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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG770639320

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770639320

Diamond specifications and retailer prices

From HK$1,161 HKD
$148 USD
As of October 29, 2026
Save HK$6,906 HKD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$8,067 HKD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770639320 or 770639320. Listed at 18 retailers as of October 29, 2026, with prices from HK$1,161 to HK$8,067, a HK$6,906 spread on the same certified stone. Reve Diamonds lists it at HK$8,067. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770639320
Dimensions6.61 × 6.63 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.61 mm6.63 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770639320
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: HK$2,816 HKD|Low: HK$1,114 HKD|High: HK$6,825 HKD|Avg: HK$3,157 HKD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9HK$1,161 HKD
Retailer 3HK$1,349 HKD
Retailer 11HK$1,444 HKD
Retailer 5HK$2,491 HKD
Retailer 12HK$2,660 HKD
Retailer 6HK$2,735 HKD
Retailer 1HK$2,816 HKD
Retailer 2HK$3,381 HKD
Retailer 10HK$4,001 HKD
Retailer 4HK$4,637 HKD
Retailer 7HK$4,896 HKD
Retailer 8HK$6,746 HKD

42 data points across 12 retailers

18 retailersHK$1,161 HKD to HK$8,067 HKD

A
Cheapest Retailer
-
HK$1,161 HKD
$148 USD
A
Retailer 2
-
HK$1,295 HKD
$165 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,349 HKD
$172 USD
View
A
Retailer 4
-
HK$1,444 HKD
$184 USD
View
A
Retailer 5
-
HK$1,444 HKD
$184 USD
View
A
Retailer 6
-
HK$2,424 HKD
$309 USD
View
A
Retailer 7
-
HK$2,491 HKD
£250 GBP
View
B+
Retailer 8
-
HK$2,660 HKD
$339 USD
View
B+
Retailer 9
-
HK$2,735 HKD
€332 EUR
View
A
Retailer 10
-
HK$2,816 HKD
£283 GBP
View
B+
Retailer 11
-
HK$3,381 HKD
$431 USD
View
B
Retailer 12
-
HK$3,703 HKD
$472 USD
View
B+
Retailer 13
-
HK$4,001 HKD
$510 USD
View
B
Retailer 14
-
HK$4,637 HKD
$591 USD
View
B
Retailer 15
-
HK$4,896 HKD
$624 USD
View
B
Retailer 16
-
HK$5,068 HKD
$646 USD
View
B
Retailer 17
-
HK$6,746 HKD
£677 GBP
View
Most Expensive
B
Reve Diamonds
0394E2DC1 · Oct 30
HK$8,067 HKD
$1,028 USD
View
17 more retailers have this diamond
Prices start from HK$1,161 HKDSave up to HK$6,906 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$1,161 HKD