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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 $240 SGD
$188 USD
As of November 1, 2026
Save $1,154 SGD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,394 SGD at Reve Diamonds · As of November 1, 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 13 retailers as of November 1, 2026, with prices from $240 to $1,394, a $1,154 spread on the same certified stone. Reve Diamonds lists it at $1,394. 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

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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: Nov 1
Current: $1,244 SGD|Low: $169 SGD|High: $1,394 SGD|Avg: $646 SGD|+0.7%
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$240 SGD
Retailer 11$266 SGD
Retailer 7$412 SGD
Retailer 5$473 SGD
Retailer 10$477 SGD
Retailer 6$513 SGD
Retailer 4$517 SGD
Retailer 8$574 SGD
Retailer 9$693 SGD
Retailer 3$741 SGD
Retailer 2$925 SGD
Retailer 1$1,244 SGD
Reve Diamonds$1,394 SGD

45 data points across 13 retailers

13 retailers$240 SGD to $1,394 SGD

A
Cheapest Retailer
-
$240 SGD
$188 USD
Final sale: no returns
Retailer 2
-
$266 SGD
$208 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$412 SGD
$322 USD
View
A
Retailer 4
-
$473 SGD
£291 GBP
View
A
Retailer 5
-
$477 SGD
$373 USD
View
B+
Retailer 6
-
$513 SGD
€382 EUR
View
Retailer 7
-
$517 SGD
£318 GBP
View
Price last confirmed 18 days ago
B+
Retailer 8
-
$574 SGD
$449 USD
View
B
Retailer 9
-
$693 SGD
$542 USD
View
B+
Retailer 10
-
$741 SGD
$580 USD
View
B
Retailer 11
-
$925 SGD
$723 USD
View
B
Retailer 12
-
$1,244 SGD
£766 GBP
View
Most Expensive
B
Reve Diamonds
C99BFAB20 · Nov 1
$1,394 SGD
$1,091 USD
View
12 more retailers have this diamond
Prices start from $240 SGDSave up to $1,154 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
1.00ct Cushion
$240 SGD