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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG830650343

Shape and cutting style on the report: Cushion antique cut

Certificate IGI LG830650343

Diamond specifications and retailer prices

From HK$1,442 HKD
As of November 6, 2026
Save HK$7,520 HKD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$8,962 HKD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion 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 LG830650343 or 830650343. Listed at 16 retailers as of November 6, 2026, with prices from HK$1,442 to HK$8,962, a HK$7,520 spread on the same certified stone. Reve Diamonds lists it at HK$8,962. 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 angle37.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830650343
Dimensions7.52 × 5.25 × 3.21 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm5.25 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830650343
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40°Culet: LargeDepth 61.1%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: HK$2,939 HKD|Low: HK$1,387 HKD|High: HK$8,962 HKD|Avg: HK$3,943 HKD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
November 6, 2026
Retailer 9HK$1,442 HKD
Retailer 5HK$1,615 HKD
Retailer 4HK$1,677 HKD
Retailer 2HK$1,795 HKD
Retailer 11HK$1,795 HKD
Retailer 1HK$2,939 HKD
Retailer 3HK$3,151 HKD
Retailer 6HK$3,198 HKD
Retailer 13HK$3,958 HKD
Retailer 10HK$5,760 HKD
Retailer 8HK$6,082 HKD
Retailer 12HK$6,176 HKD
Retailer 7HK$8,386 HKD
Reve DiamondsHK$8,962 HKD

44 data points across 14 retailers

16 retailersHK$1,442 HKD to HK$8,962 HKD

A
Cheapest Retailer
-
HK$1,442 HKD
A
Retailer 2
-
HK$1,615 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,677 HKD
View
A
Retailer 4
-
HK$1,795 HKD
View
Retailer 5
-
HK$1,795 HKD
View
Price last confirmed 13 days ago
A
Retailer 6
-
HK$2,351 HKD
View
A
Retailer 7
-
HK$2,939 HKD
View
B+
Retailer 8
-
HK$3,151 HKD
View
B+
Retailer 9
-
HK$3,198 HKD
View
B+
Retailer 10
-
HK$3,958 HKD
View
B
Retailer 11
-
HK$4,859 HKD
View
B
Retailer 12
-
HK$5,760 HKD
View
B
Retailer 13
-
HK$6,082 HKD
View
B
Retailer 14
-
HK$6,176 HKD
View
Retailer 15
-
HK$8,386 HKD
View
Price last confirmed 12 days ago
Most Expensive
B
Reve Diamonds
0D8A5DAB5 · Nov 6
HK$8,962 HKD
$1,144 USD
View
15 more retailers have this diamond
Prices start from HK$1,442 HKDSave up to HK$7,520 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 Cushion
HK$1,442 HKD