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Round|Lab Grown|IGI

1.21ct E VS1 Round Lab Grown Diamond

EX • E/VS1 • IGI LG818645105

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818645105

Diamond specifications and retailer prices

From $273 AUD
$192 USD
As of October 29, 2026
Save $2,638 AUD (91%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,911 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 LG818645105 or 818645105. Listed at 23 retailers as of October 27, 2026, with prices from $273 to $2,911, a $2,638 spread on the same certified stone. Queensmith lists it at $2,911. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818645105
Dimensions6.88 × 6.94 × 4.08 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.88 mm6.94 mm1.21 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818645105
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.0%

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 29
Current: $1,452 AUD|Low: $263 AUD|High: $1,607 AUD|Avg: $665 AUD
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 31, 2026
Retailer 12$273 AUD
Retailer 3$340 AUD
Retailer 2$458 AUD
Retailer 7$569 AUD
Retailer 5$571 AUD
Retailer 8$583 AUD
Retailer 6$617 AUD
Retailer 4$689 AUD
Retailer 9$829 AUD
Retailer 11$870 AUD
Retailer 1$1,452 AUD
Retailer 10$1,591 AUD

38 data points across 12 retailers

23 retailers$273 AUD to $2,911 AUD

A
Cheapest Retailer
-
$273 AUD
$192 USD
A
Retailer 2
-
$307 AUD
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$317 AUD
$223 USD
View
A
Retailer 4
-
$340 AUD
$239 USD
View
A
Retailer 5
-
$340 AUD
$239 USD
View
A
Retailer 6
-
$383 AUD
HK$2,100 HKD
View
B+
Retailer 7
-
$458 AUD
$322 USD
View
B+
Retailer 8
-
$565 AUD
$397 USD
View
A
Retailer 9
-
$569 AUD
£315 GBP
View
A
Retailer 10
-
$571 AUD
€382 EUR
View
A
Retailer 11
-
$583 AUD
ZAR 6,619 ZAR
View
B+
Retailer 12
-
$617 AUD
£341 GBP
View
B+
Retailer 13
-
$689 AUD
$484 USD
View
B+
Retailer 14
-
$829 AUD
View
B
Retailer 15
-
$870 AUD
$611 USD
View
B
Retailer 16
-
$1,092 AUD
$767 USD
View
B
Retailer 17
-
$1,109 AUD
SGD 1,053 SGD
View
B
Retailer 18
-
$1,145 AUD
$804 USD
View
B
Retailer 19
-
$1,169 AUD
$821 USD
View
B
Retailer 20
-
$1,452 AUD
$1,020 USD
View
B
Retailer 21
-
$1,591 AUD
£880 GBP
View
B
Retailer 22
-
$1,665 AUD
$1,169 USD
View
Most Expensive
B
Queensmith
LG818645105 · Oct 27
$2,911 AUD
£1,610 GBP
View
22 more retailers have this diamond
Prices start from $273 AUDSave up to $2,638 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
$273 AUD