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Round|Lab Grown|IGI

1.21ct E VS1 Round Lab Grown Diamond

ID • E/VS1 • IGI LG720540135

Shape and cutting style on the report: Round brilliant

Certificate IGI LG720540135

Diamond specifications and retailer prices

From HK$1,350 HKD
$172 USD
As of October 29, 2026
Save HK$7,324 HKD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$16,342 HKD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG720540135 or 720540135. Listed at 22 retailers as of October 28, 2026, with a 543% 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

1.21
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720540135
Dimensions6.91 × 6.95 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.91 mm6.95 mm1.21 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG720540135
Side View
Table 56.0%Crown 33.2°Girdle: MediumPavilion 40.1°Culet: NoneDepth 59.9%

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 29
Current: HK$2,980 HKD|Low: HK$1,295 HKD|High: HK$8,859 HKD|Avg: HK$3,709 HKD|-8.5%
Retailer 1
Retailer 2
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Retailer 21
October 29, 2026
Retailer 20HK$1,350 HKD
Retailer 4HK$1,507 HKD
Retailer 13HK$1,569 HKD
Retailer 5HK$1,679 HKD
Retailer 6HK$1,679 HKD
Retailer 21HK$1,908 HKD
Retailer 8HK$2,275 HKD
Retailer 12HK$2,816 HKD
Retailer 17HK$2,879 HKD
Retailer 1HK$2,980 HKD
Retailer 2HK$3,060 HKD
Retailer 16HK$3,131 HKD
Retailer 7HK$3,625 HKD
Retailer 18HK$3,962 HKD
Retailer 19HK$4,198 HKD
Retailer 10HK$5,390 HKD
Retailer 14HK$5,522 HKD
Retailer 11HK$5,532 HKD
Retailer 3HK$5,818 HKD
Retailer 15HK$7,882 HKD
Retailer 9HK$8,673 HKD

33 data points across 21 retailers

22 retailersHK$1,350 HKD to HK$8,673 HKD

A
Cheapest Retailer
-
HK$1,350 HKD
$172 USD
A
Retailer 2
-
HK$1,507 HKD
$192 USD
View
Final sale: no returns
A
Retailer 3
-
HK$1,569 HKD
$200 USD
View
A
Retailer 4
-
HK$1,679 HKD
$214 USD
View
A
Retailer 5
-
HK$1,679 HKD
$214 USD
View
A
Retailer 6
-
HK$1,908 HKD
View
B+
Retailer 7
-
HK$2,275 HKD
$290 USD
View
A
Retailer 8
-
HK$2,816 HKD
£283 GBP
View
A
Retailer 9
-
HK$2,879 HKD
ZAR 5,928 ZAR
View
A
Retailer 10
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HK$2,980 HKD
£299 GBP
View
A
Retailer 11
-
HK$3,060 HKD
$390 USD
View
A
Retailer 12
-
HK$3,131 HKD
€380 EUR
View
B+
Retailer 13
-
HK$3,625 HKD
$462 USD
View
Retailer 14
-
HK$3,962 HKD
$505 USD
View
Price last confirmed 11 days ago
B+
Retailer 15
-
HK$4,198 HKD
$535 USD
View
B+
Retailer 16
-
HK$5,390 HKD
$687 USD
View
B
Retailer 17
-
HK$5,522 HKD
SGD 951 SGD
View
B
Retailer 18
-
HK$5,532 HKD
$705 USD
View
B
Retailer 19
-
HK$5,818 HKD
$742 USD
View
B
Retailer 20
-
HK$7,882 HKD
£791 GBP
View
B
Retailer 21
-
HK$8,673 HKD
$1,105 USD
View
Most Expensive
Queensmith
LG720540135 · Oct 27
HK$16,342 HKD
£1,640 GBP
View
Price under review
21 more retailers have this diamond
Prices start from HK$1,350 HKDSave up to HK$7,324 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
1.21ct Round
HK$1,350 HKD