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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 $220 SGD
$172 USD
As of October 29, 2026
Save $1,193 SGD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,663 SGD 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 29, 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: $458 SGD|Low: $211 SGD|High: $1,443 SGD|Avg: $604 SGD|-11.1%
Retailer 1
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Retailer 21
October 30, 2026
Retailer 20$220 SGD
Retailer 4$245 SGD
Retailer 13$256 SGD
Retailer 5$274 SGD
Retailer 6$274 SGD
Retailer 21$311 SGD
Retailer 8$371 SGD
Retailer 1$458 SGD
Retailer 17$469 SGD
Retailer 12$487 SGD
Retailer 2$499 SGD
Retailer 16$510 SGD
Retailer 7$591 SGD
Retailer 18$646 SGD
Retailer 19$684 SGD
Retailer 10$878 SGD
Retailer 14$900 SGD
Retailer 11$901 SGD
Retailer 3$948 SGD
Retailer 15$1,284 SGD
Retailer 9$1,413 SGD

33 data points across 21 retailers

22 retailers$220 SGD to $1,413 SGD

A
Cheapest Retailer
-
$220 SGD
$172 USD
A
Retailer 2
-
$245 SGD
$192 USD
View
Final sale: no returns
A
Retailer 3
-
$256 SGD
$200 USD
View
A
Retailer 4
-
$274 SGD
$214 USD
View
A
Retailer 5
-
$274 SGD
$214 USD
View
A
Retailer 6
-
$311 SGD
HK$1,900 HKD
View
B+
Retailer 7
-
$371 SGD
$290 USD
View
A
Retailer 8
-
$458 SGD
£282 GBP
View
A
Retailer 9
-
$469 SGD
ZAR 5,928 ZAR
View
A
Retailer 10
-
$487 SGD
£300 GBP
View
A
Retailer 11
-
$499 SGD
$390 USD
View
A
Retailer 12
-
$510 SGD
€380 EUR
View
B+
Retailer 13
-
$591 SGD
$462 USD
View
Retailer 14
-
$646 SGD
$505 USD
View
Price last confirmed 12 days ago
B+
Retailer 15
-
$684 SGD
$535 USD
View
B+
Retailer 16
-
$878 SGD
$687 USD
View
B
Retailer 17
-
$900 SGD
View
B
Retailer 18
-
$901 SGD
$705 USD
View
B
Retailer 19
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$948 SGD
$742 USD
View
B
Retailer 20
-
$1,284 SGD
£791 GBP
View
B
Retailer 21
-
$1,413 SGD
$1,105 USD
View
Most Expensive
Queensmith
LG720540135 · Oct 27
$2,663 SGD
£1,640 GBP
View
Price under review
21 more retailers have this diamond
Prices start from $220 SGDSave up to $1,193 SGD

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
$220 SGD