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Cushion|Lab Grown|IGI

1.23ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG836620499

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836620499

Diamond specifications and retailer prices

From HK$3,609 HKD
$460 USD
As of November 1, 2026
Save HK$15,064 HKD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$18,673 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836620499 or 836620499. Listed at 14 retailers as of October 31, 2026, with prices from HK$3,609 to HK$18,673, a HK$15,064 spread on the same certified stone. Brilliant Earth lists it at HK$18,673. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620499
Dimensions7.83 × 5.25 × 3.62 mm
L/W Ratio1.49
Girdle conditionFaceted
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
7.83 mm5.25 mm1.23 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620499
Side View
Table 60.0%Crown 34°Girdle: MED-THKPavilion 34.2°Culet: NoneDepth 69.0%

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 1
Current: HK$18,673 HKD|Low: HK$3,609 HKD|High: HK$21,751 HKD|Avg: HK$9,955 HKD|-10.5%
Brilliant Earth
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 1, 2026
Retailer 13HK$3,609 HKD
Retailer 10HK$3,884 HKD
Retailer 8HK$5,060 HKD
Retailer 7HK$6,104 HKD
Retailer 3HK$6,151 HKD
Retailer 2HK$6,380 HKD
Retailer 12HK$6,614 HKD
Retailer 9HK$6,676 HKD
Retailer 4HK$9,344 HKD
Retailer 5HK$12,514 HKD
Retailer 14HK$12,772 HKD
Retailer 6HK$14,946 HKD
Retailer 11HK$15,205 HKD
Brilliant EarthHK$18,673 HKD

39 data points across 14 retailers

14 retailersHK$3,609 HKD to HK$18,673 HKD

A
Cheapest Retailer
-
HK$3,609 HKD
$460 USD
Final sale: no returns
Retailer 2
-
HK$3,884 HKD
$495 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
HK$5,060 HKD
$645 USD
View
A
Retailer 4
-
HK$6,104 HKD
€741 EUR
View
A
Retailer 5
-
HK$6,151 HKD
$784 USD
View
A
Retailer 6
-
HK$6,380 HKD
£640 GBP
View
A
Retailer 7
-
HK$6,614 HKD
$843 USD
View
A
Retailer 8
-
HK$6,676 HKD
ZAR 13,747 ZAR
View
B+
Retailer 9
-
HK$9,344 HKD
$1,191 USD
View
Retailer 10
-
HK$12,514 HKD
$1,595 USD
View
Price last confirmed 18 days ago
B+
Retailer 11
-
HK$12,772 HKD
$1,628 USD
View
Retailer 12
-
HK$14,946 HKD
£1,500 GBP
View
Price last confirmed 23 days ago
B+
Retailer 13
-
HK$15,205 HKD
£1,526 GBP
View
Most Expensive
B
Brilliant Earth
21589747A · Oct 31
HK$18,673 HKD
$2,380 USD
View
13 more retailers have this diamond
Prices start from HK$3,609 HKDSave up to HK$15,064 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$3,609 HKD