Natural Light Brownish Yellow Diamond - 0.50ct Round Brilliant

Name: Natural Light Brownish Yellow Diamond - 0.50ct Round Brilliant
Brand: The Collector
Availability: LimitedAvailability

AIG certified 0.50 carat round brilliant natural diamond in a blister pack with accompanying gemological report. - view 1

1/3

Estimated value

$250 - $450

Rarity

Average(4/10)

NATURAL LIGHT BROWNISH YELLOW DIAMOND - 0.50CT ROUND BRILLIANT: IDENTIFICATION

A natural 0.50 carat round brilliant cut diamond, sealed in an Antwerp International Gemological Laboratories (AIG) blister pack. The stone exhibits a Light Brownish Yellow hue and is documented with an SI1 clarity grade. The cut is classified as 'Excellent' by the issuing lab, following the proportions suggested by Marcel Tolkowsky. Physical measurements recorded are 5.00 - 4.95 x 3.18 mm.

Compare with other gemstones in the archive: Natural Diamond - 0.45ct Round Brilliant (GWLAB Certified), 0.50 Carat Round Brilliant Diamond (AIG D2410518829), Natural Tanzanite - 4.51ct Pear Cut (IGE Certified).

GEOLOGICAL ORIGIN

The round brilliant cut was mathematically refined in 1919 by Marcel Tolkowsky, whose proportions were designed to maximize the play of light. This specific stone was certified on March 14, 2024, by AIG, a secondary-tier gemological laboratory frequently utilized in the European and Israeli ...

SCARCITY

Average55-70%

CommonLegendary

Typical antique shop fare. Requires some searching but regularly available. This is where most genuine antiques fall.

Rarity 4/10. Curiosa currently catalogues 6 gemstones items at rarity 4 or higher.

Typical Characteristics

Standard antique shop items
Regularly available
Moderate collector interest

Confidence Factors

The item is sealed in a recognized third-party laboratory blister pack
Certification numbers and QR codes are present for online verification
Grading discrepancies between laboratory tiers (AIG vs GIA) are common in this market segment

How does authenticity detection work?

GEMOLOGIST'S TAKE

Gemologist & Mineral Specialist

Gemologist

Confidence is high due to the presence of a complete gemological report and matching sealed blister pack, though laboratory tier limits absolute certainty of strict GIA-equivalent grading.

KEY EVIDENCE

1Identification matches AIG Report No. D2410325623
2Weight confirmed at 0.50 carats on both seal and paper report
3Color/Clarity SI1 / Light Brownish Yellow visible in the clear blister
4Faceting displays characteristic 57/58 facet brilliant pattern

UNCERTAINTIES

•Secondary-tier laboratory certificates sometimes grade more leniently than GIA
•Blister seals can be tampered with, though this example appears intact

WHAT WOULD IMPROVE CERTAINTY

→Verify the report number on the official AIG (Antwerp International Gemological Laboratories) website
→Consult a local jeweler for a professional viewing under 10x magnification to confirm SI1 characteristics

CONDITION & GRADE

Grading breakdown

The stone is pre-graded by AIG as SI1 (Slightly Included) and Light Brownish Yellow. Grading by non-tier-1 laboratories (GIA/AGL) may show variation of 1-2 grades in color or clarity.

Condition

The diamond remains in its original tamper-evident AIG laboratory sealing. No visible surface-reaching fractures or abrasions are detectable through the blister pack.

GEMSTONE VALUATION

$250 - $450

Updated: May 11, 2026

Who buys this

Value-conscious retail consumers and secondary market jewelry designers seeking documented natural stones.

What increases value

•Excellent cut grade according to Tolkowsky standards
•Full laboratory certification with tamper-evident seal
•Natural (non-synthetic) provenance statement

What lowers value

•Yellow/Brown secondary hues usually trade at a significant discount to near-colorless stones
•AIG certification is not as liquid as GIA certification in the resale market