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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 $192 USD
As of October 29, 2026
Save $1,853 USD (91%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,045 USD 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 $192 to $2,045, a $1,853 spread on the same certified stone. Queensmith lists it at $2,045. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $434 USD|Low: $185 USD|High: $1,129 USD|Avg: $456 USD|+6.4%
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 29, 2026
Retailer 11$192 USD
Retailer 4$223 USD
Retailer 2$239 USD
Retailer 12$322 USD
Retailer 6$401 USD
Retailer 5$402 USD
Retailer 7$410 USD
Retailer 1$434 USD
Retailer 3$484 USD
Retailer 8$582 USD
Retailer 10$611 USD
Retailer 9$1,118 USD

37 data points across 12 retailers

23 retailers$192 USD to $2,045 USD

A
Cheapest Retailer
-
$192 USD
A
Retailer 2
-
$216 USD
View
Final sale: no returns
A
Retailer 3
-
$223 USD
View
A
Retailer 4
-
$239 USD
View
A
Retailer 5
-
$239 USD
View
A
Retailer 6
-
$269 USD
HK$2,100 HKD
View
B+
Retailer 7
-
$322 USD
View
B+
Retailer 8
-
$397 USD
View
A
Retailer 9
-
$401 USD
£316 GBP
View
B+
Retailer 10
-
$402 USD
€383 EUR
View
A
Retailer 11
-
$410 USD
ZAR 6,619 ZAR
View
B+
Retailer 12
-
$434 USD
£341 GBP
View
B+
Retailer 13
-
$484 USD
View
B+
Retailer 14
-
$582 USD
A$896 AUD
View
B
Retailer 15
-
$611 USD
View
B
Retailer 16
-
$767 USD
View
B
Retailer 17
-
$779 USD
SGD 1,053 SGD
View
B
Retailer 18
-
$804 USD
View
B
Retailer 19
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$821 USD
View
B
Retailer 20
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$1,050 USD
View
Price last confirmed 39 days ago
B
Retailer 21
-
$1,118 USD
£880 GBP
View
B
Retailer 22
-
$1,169 USD
View
Most Expensive
B
Queensmith
LG818645105 · Oct 27
$2,045 USD
£1,610 GBP
View
22 more retailers have this diamond
Prices start from $192 USDSave up to $1,853 USD

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
$192 USD