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Cushion|Lab Grown|IGI

1.89ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG718507117

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG718507117

Diamond specifications and retailer prices

From €446 EUR
$498 USD
As of October 30, 2026
Save €2,973 EUR (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,419 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG718507117 or 718507117. Listed at 13 retailers as of October 30, 2026, with prices from €446 to €3,419, a €2,973 spread on the same certified stone. Brilliant Earth lists it at €3,419. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG718507117
Dimensions8.33 × 6.50 × 4.57 mm
L/W Ratio1.28
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
8.33 mm6.50 mm1.89 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG718507117
Side View
Table 58.0%Crown 34°Girdle: STK-THKPavilion 42.1°Culet: NoneDepth 70.3%

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 30
Current: €3,419 EUR|Low: €446 EUR|High: €5,039 EUR|Avg: €1,758 EUR|-32.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 5€446 EUR
Retailer 9€600 EUR
Retailer 3€649 EUR
Retailer 11€712 EUR
Retailer 2€775 EUR
Retailer 4€1,103 EUR
Retailer 7€1,156 EUR
Retailer 12€1,326 EUR
Retailer 8€1,834 EUR
Retailer 6€2,893 EUR
Retailer 13€2,931 EUR
Retailer 10€3,222 EUR
Brilliant Earth€3,419 EUR

33 data points across 13 retailers

13 retailers€446 EUR to €3,419 EUR

A
Cheapest Retailer
-
€446 EUR
$498 USD
Final sale: no returns
A
Retailer 2
-
€600 EUR
$670 USD
View
A
Retailer 3
-
€649 EUR
$725 USD
View
A
Retailer 4
-
€712 EUR
$795 USD
View
A
Retailer 5
-
€775 EUR
View
A
Retailer 6
-
€1,103 EUR
$1,232 USD
View
A
Retailer 7
-
€1,156 EUR
A$1,987 AUD
View
A
Retailer 8
-
€1,326 EUR
$1,481 USD
View
B+
Retailer 9
-
€1,834 EUR
£1,613 GBP
View
B+
Retailer 10
-
€2,893 EUR
A$4,972 AUD
View
Retailer 11
-
€2,931 EUR
$3,275 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
€3,222 EUR
$3,600 USD
View
Most Expensive
B
Brilliant Earth
14895653Y · Oct 31
€3,419 EUR
$3,820 USD
View
12 more retailers have this diamond
Prices start from €446 EURSave up to €2,973 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
1.89ct Cushion
€446 EUR