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Round|Lab Grown|IGI

1.09ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG451057063

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451057063

Diamond specifications and retailer prices

From HK$5,021 HKD
$640 USD
As of October 31, 2026
Save HK$30,441 HKD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$35,462 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct 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 LG451057063 or 451057063. Listed at 13 retailers as of October 31, 2026, with prices from HK$5,021 to HK$35,462, a HK$30,441 spread on the same certified stone. MOH London lists it at HK$35,462. 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

1.09
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057063
Dimensions6.53 × 6.56 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.53 mm6.56 mm1.09 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057063
Side View
Table 56.5%Crown 35.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

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$35,462 HKD|Low: HK$5,021 HKD|High: HK$35,940 HKD|Avg: HK$15,229 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$5,021 HKD
Retailer 9HK$9,517 HKD
Retailer 13HK$10,348 HKD
Retailer 3HK$10,654 HKD
Retailer 10HK$11,039 HKD
Retailer 12HK$11,039 HKD
Retailer 4HK$12,396 HKD
Retailer 2HK$14,446 HKD
Retailer 5HK$15,464 HKD
Retailer 11HK$17,504 HKD
Retailer 8HK$18,890 HKD
Retailer 14HK$20,689 HKD
Retailer 6HK$21,144 HKD
MOH LondonHK$35,462 HKD

38 data points across 14 retailers

13 retailersHK$5,021 HKD to HK$35,462 HKD

A
Cheapest Retailer
-
HK$5,021 HKD
$640 USD
B+
Retailer 2
-
HK$9,517 HKD
$1,213 USD
View
B+
Retailer 3
-
HK$10,348 HKD
$1,319 USD
View
B+
Retailer 4
-
HK$10,654 HKD
$1,358 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$11,039 HKD
$1,407 USD
View
Retailer 6
-
HK$11,039 HKD
$1,407 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
HK$12,396 HKD
$1,580 USD
View
B+
Retailer 8
-
HK$14,446 HKD
£1,450 GBP
View
B
Retailer 9
-
HK$17,504 HKD
$2,231 USD
View
B
Retailer 10
-
HK$18,890 HKD
€2,293 EUR
View
B
Retailer 11
-
HK$20,689 HKD
$2,637 USD
View
B
Retailer 12
-
HK$21,144 HKD
$2,695 USD
View
Most Expensive
B
MOH London
LG451057063 · Nov 1
HK$35,462 HKD
£3,559 GBP
View
12 more retailers have this diamond
Prices start from HK$5,021 HKDSave up to HK$30,441 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
1.09ct Round
HK$5,021 HKD