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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 HK$3,225 HKD
$411 USD
As of October 28, 2026
Save HK$8,309 HKD (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$11,534 HKD 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 28, 2026, with prices from HK$3,225 to HK$11,534, a HK$8,309 spread on the same certified stone. Brilliant Earth lists it at HK$11,534. 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 28
Current: HK$11,534 HKD|Low: HK$1,200 HKD|High: HK$12,162 HKD|Avg: HK$5,394 HKD|-5.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8HK$1,663 HKD
Retailer 6HK$3,225 HKD
Retailer 2HK$3,334 HKD
Retailer 3HK$3,452 HKD
Retailer 9HK$4,402 HKD
Retailer 7HK$4,520 HKD
Retailer 4HK$5,940 HKD
Retailer 10HK$8,272 HKD
Retailer 5HK$8,650 HKD
Brilliant EarthHK$11,534 HKD

36 data points across 10 retailers

10 retailersHK$3,225 HKD to HK$11,534 HKD

Retailer 1
-
HK$1,726 HKD
$220 USD
Price last confirmed 32 days ago
Retailer 2
-
HK$1,820 HKD
$232 USD
View
Price last confirmed 32 days ago
B+
Retailer 3
-
HK$3,225 HKD
$411 USD
View
A
Retailer 4
-
HK$3,334 HKD
£335 GBP
View
A
Retailer 5
-
HK$3,452 HKD
€419 EUR
View
B+
Retailer 6
-
HK$4,402 HKD
$561 USD
View
B+
Retailer 7
-
HK$4,520 HKD
$576 USD
View
B+
Retailer 8
-
HK$5,940 HKD
$757 USD
View
B
Retailer 9
-
HK$8,650 HKD
£868 GBP
View
Most Expensive
B
Brilliant Earth
8073062A · Oct 29
HK$11,534 HKD
$1,470 USD
View
9 more retailers have this diamond
Prices start from HK$3,225 HKDSave up to HK$8,309 HKD

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
HK$3,225 HKD