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Cushion|Lab Grown|IGI

1.05ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689561794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689561794

Diamond specifications and retailer prices

From $346 NZD
$195 USD
As of October 28, 2026
Save $1,629 NZD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,975 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG689561794 or 689561794. Listed at 13 retailers as of October 28, 2026, with prices from $346 to $1,975, a $1,629 spread on the same certified stone. Reve Diamonds lists it at $1,975. 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

1.05
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561794
Dimensions7.05 × 5.48 × 3.60 mm
L/W Ratio1.29
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
7.05 mm5.48 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561794
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.7%

Caratlytics Score

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

Price History

Last verified: Oct 28
Current: $683 NZD|Low: $342 NZD|High: $1,975 NZD|Avg: $973 NZD|+4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 2, 2026
Retailer 12$346 NZD
Retailer 8$623 NZD
Retailer 1$683 NZD
Retailer 11$685 NZD
Retailer 4$713 NZD
Retailer 6$740 NZD
Retailer 9$814 NZD
Retailer 7$958 NZD
Retailer 10$1,010 NZD
Retailer 3$1,082 NZD
Retailer 2$1,333 NZD
Retailer 5$1,798 NZD
Reve Diamonds$1,975 NZD

42 data points across 13 retailers

13 retailers$346 NZD to $1,975 NZD

A
Cheapest Retailer
-
$346 NZD
$195 USD
Final sale: no returns
A
Retailer 2
-
$623 NZD
$351 USD
View
A
Retailer 3
-
$683 NZD
£303 GBP
View
A
Retailer 4
-
$685 NZD
$386 USD
View
B+
Retailer 5
-
$740 NZD
€397 EUR
View
B+
Retailer 6
-
$814 NZD
$459 USD
View
B+
Retailer 7
-
$958 NZD
$540 USD
View
Retailer 8
-
$1,007 NZD
$568 USD
View
Price last confirmed 84 days ago
B
Retailer 9
-
$1,010 NZD
$569 USD
View
B+
Retailer 10
-
$1,082 NZD
$610 USD
View
B
Retailer 11
-
$1,333 NZD
$751 USD
View
B
Retailer 12
-
$1,798 NZD
£798 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Nov 1
$1,975 NZD
$1,113 USD
View
12 more retailers have this diamond
Prices start from $346 NZDSave up to $1,629 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
1.05ct Cushion
$346 NZD