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1.05ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG451055603

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055603

Diamond specifications and retailer prices

From HK$4,786 HKD
$610 USD
As of October 30, 2026
Save HK$26,581 HKD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$31,367 HKD at MOH London · As of October 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055603 or 451055603. Listed at 11 retailers as of October 29, 2026, with prices from HK$4,786 to HK$31,367, a HK$26,581 spread on the same certified stone. MOH London lists it at HK$31,367. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055603
Dimensions6.44 × 6.47 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.44 mm6.47 mm1.05 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055603
Side View
Table 57.5%Crown 34.9°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.4%

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 30
Current: HK$31,367 HKD|Low: HK$4,786 HKD|High: HK$31,576 HKD|Avg: HK$14,517 HKD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 2HK$4,786 HKD
Retailer 5HK$7,932 HKD
Retailer 9HK$8,873 HKD
Retailer 6HK$9,195 HKD
Retailer 8HK$9,195 HKD
Retailer 10HK$13,228 HKD
Retailer 7HK$14,695 HKD
Retailer 4HK$15,792 HKD
Retailer 11HK$19,222 HKD
Retailer 3HK$20,588 HKD
MOH LondonHK$31,367 HKD

20 data points across 11 retailers

11 retailersHK$4,786 HKD to HK$31,367 HKD

A
Cheapest Retailer
-
HK$4,786 HKD
$610 USD
B+
Retailer 2
-
HK$7,932 HKD
$1,011 USD
View
B+
Retailer 3
-
HK$8,630 HKD
$1,100 USD
View
B+
Retailer 4
-
HK$8,873 HKD
$1,131 USD
View
Final sale: no returns
Retailer 5
-
HK$9,195 HKD
$1,172 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
HK$9,195 HKD
$1,172 USD
View
B
Retailer 7
-
HK$14,695 HKD
$1,873 USD
View
B
Retailer 8
-
HK$15,792 HKD
€1,917 EUR
View
B
Retailer 9
-
HK$17,245 HKD
$2,198 USD
View
B
Retailer 10
-
HK$19,222 HKD
$2,450 USD
View
Most Expensive
B
MOH London
LG451055603 · Oct 29
HK$31,367 HKD
£3,148 GBP
View
10 more retailers have this diamond
Prices start from HK$4,786 HKDSave up to HK$26,581 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