Radiant|Lab Grown|IGI

1.72ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG646481247

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG646481247

Diamond specifications and retailer prices

From $345 CAD
$247 USD
As of October 25, 2026
Save $1,555 CAD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,900 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.72ct lab-grown radiant diamond

This 1.72ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG646481247 or 646481247. Listed at 14 retailers as of October 25, 2026, with prices from $345 to $1,900, a $1,555 spread on the same certified stone. Brilliant Earth lists it at $1,900. 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

1.72
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646481247
Dimensions8.37 × 5.94 × 4.08 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.37 mm5.94 mm1.72 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646481247
Side View
Table 65.0%Crown 43.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.7%

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 25
Current: $1,900 CAD|Low: $323 CAD|High: $3,380 CAD|Avg: $1,034 CAD|-43.8%
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 13$323 CAD
Retailer 3$341 CAD
Retailer 7$345 CAD
Retailer 10$386 CAD
Retailer 11$602 CAD
Retailer 2$628 CAD
Retailer 8$628 CAD
Retailer 4$820 CAD
Retailer 5$858 CAD
Retailer 9$1,115 CAD
Retailer 6$1,623 CAD
Brilliant Earth$1,900 CAD
Retailer 12$1,928 CAD

36 data points across 13 retailers

14 retailers$345 CAD to $1,900 CAD

Retailer 1
-
$323 CAD
$231 USD
Price last confirmed 33 days ago
Retailer 2
-
$341 CAD
$244 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$345 CAD
$247 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$345 CAD
$247 USD
View
Retailer 5
-
$386 CAD
£218 GBP
View
Price last confirmed 14 days ago
B
Retailer 6
-
$602 CAD
$431 USD
View
B+
Retailer 7
-
$628 CAD
£354 GBP
View
Retailer 8
-
$628 CAD
€428 EUR
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$820 CAD
$587 USD
View
B+
Retailer 10
-
$858 CAD
$614 USD
View
B
Retailer 11
-
$1,115 CAD
$798 USD
View
B
Retailer 12
-
$1,200 CAD
£677 GBP
View
B
Retailer 13
-
$1,623 CAD
£915 GBP
View
Most Expensive
B
Brilliant Earth
11433133A · Oct 30
$1,900 CAD
$1,360 USD
View
13 more retailers have this diamond
Prices start from $345 CADSave up to $1,555 CAD

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 Radiant
$345 CAD