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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG781638068

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

Certificate IGI LG781638068

Diamond specifications and retailer prices

From HK$1,897 HKD
As of November 6, 2026
Save HK$4,673 HKD (71%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$6,569 HKD at MOH London · As of November 4, 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 LG781638068 or 781638068. Listed at 10 retailers as of November 4, 2026, with prices from HK$1,897 to HK$6,569, a HK$4,673 spread on the same certified stone. MOH London lists it at HK$6,569. 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 angle42.3°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781638068
Dimensions7.12 × 4.94 × 3.27 mm
L/W Ratio1.44
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
7.12 mm4.94 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781638068
Side View
Table 66.0%Crown 42.3°Girdle: MediumPavilion 35.1°Culet: NoneDepth 66.2%

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$6,569 HKD|Low: HK$1,897 HKD|High: HK$6,659 HKD|Avg: HK$3,525 HKD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9HK$1,897 HKD
Retailer 8HK$2,241 HKD
Retailer 3HK$2,398 HKD
Retailer 2HK$2,453 HKD
Retailer 5HK$2,673 HKD
Retailer 4HK$3,135 HKD
Retailer 7HK$3,323 HKD
Retailer 10HK$4,961 HKD
Retailer 6HK$5,486 HKD
MOH LondonHK$6,569 HKD

42 data points across 10 retailers

10 retailersHK$1,897 HKD to HK$6,569 HKD

B+
Cheapest Retailer
-
HK$1,897 HKD
A
Retailer 2
-
HK$2,241 HKD
View
A
Retailer 3
-
HK$2,398 HKD
View
A
Retailer 4
-
HK$2,453 HKD
View
A
Retailer 5
-
HK$2,673 HKD
View
B+
Retailer 6
-
HK$3,135 HKD
View
B+
Retailer 7
-
HK$3,323 HKD
View
B
Retailer 8
-
HK$4,961 HKD
View
Retailer 9
-
HK$5,486 HKD
View
Price last confirmed 16 days ago
Most Expensive
B
MOH London
LG781638068 · Nov 4
HK$6,569 HKD
£660 GBP
View
9 more retailers have this diamond
Prices start from HK$1,897 HKDSave up to HK$4,673 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$1,897 HKD