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Cushion|Lab Grown|IGI

1.05ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689561794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689561794

Diamond specifications and retailer prices

From €175 EUR
$195 USD
As of October 28, 2026
Save €822 EUR (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €996 EUR at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.05ct lab-grown cushion diamond

This 1.05ct 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 LG689561794 or 689561794. Listed at 13 retailers as of October 28, 2026, with prices from €175 to €996, a €822 spread on the same certified stone. Reve Diamonds lists it at €996. 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

1.05
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561794
Dimensions7.05 × 5.48 × 3.60 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
7.05 mm5.48 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561794
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.7%

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 28
Current: €373 EUR|Low: €123 EUR|High: €996 EUR|Avg: €490 EUR|+10.0%
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€175 EUR
Retailer 8€314 EUR
Retailer 5€345 EUR
Retailer 11€346 EUR
Retailer 4€360 EUR
Retailer 1€373 EUR
Retailer 9€411 EUR
Retailer 7€483 EUR
Retailer 10€509 EUR
Retailer 3€546 EUR
Retailer 2€672 EUR
Retailer 6€912 EUR
Reve Diamonds€996 EUR

41 data points across 13 retailers

13 retailers€175 EUR to €996 EUR

A
Cheapest Retailer
-
€175 EUR
$195 USD
Final sale: no returns
A
Retailer 2
-
€314 EUR
$351 USD
View
A
Retailer 3
-
€345 EUR
£303 GBP
View
A
Retailer 4
-
€346 EUR
$386 USD
View
B+
Retailer 5
-
€373 EUR
View
B+
Retailer 6
-
€411 EUR
$459 USD
View
Retailer 7
-
€483 EUR
$540 USD
View
Price last confirmed 13 days ago
Retailer 8
-
€508 EUR
$568 USD
View
Price last confirmed 83 days ago
B
Retailer 9
-
€509 EUR
$569 USD
View
B+
Retailer 10
-
€546 EUR
$610 USD
View
B
Retailer 11
-
€672 EUR
$751 USD
View
B
Retailer 12
-
€912 EUR
£802 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Oct 30
€996 EUR
$1,113 USD
View
12 more retailers have this diamond
Prices start from €175 EURSave up to €822 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
1.05ct Cushion
€175 EUR