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Heart|Lab Grown|IGI

1.23ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG821616173

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG821616173

Diamond specifications and retailer prices

From HK$2,699 HKD
As of November 4, 2026
Save HK$9,379 HKD (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$12,078 HKD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.23ct lab-grown heart diamond

This 1.23ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821616173 or 821616173. Listed at 19 retailers as of November 4, 2026, with prices from HK$2,699 to HK$12,078, a HK$9,379 spread on the same certified stone. Reve Diamonds lists it at HK$12,078. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821616173
Dimensions7.47 × 6.81 × 4.24 mm
L/W Ratio1.10
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
7.47 mm6.81 mm1.23 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821616173
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 56.8%

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 4
Current: HK$5,280 HKD|Low: HK$2,322 HKD|High: HK$12,161 HKD|Avg: HK$6,146 HKD|+2.1%
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
Retailer 14
Retailer 15
Retailer 16
November 5, 2026
Retailer 16HK$2,417 HKD
Retailer 7HK$2,699 HKD
Retailer 3HK$2,997 HKD
Retailer 5HK$2,997 HKD
Retailer 15HK$4,041 HKD
Retailer 13HK$4,237 HKD
Retailer 12HK$4,864 HKD
Retailer 11HK$5,170 HKD
Retailer 1HK$5,280 HKD
Retailer 2HK$6,363 HKD
Retailer 10HK$7,367 HKD
Retailer 14HK$9,219 HKD
Retailer 6HK$9,619 HKD
Retailer 4HK$9,642 HKD
Retailer 8HK$10,003 HKD
Retailer 9HK$11,981 HKD

40 data points across 16 retailers

19 retailersHK$2,699 HKD to HK$12,078 HKD

Retailer 1
-
HK$2,417 HKD
Price last confirmed 13 days ago
A
Retailer 2
-
HK$2,699 HKD
View
Final sale: no returns
Retailer 3
-
HK$2,809 HKD
View
Price last confirmed 37 days ago
Retailer 4
-
HK$2,997 HKD
View
Price last confirmed 11 days ago
Retailer 5
-
HK$2,997 HKD
View
Price last confirmed 11 days ago
A
Retailer 6
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HK$3,311 HKD
View
A
Retailer 7
-
HK$4,041 HKD
View
A
Retailer 8
-
HK$4,237 HKD
View
A
Retailer 9
-
HK$4,864 HKD
View
A
Retailer 10
-
HK$5,170 HKD
View
A
Retailer 11
-
HK$5,280 HKD
View
B+
Retailer 12
-
HK$6,363 HKD
View
B+
Retailer 13
-
HK$7,367 HKD
View
B
Retailer 14
-
HK$9,219 HKD
View
B
Retailer 15
-
HK$9,619 HKD
View
Retailer 16
-
HK$9,642 HKD
View
Price last confirmed 11 days ago
B
Retailer 17
-
HK$10,003 HKD
View
B
Retailer 18
-
HK$11,981 HKD
View
Most Expensive
B
Reve Diamonds
7DB8BD3DA · Nov 4
HK$12,078 HKD
$1,539 USD
View
18 more retailers have this diamond
Prices start from HK$2,699 HKDSave up to HK$9,379 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 Heart
HK$2,699 HKD