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| Price | Negotiate |
| MOQ | Negotiate |
| Delivery Time | 1-7 Working Days Depends On Quantity |
| Brand | YUDA CRYSTAL |
| Place of Origin | Zhengzhou, China |
| Certification | None |
| Model Number | YD-A+ |
| Packaging Details | Carton box |
| Payment Terms | 100% Payment In Advance |
| Supply Ability | 50000carats per month |
| Shape | Round Brilliant Cut | Customization | Welcome |
| Packaging Details | Carton box | Supply Ability | 50000carats per month |
| Place Of Origin | Zhengzhou, China | Technology | HPHT |
| Minimum Order Quantity | Negotiate | Component | Carbon |
| Courier | DHL, FedEx, UPS, TNT, EMS etc | Enhancement | None |
| Payment Mode | T/T, Bank Transfer, PayPal, Western Union | Symmetry | Excellent, VeryGood, Good |
| Usage | For Making Lab Diamonds Jewelry ( Rings, Earring, Necklace etc ) | Place of Origin | Zhengzhou, China |
| Cut | Ideal, Excellent, VeryGood, Good | Polish | Excellent, VeryGood, Good |
| Available Type | HPHT | Product Name | HPHT CVD Diamonds Loose Diamonds |
| Color | DEF | Grade | High |
| Treatments Applied | None | Model Number | YD-A+ |
| Hardness | Moh's 10 Scale | Sample Order | Welcome |
| Clarity | VVS VS | Certification | None |
| Brand Name | YUDA CRYSTAL | Payment Terms | 100% Payment In Advance |
| Brand | Yuda Crystal | Assortment | Good |
| Price | Negotiate | Delivery Time | 1-7 Working Days Depends On Quantity |
| Packaging | As Export Standard | Carat Weight | 0.4ct, 0.5ct 1.0ct |
0.40ct 0.50ct 1.0ct D-E-F Color VVS VS SI Clarity HPHT Diamonds Loose Diamonds
HPHT Diamonds Description
Lab
Grown
Diamonds,
also
known
as
man
made
diamonds,
cultured
diamonds
and
lab
created
diamonds,
are
grown
in
a
highly
controlled
laboratory
environment
using
advanced
technology.
Although
laboratory-grown
diamonds
are
formed
in
different
environments
and
conditions
from
natural
diamonds,
both
natural
diamonds
and
lab
diamonds
are
crystals
composed
of
pure
carbon,
and
the
physical
properties,
chemical
properties,
crystal
structure
and
optical
properties
of
the
two
are
the
same.
Both
lab
grown
diamonds
and
mined
diamonds
are
real
diamonds.
Can
we
distinguish
between
laboratory
grown
diamonds
and
natural
diamonds?
Yes
it
is.
However,
only
diamond
professionals
can
identify
the
difference
between
laboratory
grown
diamonds
and
natural
diamonds
by
using
professional
diamond
identification
equipment.
HTHP
and
CVD
are
the
two
main
methods
for
making
laboratory-grown
diamonds.
High
temperature
and
high
pressure
method
(HTHP)
uses
graphite
as
raw
material.
HPHT
diamonds
are
manufactured
at
a
pressure
of
5-6
GPA
(approximately
the
pressure
produced
by
a
commercial
jet
landing
on
a
human
fingertip)
and
a
temperature
of
1300-1600°C.
CVD
diamonds
come
from
various
gases,
such
as
methane.
They
are
stored
in
a
vacuum
chamber,
which
decomposes
the
molecules
of
the
gas,
and
then
these
molecules
gather
on
the
pre-existing
diamond
seeds.
Parameters of HPHT CVD Diamonds
| Lab Grown Diamonds Details | |
| Brand Name | Yuda Crystal |
| Name | Lab Grown Melee Diamonds |
| Diamond Color | DEF |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 0.4-1.0 carat |
| Diamond Cut | Excellent, Very Good,Good |
| Polish | Excellent, Very Good,Good |
| Symmetry | Excellent, Very Good,Good |
| Technology | HPHT |
| Size | 4mm - 7mm |
| Shape | Round |
| Diamond Enhancement | None |
| Available Type | HPHT |
| Diamond Certificate | None |
| Application | Jewelry Decorations Rings Earring Necklace |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 7 Working Days Base on Order Quantity |
| Payment Terms | 100% Payment In Advance |
| Payment Methods | T/T, PayPal, Western Union, Bank Transfer |
| Shipping way | DHL, FedEx, SF Express, UPS, EMS, TNT etc |
| M.O.Q | Negotiable |
| Diamond Type | Synthetic(lab created) |
| Location | Zhengzhou, China |
| Treatments Applied | None |
| Fire Dispersion | 0.044(Same as Natural Diamond) |
| Brilliance Refraction Index | 2.42(Same as Natural Diamond) |
| Relative Density | 3.52(Same as Natural Diamond) |
| Chemical Composition | Carbon(Same as Natural Diamond) |
| Moh's Hardness | 10(Same as Natural Diamond) |
HPHT CVD Diamonds Introduction
Natural diamonds are created by nature and are the result of high temperature and pressure formed over billions of years. The Lab Grown Diamonds are produced in the laboratory, usually in a few weeks. The chemical difference between the two is same.
So how do you distinguish between Lab Grown Diamonds and natural diamonds?
There is no obvious difference between the Lab Grown Diamonds and natural diamonds. Even professional gemologists need special equipment to identify them. By zooming in, professionals will be able to discern subtle contrasts in diamond inclusions grown and mined in the laboratory.
| The Difference Between Lab Diamond And Natural Diamond | ||
| Properties | Earth Mined | Lab Created |
| Guaranteed Conflict-Free | No | Yes |
| Hardness (MOHS) | 10 | 10 |
| SP3 Carbon Diamond Bonds (%) | 100% | 100% |
| Internal Crystal Structure | Face-Centered Cubic | Face-Centered Cubic |
| Hardness Comparable | 2.42 | 2.42 |
| Relative Diversity | 3.52 | 3.52 |
| Color Diffusion | 0.044 | 0.044 |
| Color | Various Grades | K to D grades |
| Price | $$$$$ | $$$ |
HPHT CVD Diamonds Details
