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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689562249

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562249

Diamond specifications and retailer prices

From $339 NZD
As of November 6, 2026
Save $1,629 NZD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,968 NZD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct 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 LG689562249 or 689562249. Listed at 13 retailers as of November 6, 2026, with prices from $339 to $1,968, a $1,629 spread on the same certified stone. Reve Diamonds lists it at $1,968. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562249
Dimensions6.85 × 5.29 × 3.50 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
6.85 mm5.29 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562249
Side View
Table 61.0%Crown 34.8°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 66.2%

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: Nov 6
Current: $722 NZD|Low: $336 NZD|High: $1,968 NZD|Avg: $926 NZD|+10.2%
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 6, 2026
Retailer 12$339 NZD
Retailer 11$375 NZD
Retailer 8$581 NZD
Retailer 5$658 NZD
Retailer 10$673 NZD
Retailer 1$722 NZD
Retailer 4$729 NZD
Retailer 9$810 NZD
Retailer 7$987 NZD
Retailer 3$1,046 NZD
Retailer 2$1,304 NZD
Retailer 6$1,750 NZD
Reve Diamonds$1,968 NZD

44 data points across 13 retailers

13 retailers$339 NZD to $1,968 NZD

A
Cheapest Retailer
-
$339 NZD
Final sale: no returns
Retailer 2
-
$375 NZD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$581 NZD
View
A
Retailer 4
-
$658 NZD
View
A
Retailer 5
-
$673 NZD
View
B+
Retailer 6
-
$722 NZD
View
Retailer 7
-
$729 NZD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$810 NZD
View
B+
Retailer 9
-
$987 NZD
View
B+
Retailer 10
-
$1,046 NZD
View
B
Retailer 11
-
$1,304 NZD
View
B
Retailer 12
-
$1,750 NZD
View
Most Expensive
B
Reve Diamonds
2FD519CE2 · Nov 6
$1,968 NZD
$1,091 USD
View
12 more retailers have this diamond
Prices start from $339 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
1.00ct Cushion
$339 NZD