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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 $245 AUD
$172 USD
As of October 29, 2026
Save $2,720 AUD (92%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,965 AUD 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 27, 2026, with prices from $245 to $2,965, a $2,720 spread on the same certified stone. Queensmith lists it at $2,965. 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: $542 AUD|Low: $235 AUD|High: $1,574 AUD|Avg: $652 AUD|-8.3%
Retailer 1
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Retailer 21
November 1, 2026
Retailer 20$245 AUD
Retailer 4$273 AUD
Retailer 13$285 AUD
Retailer 5$305 AUD
Retailer 6$305 AUD
Retailer 21$346 AUD
Retailer 8$413 AUD
Retailer 15$509 AUD
Retailer 17$522 AUD
Retailer 1$542 AUD
Retailer 2$555 AUD
Retailer 12$565 AUD
Retailer 7$658 AUD
Retailer 18$719 AUD
Retailer 19$762 AUD
Retailer 10$978 AUD
Retailer 14$1,002 AUD
Retailer 11$1,004 AUD
Retailer 3$1,056 AUD
Retailer 16$1,430 AUD
Retailer 9$1,574 AUD

35 data points across 21 retailers

22 retailers$245 AUD to $2,965 AUD

A
Cheapest Retailer
-
$245 AUD
$172 USD
A
Retailer 2
-
$273 AUD
$192 USD
View
Final sale: no returns
A
Retailer 3
-
$285 AUD
$200 USD
View
A
Retailer 4
-
$305 AUD
$214 USD
View
A
Retailer 5
-
$305 AUD
$214 USD
View
A
Retailer 6
-
$346 AUD
HK$1,900 HKD
View
B+
Retailer 7
-
$413 AUD
$290 USD
View
A
Retailer 8
-
$509 AUD
£282 GBP
View
A
Retailer 9
-
$522 AUD
ZAR 5,928 ZAR
View
A
Retailer 10
-
$542 AUD
£300 GBP
View
A
Retailer 11
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$555 AUD
$390 USD
View
A
Retailer 12
-
$565 AUD
€378 EUR
View
B+
Retailer 13
-
$658 AUD
$462 USD
View
Retailer 14
-
$719 AUD
$505 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$762 AUD
$535 USD
View
B+
Retailer 16
-
$978 AUD
$687 USD
View
B
Retailer 17
-
$1,002 AUD
SGD 951 SGD
View
B
Retailer 18
-
$1,004 AUD
$705 USD
View
B
Retailer 19
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$1,056 AUD
$742 USD
View
B
Retailer 20
-
$1,430 AUD
£791 GBP
View
B
Retailer 21
-
$1,574 AUD
$1,105 USD
View
Most Expensive
B
Queensmith
LG720540135 · Oct 27
$2,965 AUD
£1,640 GBP
View
21 more retailers have this diamond
Prices start from $245 AUDSave up to $2,720 AUD

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
$245 AUD