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Round|Lab Grown|IGI

1.21ct F SI1 Round Lab Grown Diamond

VG • F/SI1 • IGI LG763668397

Shape and cutting style on the report: Round brilliant

Certificate IGI LG763668397

Diamond specifications and retailer prices

From $206 SGD
As of November 1, 2026
Save $987 SGD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,193 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG763668397 or 763668397. Listed at 13 retailers as of November 1, 2026, with prices from $206 to $1,193, a $987 spread on the same certified stone. MOH London lists it at $1,193. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle36.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG763668397
Dimensions6.92 × 6.90 × 4.05 mm
L/W Ratio1.00
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
6.92 mm6.90 mm1.21 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG763668397
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 58.7%

Caratlytics Score

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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: Nov 1
Current: $1,193 SGD|Low: $195 SGD|High: $1,227 SGD|Avg: $527 SGD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10$206 SGD
Retailer 11$231 SGD
Retailer 5$254 SGD
Retailer 4$255 SGD
Retailer 2$443 SGD
Retailer 8$445 SGD
Retailer 13$460 SGD
Retailer 3$473 SGD
Retailer 12$575 SGD
Retailer 6$577 SGD
Retailer 7$697 SGD
Retailer 9$705 SGD
MOH London$1,193 SGD

36 data points across 13 retailers

13 retailers$206 SGD to $1,193 SGD

A
Cheapest Retailer
-
$206 SGD
A
Retailer 2
-
$231 SGD
View
Final sale: no returns
Retailer 3
-
$254 SGD
View
Price last confirmed 52 days ago
Retailer 4
-
$255 SGD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
$443 SGD
View
B+
Retailer 6
-
$445 SGD
View
B
Retailer 7
-
$460 SGD
View
B+
Retailer 8
-
$473 SGD
View
B+
Retailer 9
-
$575 SGD
View
B+
Retailer 10
-
$577 SGD
View
B
Retailer 11
-
$697 SGD
View
B
Retailer 12
-
$705 SGD
View
Most Expensive
B
MOH London
LG763668397 · Nov 1
$1,193 SGD
£733 GBP
View
12 more retailers have this diamond
Prices start from $206 SGDSave up to $987 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
$206 SGD