BLACK DIAMOND
CORE JEWELS uses only the highest quality black diamonds selected from those that symbolize an "untainted" existence for its EXCEPTIONAL BLACK line.
Corejewels Diamond Quality 001
EXCEPTIONAL BLACK
At Core Jewels, we have established four appraisal criteria: color, cut, presence of scratches, and shine, and evaluate the grade in three stages: [EXCEPTIONAL BLACK], [RARE BLACK], and [BLACK], and only [EXCEPTIONAL BLACK], which is the highest standard, is used. We carefully select and use.
Corejewels Diamond quality 002
GEM REPORT
A gem identification certificate is a document that documents the type of stone that has been scientifically tested. Core Jewels certifies that the stone is a diamond by attaching an identification certificate issued by a specialized institution.
*Gemstone identification certificates will be issued free of charge for diamonds 0.3 carats or more (0.2 carats for engagement rings only) and bead diamonds 5.0 carats or more.
WHITE DIAMOND
The white diamonds used by CORE JEWELS are carefully selected, not only meeting high grades according to the international "4Cs" standard, but also possessing the inherent individuality and brilliance of diamonds that cannot be expressed by numerical values alone.
Corejewels Diamond quality 001
4C
The international appraisal standards [4C] applied to diamonds consist of four items: weight = carat, polishing technique = cut, transparency = clarity, and color = color.
Corejewels Diamond quality 002
CARAT
Carat (ct) is a unit of measurement of diamond weight, and 1 carat = 0.2 grams.
Corejewels Diamond quality 003
CUT
Cutting is the only manual technique used to bring out the brilliance of a diamond, and it is graded based on polishing, symmetry, and proportion, and at Core Jewels we only use high-grade diamonds that fall under [Triple Excellent], [Excellent], and [Very Good]. Doing.
Corejewels Diamond Quality 004
CLARITY
Clarity is the transparency of a diamond, determined by the size, location, and number of surface flaws and inclusions. At Core Jewels, we use the [IF] class, which has extremely high clarity, and the [VS2] class, which makes it difficult to detect inclusions even with the naked eye or even with 10x magnification.
Corejewels Diamond Quality 005
COLOR
As a guide for diamond color, DEF = colorless and transparent, GHIJ = almost colorless, KLM = faint yellow, NR = very light yellow, and SZ = pale yellow. Core Jewels uses classes [D] to [H].