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Cushion|Lab Grown|IGI

1.20ct E FL Cushion Lab Grown Diamond

VG • E/FL • IGI LG830620137

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830620137

Diamond specifications and retailer prices

From $758 NZD
$427 USD
As of October 30, 2026
Save $3,135 NZD (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,893 NZD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.2ct lab-grown cushion diamond

This 1.2ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG830620137 or 830620137. Listed at 11 retailers as of October 30, 2026, with prices from $758 to $3,893, a $3,135 spread on the same certified stone. Helzberg Diamonds lists it at $3,893. 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

1.20
Carat
E
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830620137
Dimensions7.78 × 5.28 × 3.54 mm
L/W Ratio1.47
Girdle conditionFaceted
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
7.78 mm5.28 mm1.20 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830620137
Side View
Table 62.0%Crown 35.5°Girdle: STK-VTKPavilion 38.2°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,893 NZD|Low: $758 NZD|High: $4,507 NZD|Avg: $1,933 NZD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11$758 NZD
Retailer 8$890 NZD
Retailer 4$1,100 NZD
Retailer 5$1,251 NZD
Retailer 7$1,336 NZD
Retailer 9$1,457 NZD
Retailer 2$1,507 NZD
Retailer 3$2,672 NZD
Retailer 10$2,766 NZD
Retailer 6$3,158 NZD
Helzberg Diamonds$3,893 NZD

3 data points across 11 retailers

11 retailers$758 NZD to $3,893 NZD

A
Cheapest Retailer
-
$758 NZD
$427 USD
Final sale: no returns
A
Retailer 2
-
$890 NZD
£395 GBP
View
A
Retailer 3
-
$1,100 NZD
$620 USD
View
A
Retailer 4
-
$1,251 NZD
$705 USD
View
A
Retailer 5
-
$1,336 NZD
$753 USD
View
A
Retailer 6
-
$1,457 NZD
$821 USD
View
A
Retailer 7
-
$1,507 NZD
£669 GBP
View
B
Retailer 8
-
$2,672 NZD
SGD 2,035 SGD
View
B
Retailer 9
-
$2,766 NZD
$1,559 USD
View
B
Retailer 10
-
$3,158 NZD
$1,780 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJGMIGHJN · Oct 31
$3,893 NZD
$2,194 USD
View
10 more retailers have this diamond
Prices start from $758 NZDSave up to $3,135 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.

A
1.20ct Cushion
$758 NZD