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Radiant|Lab Grown|IGI

1.72ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG629439991

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

Certificate IGI LG629439991

Diamond specifications and retailer prices

From $318 SGD
$249 USD
As of October 30, 2026
Save $1,433 SGD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,751 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 top-tier cut grade and certified by IGI LG629439991 or 629439991. Listed at 15 retailers as of October 30, 2026, with prices from $318 to $1,751, a $1,433 spread on the same certified stone. Brilliant Earth lists it at $1,751. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.3°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629439991
Dimensions8.76 × 5.89 × 3.93 mm
L/W Ratio1.49
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
8.76 mm5.89 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629439991
Side View
Table 62.0%Crown 45.3°Girdle: MED-STKPavilion 33.8°Culet: NoneDepth 66.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,751 SGD|Low: $195 SGD|High: $3,107 SGD|Avg: $923 SGD|-43.6%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 8$195 SGD
Retailer 14$318 SGD
Retailer 5$357 SGD
Retailer 3$369 SGD
Retailer 4$395 SGD
Retailer 15$395 SGD
Retailer 13$531 SGD
Retailer 2$709 SGD
Retailer 9$744 SGD
Retailer 6$807 SGD
Retailer 12$968 SGD
Retailer 16$1,268 SGD
Retailer 7$1,334 SGD
Retailer 10$1,583 SGD
Retailer 11$1,745 SGD
Brilliant Earth$1,751 SGD

44 data points across 16 retailers

15 retailers$318 SGD to $1,751 SGD

A
Cheapest Retailer
-
$318 SGD
$249 USD
A
Retailer 2
-
$357 SGD
$279 USD
View
Final sale: no returns
A
Retailer 3
-
$369 SGD
$289 USD
View
A
Retailer 4
-
$395 SGD
$309 USD
View
A
Retailer 5
-
$395 SGD
$309 USD
View
B+
Retailer 6
-
$531 SGD
$415 USD
View
B+
Retailer 7
-
$709 SGD
€528 EUR
View
A
Retailer 8
-
$744 SGD
£458 GBP
View
B+
Retailer 9
-
$807 SGD
$631 USD
View
B+
Retailer 10
-
$968 SGD
$757 USD
View
B
Retailer 11
-
$1,268 SGD
$992 USD
View
B
Retailer 12
-
$1,334 SGD
$1,044 USD
View
B
Retailer 13
-
$1,583 SGD
£975 GBP
View
Retailer 14
-
$1,745 SGD
$1,365 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21312060A · Oct 30
$1,751 SGD
$1,370 USD
View
14 more retailers have this diamond
Prices start from $318 SGDSave up to $1,433 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
$318 SGD