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Cushion|Lab Grown|IGI

1.83ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG817682190

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG817682190

Diamond specifications and retailer prices

From $1,290 NZD
$727 USD
As of November 1, 2026
Save $5,310 NZD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,600 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.83ct lab-grown cushion diamond

This 1.83ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817682190 or 817682190. Listed at 8 retailers as of October 31, 2026, with prices from $1,290 to $6,600, a $5,310 spread on the same certified stone. Brilliant Earth lists it at $6,600. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817682190
Dimensions7.21 × 7.21 × 4.36 mm
L/W Ratio1.00
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
7.21 mm7.21 mm1.83 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817682190
Side View
Table 58.0%Crown 33°Girdle: MED-STKPavilion 32.6°Culet: NoneDepth 60.5%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 1
Current: $6,600 NZD|Low: $1,153 NZD|High: $9,759 NZD|Avg: $3,266 NZD|-32.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$1,290 NZD
Retailer 2$1,322 NZD
Retailer 6$1,327 NZD
Retailer 8$1,917 NZD
Retailer 4$1,934 NZD
Retailer 3$2,037 NZD
Retailer 7$3,283 NZD
Brilliant Earth$6,600 NZD

29 data points across 8 retailers

8 retailers$1,290 NZD to $6,600 NZD

A+
Cheapest Retailer
-
$1,290 NZD
$727 USD
A
Retailer 2
-
$1,322 NZD
$745 USD
View
A
Retailer 3
-
$1,327 NZD
$748 USD
View
Retailer 4
-
$1,917 NZD
€1,029 EUR
View
Price last confirmed 7 days ago
A
Retailer 5
-
$1,934 NZD
A$1,677 AUD
View
A
Retailer 6
-
$2,037 NZD
$1,148 USD
View
B+
Retailer 7
-
$3,283 NZD
£1,457 GBP
View
Most Expensive
B
Brilliant Earth
20711726A · Oct 31
$6,600 NZD
$3,720 USD
View
7 more retailers have this diamond
Prices start from $1,290 NZDSave up to $5,310 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+
1.83ct Cushion
$1,290 NZD