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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG689562161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562161

Diamond specifications and retailer prices

From $240 SGD
$188 USD
As of October 30, 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 October 30, 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 standard cut grade and certified by IGI LG689562161 or 689562161. Listed at 13 retailers as of October 30, 2026, with prices from $240 to $1,394, a $1,154 spread on the same certified stone. Reve Diamonds lists it at $1,394. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562161
Dimensions6.60 × 5.40 × 3.63 mm
L/W Ratio1.22
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
6.60 mm5.40 mm1.00 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562161
Side View
Table 63.0%Crown 35.5°Girdle: STK-THKPavilion 39°Culet: NoneDepth 67.2%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $513 SGD|Low: $169 SGD|High: $1,394 SGD|Avg: $674 SGD|+10.4%
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
October 31, 2026
Retailer 12$240 SGD
Retailer 8$412 SGD
Retailer 5$469 SGD
Retailer 11$477 SGD
Retailer 1$513 SGD
Retailer 3$517 SGD
Retailer 9$574 SGD
Retailer 7$658 SGD
Retailer 10$693 SGD
Retailer 4$754 SGD
Retailer 2$925 SGD
Retailer 6$1,250 SGD
Reve Diamonds$1,394 SGD

41 data points across 13 retailers

13 retailers$240 SGD to $1,394 SGD

A
Cheapest Retailer
-
$240 SGD
$188 USD
Final sale: no returns
B+
Retailer 2
-
$412 SGD
$322 USD
View
B+
Retailer 3
-
$469 SGD
£289 GBP
View
B+
Retailer 4
-
$477 SGD
$373 USD
View
B+
Retailer 5
-
$513 SGD
€382 EUR
View
B+
Retailer 6
-
$574 SGD
$449 USD
View
Retailer 7
-
$658 SGD
$515 USD
View
Price last confirmed 13 days ago
B
Retailer 8
-
$693 SGD
$542 USD
View
Retailer 9
-
$754 SGD
$590 USD
View
Price last confirmed 21 days ago
B
Retailer 10
-
$754 SGD
$590 USD
View
B
Retailer 11
-
$925 SGD
$723 USD
View
B
Retailer 12
-
$1,250 SGD
£770 GBP
View
Most Expensive
C
Reve Diamonds
78CCF1F67 · Oct 30
$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