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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 $316 SGD
$247 USD
As of October 25, 2026
Save $1,423 SGD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,739 SGD 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 $316 to $1,739, a $1,423 spread on the same certified stone. Brilliant Earth lists it at $1,739. 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
Colour
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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Price History

Last verified: Oct 25
Current: $1,739 SGD|Low: $295 SGD|High: $3,094 SGD|Avg: $942 SGD|-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$295 SGD
Retailer 3$312 SGD
Retailer 7$316 SGD
Retailer 10$354 SGD
Retailer 11$551 SGD
Retailer 2$574 SGD
Retailer 8$575 SGD
Retailer 4$750 SGD
Retailer 5$785 SGD
Retailer 9$1,020 SGD
Retailer 6$1,486 SGD
Brilliant Earth$1,739 SGD
Retailer 12$1,764 SGD

35 data points across 13 retailers

14 retailers$316 SGD to $1,739 SGD

Retailer 1
-
$295 SGD
$231 USD
Price last confirmed 34 days ago
Retailer 2
-
$312 SGD
$244 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$316 SGD
$247 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$316 SGD
$247 USD
View
Retailer 5
-
$354 SGD
£218 GBP
View
Price last confirmed 14 days ago
B
Retailer 6
-
$551 SGD
$431 USD
View
B+
Retailer 7
-
$574 SGD
£354 GBP
View
Retailer 8
-
$575 SGD
€428 EUR
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$750 SGD
$587 USD
View
B+
Retailer 10
-
$785 SGD
$614 USD
View
B
Retailer 11
-
$1,020 SGD
$798 USD
View
B
Retailer 12
-
$1,098 SGD
£677 GBP
View
B
Retailer 13
-
$1,486 SGD
£915 GBP
View
Most Expensive
B
Brilliant Earth
11433133A · Oct 30
$1,739 SGD
$1,360 USD
View
13 more retailers have this diamond
Prices start from $316 SGDSave up to $1,423 SGD

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
$316 SGD