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Round|Lab Grown|IGI

1.23ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG407945468

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407945468

Diamond specifications and retailer prices

From HK$4,707 HKD
As of November 5, 2026
Save HK$31,629 HKD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$36,337 HKD at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407945468 or 407945468. Listed at 13 retailers as of November 5, 2026, with prices from HK$4,707 to HK$36,337, a HK$31,629 spread on the same certified stone. MOH London lists it at HK$36,337. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407945468
Dimensions6.83 × 6.86 × 4.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.83 mm6.86 mm1.23 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407945468
Side View
Table 55.0%Crown 35.9°GirdlePavilion 40.9°Culet: NoneDepth 62.8%

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 5
Current: HK$36,337 HKD|Low: HK$4,707 HKD|High: HK$36,914 HKD|Avg: HK$16,815 HKD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6HK$4,707 HKD
Retailer 5HK$10,999 HKD
Retailer 10HK$11,964 HKD
Retailer 3HK$12,309 HKD
Retailer 7HK$12,756 HKD
Retailer 9HK$12,756 HKD
Retailer 2HK$16,600 HKD
Retailer 8HK$20,131 HKD
Retailer 4HK$21,614 HKD
Retailer 11HK$23,912 HKD
MOH LondonHK$36,337 HKD

46 data points across 11 retailers

13 retailersHK$4,707 HKD to HK$36,337 HKD

A
Cheapest Retailer
-
HK$4,707 HKD
B+
Retailer 2
-
HK$10,999 HKD
View
B+
Retailer 3
-
HK$11,964 HKD
View
B+
Retailer 4
-
HK$12,309 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$12,756 HKD
View
Retailer 6
-
HK$12,756 HKD
View
Price last confirmed 25 days ago
B
Retailer 7
-
HK$14,082 HKD
View
B+
Retailer 8
-
HK$16,600 HKD
View
B
Retailer 9
-
HK$20,131 HKD
View
B
Retailer 10
-
HK$21,614 HKD
View
B
Retailer 11
-
HK$23,151 HKD
View
B
Retailer 12
-
HK$23,912 HKD
View
Most Expensive
B
MOH London
LG407945468 · Nov 5
HK$36,337 HKD
£3,647 GBP
View
12 more retailers have this diamond
Prices start from HK$4,707 HKDSave up to HK$31,629 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 Round
HK$4,707 HKD