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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 €174 EUR
$195 USD
As of October 28, 2026
Save €819 EUR (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €992 EUR at Reve Diamonds · As of November 1, 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 €174 to €992, a €819 spread on the same certified stone. Reve Diamonds lists it at €992. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €343 EUR|Low: €172 EUR|High: €992 EUR|Avg: €489 EUR|+4.8%
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€174 EUR
Retailer 8€313 EUR
Retailer 1€343 EUR
Retailer 11€344 EUR
Retailer 4€358 EUR
Retailer 6€372 EUR
Retailer 9€409 EUR
Retailer 7€481 EUR
Retailer 10€507 EUR
Retailer 3€544 EUR
Retailer 2€670 EUR
Retailer 5€904 EUR
Reve Diamonds€992 EUR

41 data points across 13 retailers

13 retailers€174 EUR to €992 EUR

A
Cheapest Retailer
-
€174 EUR
$195 USD
Final sale: no returns
A
Retailer 2
-
€313 EUR
$351 USD
View
A
Retailer 3
-
€343 EUR
£303 GBP
View
A
Retailer 4
-
€344 EUR
$386 USD
View
B+
Retailer 5
-
€372 EUR
View
B+
Retailer 6
-
€409 EUR
$459 USD
View
B+
Retailer 7
-
€481 EUR
$540 USD
View
Retailer 8
-
€506 EUR
$568 USD
View
Price last confirmed 85 days ago
B
Retailer 9
-
€507 EUR
$569 USD
View
B+
Retailer 10
-
€544 EUR
$610 USD
View
B
Retailer 11
-
€670 EUR
$751 USD
View
B
Retailer 12
-
€904 EUR
£798 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Nov 1
€992 EUR
$1,113 USD
View
12 more retailers have this diamond
Prices start from €174 EURSave up to €819 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
€174 EUR