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Round|Lab Grown|IGI

1.05ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG492123220

Shape and cutting style on the report: Round brilliant

Certificate IGI LG492123220

Diamond specifications and retailer prices

From HK$4,786 HKD
$610 USD
As of October 31, 2026
Save HK$29,401 HKD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$34,187 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.05ct lab-grown round diamond

This 1.05ct 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 LG492123220 or 492123220. Listed at 13 retailers as of October 31, 2026, with prices from HK$4,786 to HK$34,187, a HK$29,401 spread on the same certified stone. MOH London lists it at HK$34,187. 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

1.05
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492123220
Dimensions6.54 × 6.56 × 4.01 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.54 mm6.56 mm1.05 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492123220
Side View
Table 57.0%Crown 32.9°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.2%

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: Oct 31
Current: HK$34,187 HKD|Low: HK$4,786 HKD|High: HK$34,645 HKD|Avg: HK$14,787 HKD|-1.1%
MOH London
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 7HK$4,786 HKD
Retailer 9HK$9,172 HKD
Retailer 3HK$9,980 HKD
Retailer 13HK$10,278 HKD
Retailer 10HK$10,639 HKD
Retailer 12HK$10,639 HKD
Retailer 4HK$12,004 HKD
Retailer 2HK$13,928 HKD
Retailer 5HK$14,970 HKD
Retailer 11HK$16,892 HKD
Retailer 8HK$18,222 HKD
Retailer 14HK$19,944 HKD
Retailer 6HK$20,972 HKD
MOH LondonHK$34,187 HKD

36 data points across 14 retailers

13 retailersHK$4,786 HKD to HK$34,187 HKD

A
Cheapest Retailer
-
HK$4,786 HKD
$610 USD
B+
Retailer 2
-
HK$9,172 HKD
$1,169 USD
View
B+
Retailer 3
-
HK$9,980 HKD
$1,272 USD
View
B+
Retailer 4
-
HK$10,278 HKD
$1,310 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$10,639 HKD
$1,356 USD
View
Retailer 6
-
HK$10,639 HKD
$1,356 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
HK$12,004 HKD
$1,530 USD
View
B+
Retailer 8
-
HK$13,928 HKD
£1,398 GBP
View
B
Retailer 9
-
HK$16,892 HKD
$2,153 USD
View
B
Retailer 10
-
HK$18,222 HKD
€2,212 EUR
View
B
Retailer 11
-
HK$19,944 HKD
$2,542 USD
View
B
Retailer 12
-
HK$20,972 HKD
$2,673 USD
View
Most Expensive
B
MOH London
LG492123220 · Nov 1
HK$34,187 HKD
£3,431 GBP
View
12 more retailers have this diamond
Prices start from HK$4,786 HKDSave up to HK$29,401 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
1.05ct Round
HK$4,786 HKD