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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 $249 SGD
$195 USD
As of October 28, 2026
Save $1,174 SGD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,423 SGD 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 $249 to $1,423, a $1,174 spread on the same certified stone. Reve Diamonds lists it at $1,423. 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

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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: $1,296 SGD|Low: $247 SGD|High: $1,423 SGD|Avg: $701 SGD|+0.9%
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 1, 2026
Retailer 12$249 SGD
Retailer 8$449 SGD
Retailer 11$493 SGD
Retailer 5$496 SGD
Retailer 4$514 SGD
Retailer 6$533 SGD
Retailer 9$587 SGD
Retailer 7$690 SGD
Retailer 10$727 SGD
Retailer 3$780 SGD
Retailer 2$960 SGD
Retailer 1$1,296 SGD
Reve Diamonds$1,423 SGD

41 data points across 13 retailers

13 retailers$249 SGD to $1,423 SGD

A
Cheapest Retailer
-
$249 SGD
$195 USD
Final sale: no returns
A
Retailer 2
-
$449 SGD
$351 USD
View
A
Retailer 3
-
$493 SGD
$386 USD
View
A
Retailer 4
-
$496 SGD
£306 GBP
View
B+
Retailer 5
-
$533 SGD
€397 EUR
View
B+
Retailer 6
-
$587 SGD
$459 USD
View
Retailer 7
-
$690 SGD
$540 USD
View
Price last confirmed 14 days ago
Retailer 8
-
$726 SGD
$568 USD
View
Price last confirmed 84 days ago
B
Retailer 9
-
$727 SGD
$569 USD
View
B+
Retailer 10
-
$780 SGD
$610 USD
View
B
Retailer 11
-
$960 SGD
$751 USD
View
B
Retailer 12
-
$1,296 SGD
£798 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Nov 1
$1,423 SGD
$1,113 USD
View
12 more retailers have this diamond
Prices start from $249 SGDSave up to $1,174 SGD

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
$249 SGD