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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 $195 USD
As of October 28, 2026
Save $918 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,113 USD 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 $195 to $1,113, a $918 spread on the same certified stone. Reve Diamonds lists it at $1,113. 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: $385 USD|Low: $137 USD|High: $1,113 USD|Avg: $546 USD|+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
October 31, 2026
Retailer 12$195 USD
Retailer 8$351 USD
Retailer 1$385 USD
Retailer 11$386 USD
Retailer 4$402 USD
Retailer 5$420 USD
Retailer 9$459 USD
Retailer 7$540 USD
Retailer 10$569 USD
Retailer 3$610 USD
Retailer 2$751 USD
Retailer 6$1,019 USD
Reve Diamonds$1,113 USD

42 data points across 13 retailers

13 retailers$195 USD to $1,113 USD

A
Cheapest Retailer
-
$195 USD
Final sale: no returns
A
Retailer 2
-
$351 USD
View
A
Retailer 3
-
$385 USD
£303 GBP
View
A
Retailer 4
-
$386 USD
View
B+
Retailer 5
-
$420 USD
€400 EUR
View
B+
Retailer 6
-
$459 USD
View
Retailer 7
-
$540 USD
View
Price last confirmed 12 days ago
Retailer 8
-
$568 USD
View
Price last confirmed 82 days ago
B
Retailer 9
-
$569 USD
View
B+
Retailer 10
-
$610 USD
View
B
Retailer 11
-
$751 USD
View
B
Retailer 12
-
$1,019 USD
£802 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Oct 30
$1,113 USD
View
12 more retailers have this diamond
Prices start from $195 USDSave up to $918 USD

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
$195 USD