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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689561775

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

Certificate IGI LG689561775

Diamond specifications and retailer prices

From $274 AUD
As of November 6, 2026
Save $1,314 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,588 AUD 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 LG689561775 or 689561775. Listed at 14 retailers as of November 6, 2026, with prices from $274 to $1,588, a $1,314 spread on the same certified stone. Reve Diamonds lists it at $1,588. 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 angle36.6°
Pavilion angle43.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561775
Dimensions6.04 × 6.01 × 3.97 mm
L/W Ratio1.00
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
6.04 mm6.01 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561775
Side View
Table 62.0%Crown 36.6°Girdle: MED-THKPavilion 43.7°Culet: NoneDepth 66.1%

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: $582 AUD|Low: $271 AUD|High: $1,588 AUD|Avg: $741 AUD|+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
Retailer 13
Reve Diamonds
November 6, 2026
Retailer 2$274 AUD
Retailer 13$303 AUD
Retailer 10$469 AUD
Retailer 6$531 AUD
Retailer 12$543 AUD
Retailer 1$582 AUD
Retailer 5$588 AUD
Retailer 11$653 AUD
Retailer 9$750 AUD
Retailer 7$796 AUD
Retailer 4$844 AUD
Retailer 3$1,052 AUD
Retailer 8$1,415 AUD
Reve Diamonds$1,588 AUD

45 data points across 14 retailers

14 retailers$274 AUD to $1,588 AUD

A
Cheapest Retailer
-
$274 AUD
Final sale: no returns
Retailer 2
-
$303 AUD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$469 AUD
View
A
Retailer 4
-
$531 AUD
View
A
Retailer 5
-
$543 AUD
View
B+
Retailer 6
-
$582 AUD
View
Retailer 7
-
$588 AUD
View
Price last confirmed 24 days ago
B+
Retailer 8
-
$653 AUD
View
B+
Retailer 9
-
$750 AUD
View
B+
Retailer 10
-
$796 AUD
View
B+
Retailer 11
-
$844 AUD
View
B
Retailer 12
-
$1,052 AUD
View
B
Retailer 13
-
$1,415 AUD
View
Most Expensive
B
Reve Diamonds
C99BFAB20 · Nov 6
$1,588 AUD
$1,091 USD
View
13 more retailers have this diamond
Prices start from $274 AUDSave up to $1,314 AUD

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
$274 AUD