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Cushion|Lab Grown|IGI

1.72ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG478104352

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG478104352

Diamond specifications and retailer prices

From $516 USD
As of October 25, 2026
Save $2,097 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,690 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.72ct lab-grown cushion diamond

This 1.72ct 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 LG478104352 or 478104352. Listed at 11 retailers as of October 25, 2026, with a 406% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.72
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478104352
Dimensions7.28 × 6.64 × 4.58 mm
L/W Ratio1.10
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
7.28 mm6.64 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478104352
Side View
Table 62.0%Crown 37°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 69.0%

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 25
Current: $3,690 USD|Low: $516 USD|High: $3,690 USD|Avg: $1,407 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 6$516 USD
Retailer 3$636 USD
Retailer 9$765 USD
Retailer 8$815 USD
Retailer 2$943 USD
Retailer 7$1,920 USD
Retailer 5$2,103 USD
Retailer 4$2,613 USD
Do Amore Diamonds$3,690 USD

44 data points across 9 retailers

11 retailers$516 USD to $2,613 USD

A
Cheapest Retailer
-
$516 USD
A
Retailer 2
-
$527 USD
View
A
Retailer 3
-
$636 USD
£500 GBP
View
B+
Retailer 4
-
$660 USD
View
B+
Retailer 5
-
$765 USD
View
B+
Retailer 6
-
$815 USD
View
B+
Retailer 7
-
$943 USD
£743 GBP
View
B
Retailer 8
-
$1,920 USD
View
B
Retailer 9
-
$2,103 USD
£1,656 GBP
View
B
Retailer 10
-
$2,613 USD
CA$3,629 CAD
View
Most Expensive
Do Amore Diamonds
27-0CD619052 · Oct 31
$3,690 USD
View
Price under review
10 more retailers have this diamond
Prices start from $516 USDSave up to $2,097 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
1.72ct Cushion
$516 USD