Radiant|Lab Grown|IGI

1.09ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG635497403

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG635497403

Diamond specifications and retailer prices

From HK$1,640 HKD
$209 USD
As of October 30, 2026
Save HK$7,951 HKD (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$14,671 HKD at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG635497403 or 635497403. Listed at 24 retailers as of October 30, 2026, with a 485% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635497403
Dimensions7.19 × 5.13 × 3.49 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.19 mm5.13 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635497403
Side View
Table 65.0%Crown 43°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 68.0%

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$14,671 HKD|Low: HK$1,577 HKD|High: HK$15,456 HKD|Avg: HK$5,069 HKD|+1.6%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 6HK$1,640 HKD
Retailer 4HK$1,836 HKD
Retailer 9HK$1,899 HKD
Retailer 7HK$2,032 HKD
Retailer 10HK$2,032 HKD
Retailer 3HK$2,161 HKD
Retailer 17HK$2,746 HKD
Retailer 14HK$3,303 HKD
Retailer 12HK$3,511 HKD
Retailer 2HK$3,753 HKD
Retailer 11HK$4,496 HKD
Retailer 15HK$4,951 HKD
Retailer 18HK$4,972 HKD
Retailer 8HK$6,535 HKD
Retailer 16HK$7,349 HKD
Retailer 13HK$8,151 HKD
Retailer 19HK$9,493 HKD
Retailer 5HK$9,591 HKD
Brilliant EarthHK$14,671 HKD

39 data points across 19 retailers

24 retailersHK$1,640 HKD to HK$9,591 HKD

A
Cheapest Retailer
-
HK$1,640 HKD
$209 USD
A
Retailer 2
-
HK$1,836 HKD
$234 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,899 HKD
$242 USD
View
Retailer 4
-
HK$2,032 HKD
$259 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
HK$2,032 HKD
$259 USD
View
Retailer 6
-
HK$2,161 HKD
£217 GBP
View
Price last confirmed 16 days ago
A
Retailer 7
-
HK$2,746 HKD
$350 USD
View
A
Retailer 8
-
HK$3,303 HKD
€401 EUR
View
A
Retailer 9
-
HK$3,511 HKD
ZAR 7,229 ZAR
View
A
Retailer 10
-
HK$3,753 HKD
£377 GBP
View
A
Retailer 11
-
HK$4,139 HKD
$528 USD
View
A
Retailer 12
-
HK$4,496 HKD
$573 USD
View
A
Retailer 13
-
HK$4,951 HKD
$631 USD
View
A
Retailer 14
-
HK$4,972 HKD
A$975 AUD
View
A
Retailer 15
-
HK$5,045 HKD
$643 USD
View
B+
Retailer 16
-
HK$6,535 HKD
$833 USD
View
B+
Retailer 17
-
HK$6,943 HKD
$885 USD
View
B+
Retailer 18
-
HK$6,954 HKD
$886 USD
View
B+
Retailer 19
-
HK$7,349 HKD
A$1,441 AUD
View
B+
Retailer 20
-
HK$7,396 HKD
£742 GBP
View
B+
Retailer 21
-
HK$8,151 HKD
£818 GBP
View
Retailer 22
-
HK$9,493 HKD
$1,210 USD
View
Price last confirmed 14 days ago
B
Retailer 23
-
HK$9,591 HKD
$1,222 USD
View
Most Expensive
Brilliant Earth
10800488A · Oct 15
HK$14,671 HKD
$1,870 USD
View
Price last confirmed 17 days ago
23 more retailers have this diamond
Prices start from HK$1,640 HKDSave up to HK$7,951 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 Radiant
HK$1,640 HKD