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Cushion|Lab Grown|IGI

1.73ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG576348168

Certificate IGI LG576348168

Diamond specifications and retailer prices

From €1,115 EUR
$1,246 USD
As of October 31, 2026
Save €406 EUR (27%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €1,522 EUR at Zales · As of October 30, 2026
View at Zales

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 very-good cut grade and certified by IGI LG576348168 or 576348168. Listed at 4 retailers as of October 30, 2026, with prices from €1,115 to €1,522, a €406 spread on the same certified stone. Zales lists it at €1,522. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.73
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG576348168
Dimensions8.72 × 6.29 × 4.30 mm
L/W Ratio1.39
Top View
8.72 mm6.29 mm1.73 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG576348168
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: €1,115 EUR|Low: €1,115 EUR|High: €1,880 EUR|Avg: €1,513 EUR
Retailer 1
Retailer 2
Retailer 3
Zales
September 26, 2026
Retailer 1€1,115 EUR
Retailer 3€1,271 EUR
Retailer 2€1,522 EUR
Zales€1,522 EUR

11 data points across 4 retailers

4 retailers€1,115 EUR to €1,522 EUR

B
Cheapest Retailer
-
€1,115 EUR
$1,246 USD
B
Retailer 2
-
€1,271 EUR
$1,420 USD
View
B
Retailer 3
-
€1,522 EUR
$1,700 USD
View
Most Expensive
B
Zales
517316035 · Oct 30
€1,522 EUR
$1,700 USD
View
3 more retailers have this diamond
Prices start from €1,115 EURSave up to €406 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.

B
1.73ct Cushion
€1,115 EUR