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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689562249

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562249

Diamond specifications and retailer prices

From €168 EUR
$188 USD
As of November 1, 2026
Save €808 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €976 EUR 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 LG689562249 or 689562249. Listed at 13 retailers as of November 1, 2026, with prices from €168 to €976, a €808 spread on the same certified stone. Reve Diamonds lists it at €976. 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
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562249
Dimensions6.85 × 5.29 × 3.50 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
6.85 mm5.29 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562249
Side View
Table 61.0%Crown 34.8°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 66.2%

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 1
Current: €871 EUR|Low: €118 EUR|High: €976 EUR|Avg: €458 EUR|+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€168 EUR
Retailer 11€186 EUR
Retailer 7€288 EUR
Retailer 5€331 EUR
Retailer 10€334 EUR
Retailer 6€359 EUR
Retailer 4€362 EUR
Retailer 8€402 EUR
Retailer 9€485 EUR
Retailer 3€519 EUR
Retailer 2€648 EUR
Retailer 1€871 EUR
Reve Diamonds€976 EUR

45 data points across 13 retailers

13 retailers€168 EUR to €976 EUR

A
Cheapest Retailer
-
€168 EUR
$188 USD
Final sale: no returns
Retailer 2
-
€186 EUR
$208 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
€288 EUR
$322 USD
View
A
Retailer 4
-
€331 EUR
£291 GBP
View
A
Retailer 5
-
€334 EUR
$373 USD
View
B+
Retailer 6
-
€359 EUR
View
Retailer 7
-
€362 EUR
£318 GBP
View
Price last confirmed 18 days ago
B+
Retailer 8
-
€402 EUR
$449 USD
View
B
Retailer 9
-
€485 EUR
$542 USD
View
B+
Retailer 10
-
€519 EUR
$580 USD
View
B
Retailer 11
-
€648 EUR
$723 USD
View
B
Retailer 12
-
€871 EUR
£766 GBP
View
Most Expensive
B
Reve Diamonds
2FD519CE2 · Nov 1
€976 EUR
$1,091 USD
View
12 more retailers have this diamond
Prices start from €168 EURSave up to €808 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
€168 EUR