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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 €805 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €973 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 €973, a €805 spread on the same certified stone. Reve Diamonds lists it at €973. 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 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: €330 EUR|Low: €166 EUR|High: €973 EUR|Avg: €457 EUR|+4.5%
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 2, 2026
Retailer 12€168 EUR
Retailer 11€185 EUR
Retailer 7€287 EUR
Retailer 1€330 EUR
Retailer 10€333 EUR
Retailer 6€358 EUR
Retailer 4€361 EUR
Retailer 8€400 EUR
Retailer 9€483 EUR
Retailer 3€517 EUR
Retailer 2€645 EUR
Retailer 5€867 EUR
Reve Diamonds€973 EUR

45 data points across 13 retailers

13 retailers€168 EUR to €973 EUR

A
Cheapest Retailer
-
€168 EUR
$188 USD
Final sale: no returns
Retailer 2
-
€185 EUR
$208 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
€287 EUR
$322 USD
View
A
Retailer 4
-
€330 EUR
£291 GBP
View
A
Retailer 5
-
€333 EUR
$373 USD
View
B+
Retailer 6
-
€358 EUR
View
Retailer 7
-
€361 EUR
£318 GBP
View
Price last confirmed 19 days ago
B+
Retailer 8
-
€400 EUR
$449 USD
View
B
Retailer 9
-
€483 EUR
$542 USD
View
B+
Retailer 10
-
€517 EUR
$580 USD
View
B
Retailer 11
-
€645 EUR
$723 USD
View
B
Retailer 12
-
€867 EUR
£766 GBP
View
Most Expensive
B
Reve Diamonds
2FD519CE2 · Nov 1
€973 EUR
$1,091 USD
View
12 more retailers have this diamond
Prices start from €168 EURSave up to €805 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