWN
Lab-Grown Diamonds
Structurally and chemically identical to natural diamonds
Created using CVD or HPHT processes in controlled environments
Allows for larger carat sizes at a more accessible price point
A modern, technology-forward choice
Precious Gemstones
Beyond diamonds, the world of coloured gemstones is one of extraordinary beauty and individuality. No two stones are ever the same.
Ruby
Burma (Myanmar) · Mozambique · Sri Lanka
The "King of Gems." No stone rivals the intensity of a fine ruby. Its signature pigeon-blood red glows from within, caused by traces of chromium. The richer and more saturated the colour, the more precious. Every ruby is entirely unique: untreated stones of exceptional hue are among the rarest objects on earth, and their colour can never be replicated.
Sapphire
Kashmir · Ceylon (Sri Lanka) · Madagascar
Few colours in nature match the depth of a fine sapphire. From the velvety, dreamlike cornflower-blue of Kashmir to the brilliant, vivid tones of Ceylon, each origin produces an entirely distinct character. Beyond blue, sapphires occur in virtually every colour of the spectrum, known as 'fancy' sapphires. No two are alike in hue, saturation, or the way they capture light.
Emerald
Colombia · Brazil · Zambia
Emeralds carry a living, breathing green unlike any other stone. Each one contains a "Jardin" (French for garden), a unique network of inclusions that acts as a fingerprint, making every emerald one of a kind. Colombian emeralds set the world standard for colour intensity, while Zambian stones offer a cooler, deeply saturated green. The soul of an emerald lies in its individuality.
Exclusively 18K Gold
We have made the conscious choice to craft our jewelry exclusively in 18 Karat Gold (75% pure gold). 18k gold is the premium standard for fine jewelry, offering the perfect equilibrium between the rich warmth of pure gold and strength.
Purity
Higher gold content (75%) provides a richer, more vibrant color.
Value
A more valuable investment that retains its worth over time.
Quality
The preferred choice for high-end jewelry and heirlooms.
Yellow Gold
The classic choice. Pure gold mixed with silver and copper for a warm, sunny glow.
White Gold
Modern and bright. Gold mixed with palladium or nickel, then rhodium plated for brilliance.
Rose Gold
Romantic and vintage. Created by increasing the copper content for a soft pink hue.
Platinum
For those seeking the ultimate in rarity and purity, we also offer Platinum (PT950).
Naturally white and will not fade or tarnish over time.
Hypoallergenic and ideal for sensitive skin.
Denser and heavier than gold, providing a luxurious feel.
Ready to select your stone?
SÉLIA
Diamond Consultation
SÉLIA
Begin Your Bespoke
Journey
SÉLIA
The Gift of Sélia
SÉLIA
ANTWERP · EST. 1980
Gift Card
BESPOKE JEWELRY
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Redeemable for any consultation, bespoke creation, or existing piece.
Valid indefinitely. No expiry date.