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Round|Lab Grown|IGI

1.23ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG660459723

Certificate IGI LG660459723

Diamond specifications and retailer prices

From HK$4,684 HKD
As of November 6, 2026
Save HK$1,906 HKD (29%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$6,590 HKD at Zales · As of November 4, 2026
View at Zales

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660459723 or 660459723. Listed at 3 retailers as of November 4, 2026, with prices from HK$4,684 to HK$6,590, a HK$1,906 spread on the same certified stone. Zales lists it at HK$6,590. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459723
Dimensions6.80 × 6.85 mm
L/W Ratio1.01
Top View
6.80 mm6.85 mm1.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459723
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
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$4,684 HKD|Low: HK$4,684 HKD|High: HK$10,513 HKD|Avg: HK$8,218 HKD|-55.4%
Retailer 1
Retailer 2
Zales
November 6, 2026
Retailer 1HK$4,684 HKD
Retailer 2HK$6,590 HKD
ZalesHK$6,590 HKD

8 data points across 3 retailers

3 retailersHK$4,684 HKD to HK$6,590 HKD

B
Cheapest Retailer
-
HK$4,684 HKD
B
Retailer 2
-
HK$6,590 HKD
View
Most Expensive
B
Zales
524116910 · Nov 4
HK$6,590 HKD
$840 USD
View
2 more retailers have this diamond
Prices start from HK$4,684 HKDSave up to HK$1,906 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.

B
1.23ct Round
HK$4,684 HKD