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Gemstone Live Price Engine
Normalized per‑carat pricing from recent eBay sold listings. Filter by type, shape, and size.
Funds‑first • Zero‑touch
Trust badges • Emoji UI
Filters and query
All payments routed via PayPal for pro analytics.
Gemstone type
Sapphire
Ruby
Emerald
Spinel
Tourmaline
Aquamarine
Amethyst
Alexandrite
Topaz
Garnet
Shape
Oval
Round
Pear
Emerald cut
Cushion
Princess
Marquise
Heart
Trillion
Size (mm)
Timeframe (days)
7
30
90
Material
Natural
Lab‑grown
Any
Treatment
Any
Untreated
Heated
Oiled
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Tip: Use exact mm (e.g., “7x5”) to tighten comps. Mixed lots and cabochons are auto‑excluded.
Price snapshot
Median per carat
$—
IQR per carat
$—
Trimmed mean
$—
Valid comps
—
Confidence
—
Sold date
Per carat (USD)
Total (USD)
Size / Carat
Shape / Type
Source
Run a query to load recent sales…
Outliers removed with IQR filter; lots and unverifiable sizes excluded.
History and swing alerts
30–90 day snapshots
Week‑over‑week deltas
Pro users get historical charts and alerts when price bands move beyond thresholds.
🔓 Pro analytics: IQR bands, trimmed means, liquidity, alerts & webhooks
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Gamified tutorial
Earn badges for clean queries
1
Clean size in mm:
Enter “7x5” or “8x6” — we validate and bucket to reduce noise.
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2
Pick a shape:
Oval, round, pear, cushion… mixed cuts are filtered out.
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3
Material & treatment flags:
Natural vs. lab, untreated vs. heated. We surface these in comps.
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4
Trust badges:
Verified mm, single‑stone, outliers removed — higher confidence scores earn streaks.
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