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Cushion|Lab Grown|IGI

1.60ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG487193650

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

Certificate IGI LG487193650

Diamond specifications and retailer prices

From $378 NZD
$213 USD
As of November 1, 2026
Save $2,869 NZD (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,247 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.6ct lab-grown cushion diamond

This 1.6ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG487193650 or 487193650. Listed at 12 retailers as of October 31, 2026, with prices from $378 to $3,247, a $2,869 spread on the same certified stone. Do Amore Diamonds lists it at $3,247. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.60
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487193650
Dimensions6.81 × 6.77 × 4.57 mm
L/W Ratio1.01
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
6.81 mm6.77 mm1.60 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487193650
Side View
Table 60.5%Crown 33.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 67.5%

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: Nov 1
Current: $1,852 NZD|Low: $378 NZD|High: $3,105 NZD|Avg: $1,332 NZD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8$378 NZD
Retailer 7$419 NZD
Retailer 4$747 NZD
Retailer 2$853 NZD
Retailer 9$1,015 NZD
Retailer 5$1,543 NZD
Retailer 6$1,828 NZD
Retailer 1$1,852 NZD
Retailer 3$3,105 NZD

41 data points across 9 retailers

12 retailers$378 NZD to $3,247 NZD

A
Cheapest Retailer
-
$378 NZD
$213 USD
Final sale: no returns
Retailer 2
-
$419 NZD
$236 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$562 NZD
$317 USD
View
A
Retailer 4
-
$747 NZD
€401 EUR
View
A
Retailer 5
-
$772 NZD
$435 USD
View
A
Retailer 6
-
$853 NZD
£379 GBP
View
A
Retailer 7
-
$1,015 NZD
$572 USD
View
B+
Retailer 8
-
$1,543 NZD
$869 USD
View
Retailer 9
-
$1,828 NZD
$1,030 USD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
$1,852 NZD
£822 GBP
View
B
Retailer 11
-
$3,105 NZD
$1,750 USD
View
Most Expensive
B
Do Amore Diamonds
27-7B52CA9F4 · Oct 31
$3,247 NZD
$1,830 USD
View
11 more retailers have this diamond
Prices start from $378 NZDSave up to $2,869 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
1.60ct Cushion
$378 NZD