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Cushion|Lab Grown|IGI

1.23ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG801682433

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG801682433

Diamond specifications and retailer prices

From HK$2,038 HKD
As of November 6, 2026
Save HK$3,762 HKD (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$8,212 HKD at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG801682433 or 801682433. Listed at 15 retailers as of November 6, 2026, with a 185% 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

1.23
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801682433
Dimensions6.71 × 5.53 × 4.06 mm
L/W Ratio1.21
Girdle conditionFaceted
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
6.71 mm5.53 mm1.23 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG801682433
Side View
Table 64.0%Crown 38°Girdle: STK-VTKPavilion 36.2°Culet: NoneDepth 73.4%

Caratlytics Score

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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$2,602 HKD|Low: HK$1,348 HKD|High: HK$8,769 HKD|Avg: HK$4,432 HKD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 7, 2026
Retailer 3HK$1,348 HKD
Retailer 4HK$2,038 HKD
Retailer 5HK$2,571 HKD
Retailer 1HK$2,602 HKD
Retailer 10HK$2,916 HKD
Retailer 7HK$3,347 HKD
Retailer 6HK$3,644 HKD
Retailer 2HK$4,060 HKD
Retailer 9HK$4,859 HKD
Retailer 12HK$5,251 HKD
Retailer 8HK$5,800 HKD
Retailer 11HK$7,014 HKD
Reve DiamondsHK$8,212 HKD

38 data points across 13 retailers

15 retailersHK$2,038 HKD to HK$5,800 HKD

B+
Cheapest Retailer
-
HK$2,038 HKD
A
Retailer 2
-
HK$2,571 HKD
View
Retailer 3
-
HK$2,602 HKD
View
Retailer 4
-
HK$2,916 HKD
View
Price last confirmed 10 days ago
Retailer 5
-
HK$3,010 HKD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
HK$3,347 HKD
View
B+
Retailer 7
-
HK$3,644 HKD
View
Retailer 8
-
HK$3,746 HKD
View
Price last confirmed 12 days ago
Retailer 9
-
HK$4,060 HKD
View
Price last confirmed 12 days ago
Retailer 10
-
HK$4,820 HKD
View
Price last confirmed 44 days ago
B+
Retailer 11
-
HK$4,859 HKD
View
Retailer 12
-
HK$5,251 HKD
View
Price last confirmed 11 days ago
B
Retailer 13
-
HK$5,800 HKD
View
Retailer 14
-
HK$7,014 HKD
View
Price last confirmed 12 days ago
Most Expensive
Reve Diamonds
E41CDD5BE · Oct 25
HK$8,212 HKD
$1,048 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from HK$2,038 HKDSave up to HK$3,762 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
1.23ct Cushion
HK$2,038 HKD