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Cushion|Lab Grown|IGI

1.00ct D SI2 Cushion Lab Grown Diamond

GD • D/SI2 • IGI LG500148231

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG500148231

Diamond specifications and retailer prices

From $415 NZD
As of November 6, 2026
Save $1,590 NZD (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,005 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG500148231 or 500148231. Listed at 6 retailers as of November 5, 2026, with prices from $415 to $2,005, a $1,590 spread on the same certified stone. MOH London lists it at $2,005. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle29.1°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500148231
Dimensions6.19 × 5.65 × 3.42 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.19 mm5.65 mm1.00 ctD / SI2
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG500148231
Side View
Table 59.0%Crown 29.1°Girdle: STK-THKPavilion 32.4°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,005 NZD|Low: $415 NZD|High: $2,034 NZD|Avg: $990 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$415 NZD
Retailer 3$722 NZD
Retailer 4$788 NZD
Retailer 2$922 NZD
Retailer 5$1,016 NZD
MOH London$2,005 NZD

43 data points across 6 retailers

6 retailers$415 NZD to $2,005 NZD

B+
Cheapest Retailer
-
$415 NZD
B+
Retailer 2
-
$722 NZD
View
B+
Retailer 3
-
$788 NZD
View
B
Retailer 4
-
$922 NZD
View
B
Retailer 5
-
$1,016 NZD
View
Most Expensive
C
MOH London
LG500148231 · Nov 5
$2,005 NZD
£875 GBP
View
5 more retailers have this diamond
Prices start from $415 NZDSave up to $1,590 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.00ct Cushion
$415 NZD