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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG677580013

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

Certificate IGI LG677580013

Diamond specifications and retailer prices

From HK$1,583 HKD
As of November 6, 2026
Save HK$4,749 HKD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$9,187 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG677580013 or 677580013. Listed at 15 retailers as of November 4, 2026, with a 300% 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677580013
Dimensions6.88 × 4.92 × 3.27 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm4.92 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677580013
Side View
Table 66.0%Crown 37.4°Girdle: STK-THKPavilionCulet: NoneDepth 66.5%

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: Nov 6
Current: HK$9,187 HKD|Low: HK$1,520 HKD|High: HK$9,287 HKD|Avg: HK$3,621 HKD|+4.1%
MOH London
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
November 6, 2026
Retailer 9HK$1,583 HKD
Retailer 4HK$1,771 HKD
Retailer 14HK$1,834 HKD
Retailer 3HK$1,959 HKD
Retailer 11HK$1,959 HKD
Retailer 5HK$2,398 HKD
Retailer 2HK$2,531 HKD
Retailer 13HK$3,409 HKD
Retailer 7HK$3,566 HKD
Retailer 6HK$3,809 HKD
Retailer 10HK$4,546 HKD
Retailer 12HK$6,309 HKD
Retailer 8HK$6,333 HKD
MOH LondonHK$9,187 HKD

45 data points across 14 retailers

15 retailersHK$1,583 HKD to HK$6,333 HKD

A
Cheapest Retailer
-
HK$1,583 HKD
A
Retailer 2
-
HK$1,771 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,834 HKD
View
A
Retailer 4
-
HK$1,959 HKD
View
Retailer 5
-
HK$1,959 HKD
View
Price last confirmed 13 days ago
A
Retailer 6
-
HK$2,398 HKD
View
A
Retailer 7
-
HK$2,531 HKD
View
B+
Retailer 8
-
HK$3,409 HKD
View
B+
Retailer 9
-
HK$3,566 HKD
View
B+
Retailer 10
-
HK$3,809 HKD
View
B+
Retailer 11
-
HK$3,911 HKD
View
B+
Retailer 12
-
HK$4,546 HKD
View
B
Retailer 13
-
HK$6,309 HKD
View
B
Retailer 14
-
HK$6,333 HKD
View
Most Expensive
MOH London
LG677580013 · Oct 25
HK$9,187 HKD
£923 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from HK$1,583 HKDSave up to HK$4,749 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
1.00ct Radiant
HK$1,583 HKD