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1.03ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG451056228

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056228

Diamond specifications and retailer prices

From HK$4,707 HKD
$600 USD
As of October 31, 2026
Save HK$28,841 HKD (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$33,549 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.03ct lab-grown round diamond

This 1.03ct 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 LG451056228 or 451056228. Listed at 12 retailers as of October 31, 2026, with prices from HK$4,707 to HK$33,549, a HK$28,841 spread on the same certified stone. MOH London lists it at HK$33,549. 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

1.03
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056228
Dimensions6.44 × 6.41 × 4.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.44 mm6.41 mm1.03 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056228
Side View
Table 55.5%Crown 34.1°Girdle: MED-STKPavilion 41.4°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 31
Current: HK$33,549 HKD|Low: HK$4,707 HKD|High: HK$34,007 HKD|Avg: HK$15,844 HKD
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
November 1, 2026
Retailer 6HK$4,707 HKD
Retailer 7HK$9,007 HKD
Retailer 11HK$10,082 HKD
Retailer 8HK$10,443 HKD
Retailer 10HK$10,443 HKD
Retailer 5HK$11,471 HKD
Retailer 12HK$11,808 HKD
Retailer 13HK$14,726 HKD
Retailer 9HK$16,594 HKD
Retailer 2HK$17,852 HKD
Retailer 3HK$20,579 HKD
Retailer 4HK$29,902 HKD
MOH LondonHK$33,549 HKD

26 data points across 13 retailers

12 retailersHK$4,707 HKD to HK$33,549 HKD

A
Cheapest Retailer
-
HK$4,707 HKD
$600 USD
B+
Retailer 2
-
HK$9,007 HKD
$1,148 USD
View
B+
Retailer 3
-
HK$9,791 HKD
$1,248 USD
View
B+
Retailer 4
-
HK$10,082 HKD
$1,285 USD
View
Final sale: no returns
Retailer 5
-
HK$10,443 HKD
$1,331 USD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
HK$10,443 HKD
$1,331 USD
View
B
Retailer 7
-
HK$11,808 HKD
$1,505 USD
View
B
Retailer 8
-
HK$16,594 HKD
$2,115 USD
View
B
Retailer 9
-
HK$17,852 HKD
€2,167 EUR
View
B
Retailer 10
-
HK$19,575 HKD
$2,495 USD
View
B
Retailer 11
-
HK$20,579 HKD
$2,623 USD
View
Most Expensive
B
MOH London
LG451056228 · Nov 1
HK$33,549 HKD
£3,367 GBP
View
11 more retailers have this diamond
Prices start from HK$4,707 HKDSave up to HK$28,841 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
1.03ct Round
HK$4,707 HKD