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Cushion|Lab Grown|IGI

1.00ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG689562240

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562240

Diamond specifications and retailer prices

From €257 EUR
$287 USD
As of October 30, 2026
Save €1,372 EUR (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,629 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG689562240 or 689562240. Listed at 19 retailers as of October 30, 2026, with prices from €257 to €1,629, a €1,372 spread on the same certified stone. Brilliant Earth lists it at €1,629. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562240
Dimensions6.58 × 5.37 × 3.71 mm
L/W Ratio1.23
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
6.58 mm5.37 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562240
Side View
Table 58.0%Crown 35.7°Girdle: STK-THKPavilion 37.2°Culet: NoneDepth 69.1%

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: Oct 30
Current: €1,629 EUR|Low: €254 EUR|High: €2,112 EUR|Avg: €775 EUR|-22.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 11€257 EUR
Retailer 5€285 EUR
Retailer 9€439 EUR
Retailer 6€475 EUR
Retailer 14€490 EUR
Retailer 3€502 EUR
Retailer 12€536 EUR
Retailer 2€544 EUR
Retailer 13€694 EUR
Retailer 4€756 EUR
Retailer 8€962 EUR
Retailer 15€1,144 EUR
Retailer 16€1,182 EUR
Retailer 7€1,230 EUR
Retailer 10€1,248 EUR
Brilliant Earth€1,629 EUR

37 data points across 16 retailers

19 retailers€257 EUR to €1,629 EUR

A
Cheapest Retailer
-
€257 EUR
$287 USD
Final sale: no returns
A
Retailer 2
-
€285 EUR
$318 USD
View
A
Retailer 3
-
€439 EUR
$490 USD
View
A
Retailer 4
-
€475 EUR
$531 USD
View
A
Retailer 5
-
€490 EUR
ZAR 8,835 ZAR
View
A
Retailer 6
-
€500 EUR
$559 USD
View
A
Retailer 7
-
€502 EUR
$561 USD
View
A
Retailer 8
-
€536 EUR
View
A
Retailer 9
-
€544 EUR
£478 GBP
View
A
Retailer 10
-
€694 EUR
A$1,192 AUD
View
B+
Retailer 11
-
€756 EUR
$845 USD
View
B+
Retailer 12
-
€962 EUR
$1,075 USD
View
B+
Retailer 13
-
€1,050 EUR
$1,173 USD
View
B+
Retailer 14
-
€1,144 EUR
£1,006 GBP
View
Retailer 15
-
€1,182 EUR
$1,320 USD
View
Price last confirmed 13 days ago
B
Retailer 16
-
€1,230 EUR
$1,375 USD
View
Retailer 17
-
€1,243 EUR
$1,389 USD
View
Price last confirmed 96 days ago
B+
Retailer 18
-
€1,248 EUR
A$2,145 AUD
View
Most Expensive
B
Brilliant Earth
15978455A · Oct 30
€1,629 EUR
$1,820 USD
View
18 more retailers have this diamond
Prices start from €257 EURSave up to €1,372 EUR

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
€257 EUR