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 $247 USD
As of October 25, 2026
Save $1,113 USD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,360 USD 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 $247 to $1,360, a $1,113 spread on the same certified stone. Brilliant Earth lists it at $1,360. 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: $1,360 USD|Low: $231 USD|High: $2,420 USD|Avg: $743 USD|-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 30, 2026
Retailer 13$231 USD
Retailer 3$244 USD
Retailer 7$247 USD
Retailer 10$277 USD
Retailer 11$431 USD
Retailer 8$449 USD
Retailer 2$453 USD
Retailer 4$587 USD
Retailer 5$614 USD
Retailer 9$798 USD
Retailer 6$1,162 USD
Brilliant Earth$1,360 USD
Retailer 12$1,380 USD

35 data points across 13 retailers

14 retailers$247 USD to $1,360 USD

Retailer 1
-
$231 USD
Price last confirmed 33 days ago
Retailer 2
-
$244 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$247 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$247 USD
View
Retailer 5
-
$277 USD
£218 GBP
View
Price last confirmed 13 days ago
B
Retailer 6
-
$431 USD
View
Retailer 7
-
$449 USD
€428 EUR
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$453 USD
£357 GBP
View
B+
Retailer 9
-
$587 USD
View
B+
Retailer 10
-
$614 USD
View
B
Retailer 11
-
$798 USD
View
B
Retailer 12
-
$859 USD
£677 GBP
View
B
Retailer 13
-
$1,162 USD
£915 GBP
View
Most Expensive
B
Brilliant Earth
11433133A · Oct 30
$1,360 USD
View
13 more retailers have this diamond
Prices start from $247 USDSave up to $1,113 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 Radiant
$247 USD