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Round|Lab Grown|IGI

1.22ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG628425720

Shape and cutting style on the report: Round brilliant

Certificate IGI LG628425720

Diamond specifications and retailer prices

From $792 SGD
$620 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: $792 SGD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG628425720 or 628425720. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.22
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628425720
Dimensions6.90 × 6.84 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.90 mm6.84 mm1.22 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628425720
Side View
Table 59.0%Crown 33.3°Girdle: Med.Pavilion 40.8°Culet: NoneDepth 60.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $792 SGD|Low: $407 SGD|High: $2,235 SGD|Avg: $839 SGD|-12.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
April 24, 2026
Retailer 7$407 SGD
Retailer 5$483 SGD
Retailer 2$534 SGD
Retailer 8$648 SGD
Retailer 9$706 SGD
Retailer 6$765 SGD
Brilliant Earth$792 SGD
Retailer 4$842 SGD
Retailer 3$1,865 SGD

55 data points across 9 retailers

1 retailer

B
Brilliant Earth
10165241Y · Nov 5
$792 SGD
$620 USD
View

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.

B
1.22ct Round
$792 SGD