CaratHunter
Plans
Radiant|Lab Grown|IGI

1.72ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG594321721

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

Certificate IGI LG594321721

Diamond specifications and retailer prices

From $525 SGD
$411 USD
As of October 30, 2026
Save $1,354 SGD (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,879 SGD at Brilliant Earth · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG594321721 or 594321721. Listed at 10 retailers as of October 29, 2026, with prices from $525 to $1,879, a $1,354 spread on the same certified stone. Brilliant Earth lists it at $1,879. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594321721
Dimensions8.56 × 5.85 × 4.00 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.56 mm5.85 mm1.72 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594321721
Side View
Table 65.0%Crown 44.5°Girdle: MediumPavilion 34.9°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,879 SGD|Low: $196 SGD|High: $1,982 SGD|Avg: $879 SGD|-5.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$271 SGD
Retailer 6$525 SGD
Retailer 2$545 SGD
Retailer 3$562 SGD
Retailer 9$717 SGD
Retailer 7$736 SGD
Retailer 4$968 SGD
Retailer 10$1,348 SGD
Retailer 5$1,409 SGD
Brilliant Earth$1,879 SGD

37 data points across 10 retailers

10 retailers$525 SGD to $1,879 SGD

Retailer 1
-
$281 SGD
$220 USD
Price last confirmed 33 days ago
Retailer 2
-
$297 SGD
$232 USD
View
Price last confirmed 33 days ago
B+
Retailer 3
-
$525 SGD
$411 USD
View
A
Retailer 4
-
$545 SGD
£336 GBP
View
Retailer 5
-
$562 SGD
€419 EUR
View
Price last confirmed 7 days ago
B+
Retailer 6
-
$717 SGD
$561 USD
View
B+
Retailer 7
-
$736 SGD
$576 USD
View
B+
Retailer 8
-
$968 SGD
$757 USD
View
B
Retailer 9
-
$1,409 SGD
£868 GBP
View
Most Expensive
B
Brilliant Earth
8073062A · Oct 29
$1,879 SGD
$1,470 USD
View
9 more retailers have this diamond
Prices start from $525 SGDSave up to $1,354 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
$525 SGD