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Radiant|Lab Grown|IGI

1.00ct E SI2 Radiant Lab Grown Diamond

ID • E/SI2 • IGI LG474115423

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

Certificate IGI LG474115423

Diamond specifications and retailer prices

From HK$4,598 HKD
$586 USD
As of October 30, 2026
Save HK$9,565 HKD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$15,010 HKD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474115423 or 474115423. Listed at 10 retailers as of October 26, 2026, with a 208% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.4°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474115423
Dimensions6.25 × 4.79 × 3.45 mm
L/W Ratio1.30
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
6.25 mm4.79 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474115423
Side View
Table 67.0%Crown 50.4°Girdle: ThickPavilion 30.1°Culet: NoneDepth 72.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$15,010 HKD|Low: HK$3,672 HKD|High: HK$25,072 HKD|Avg: HK$9,975 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5HK$4,598 HKD
Retailer 8HK$5,155 HKD
Retailer 9HK$5,155 HKD
Retailer 6HK$5,704 HKD
Retailer 7HK$8,764 HKD
Retailer 2HK$8,919 HKD
Retailer 4HK$14,163 HKD
NZ JewellersHK$15,010 HKD
Retailer 3HK$24,803 HKD

42 data points across 9 retailers

10 retailersHK$4,598 HKD to HK$14,163 HKD

B+
Cheapest Retailer
-
HK$4,598 HKD
$586 USD
B
Retailer 2
-
HK$5,155 HKD
$657 USD
View
Final sale: no returns
B
Retailer 3
-
HK$5,155 HKD
$657 USD
View
Retailer 4
-
HK$5,704 HKD
$727 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
HK$5,704 HKD
$727 USD
View
B
Retailer 6
-
HK$8,764 HKD
$1,117 USD
View
B
Retailer 7
-
HK$8,919 HKD
£895 GBP
View
B
Retailer 8
-
HK$14,163 HKD
$1,805 USD
View
Most Expensive
NZ Jewellers
2c24565e-93cb-4cc9-972a-0da2494af1a8 · Oct 28
HK$15,010 HKD
$1,913 USD
View
Price under review
8 more retailers have this diamond
Prices start from HK$4,598 HKDSave up to HK$9,565 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.

B+
1.00ct Radiant
HK$4,598 HKD