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Cushion|Lab Grown|IGI

1.73ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG541275348

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG541275348

Diamond specifications and retailer prices

From €202 EUR
$226 USD
As of October 30, 2026
Save €1,131 EUR (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,334 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 LG541275348 or 541275348. Listed at 12 retailers as of October 30, 2026, with prices from €202 to €1,334, a €1,131 spread on the same certified stone. Brilliant Earth lists it at €1,334. 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 angle34.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541275348
Dimensions7.25 × 6.65 × 4.27 mm
L/W Ratio1.09
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
7.25 mm6.65 mm1.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541275348
Side View
Table 60.0%Crown 34.8°Girdle: MED-THKPavilion 35.6°Culet: NoneDepth 64.2%

Caratlytics Score

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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: €1,334 EUR|Low: €202 EUR|High: €1,369 EUR|Avg: €595 EUR|-2.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 10€202 EUR
Retailer 5€221 EUR
Retailer 3€376 EUR
Retailer 8€386 EUR
Retailer 2€405 EUR
Retailer 6€459 EUR
Retailer 7€554 EUR
Retailer 9€723 EUR
Retailer 4€1,040 EUR
Brilliant Earth€1,334 EUR

42 data points across 10 retailers

12 retailers€202 EUR to €1,334 EUR

A
Cheapest Retailer
-
€202 EUR
$226 USD
Final sale: no returns
A
Retailer 2
-
€221 EUR
$247 USD
View
A
Retailer 3
-
€252 EUR
HK$2,200 HKD
View
A
Retailer 4
-
€376 EUR
View
B+
Retailer 5
-
€386 EUR
$431 USD
View
A
Retailer 6
-
€405 EUR
£357 GBP
View
A
Retailer 7
-
€459 EUR
$513 USD
View
A
Retailer 8
-
€554 EUR
$619 USD
View
B+
Retailer 9
-
€723 EUR
SGD 1,092 SGD
View
B
Retailer 10
-
€1,040 EUR
£915 GBP
View
Retailer 11
-
€1,076 EUR
$1,203 USD
View
Price last confirmed 83 days ago
Most Expensive
B
Brilliant Earth
19055824A · Oct 31
€1,334 EUR
$1,490 USD
View
11 more retailers have this diamond
Prices start from €202 EURSave up to €1,131 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
€202 EUR