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Cushion|Lab Grown|IGI

1.73ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG522239300

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG522239300

Diamond specifications and retailer prices

From €210 EUR
$235 USD
As of October 30, 2026
Save €1,213 EUR (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,423 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.73ct lab-grown cushion diamond

This 1.73ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522239300 or 522239300. Listed at 13 retailers as of October 30, 2026, with prices from €210 to €1,423, a €1,213 spread on the same certified stone. Brilliant Earth lists it at €1,423. 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

1.73
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522239300
Dimensions7.06 × 6.69 × 4.24 mm
L/W Ratio1.06
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
7.06 mm6.69 mm1.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522239300
Side View
Table 62.5%Crown 33.2°Girdle: STK-VTKPavilion 32°Culet: NoneDepth 63.4%

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 30
Current: €1,423 EUR|Low: €210 EUR|High: €1,495 EUR|Avg: €630 EUR|-4.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 9€210 EUR
Retailer 6€315 EUR
Retailer 4€381 EUR
Retailer 3€432 EUR
Retailer 10€477 EUR
Retailer 8€537 EUR
Retailer 5€570 EUR
Retailer 2€938 EUR
Retailer 7€1,020 EUR
Brilliant Earth€1,423 EUR

45 data points across 10 retailers

13 retailers€210 EUR to €1,423 EUR

A
Cheapest Retailer
-
€210 EUR
$235 USD
Final sale: no returns
B+
Retailer 2
-
€315 EUR
$352 USD
View
A
Retailer 3
-
€381 EUR
View
A
Retailer 4
-
€432 EUR
£380 GBP
View
A
Retailer 5
-
€477 EUR
$533 USD
View
A
Retailer 6
-
€537 EUR
$600 USD
View
B+
Retailer 7
-
€558 EUR
$623 USD
View
A
Retailer 8
-
€570 EUR
$637 USD
View
B
Retailer 9
-
€800 EUR
$894 USD
View
B+
Retailer 10
-
€938 EUR
£825 GBP
View
Retailer 11
-
€1,020 EUR
$1,140 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
€1,099 EUR
$1,228 USD
View
Most Expensive
B
Brilliant Earth
10788459A · Oct 31
€1,423 EUR
$1,590 USD
View
12 more retailers have this diamond
Prices start from €210 EURSave up to €1,213 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
1.73ct Cushion
€210 EUR