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1.29ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG800683786

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800683786

Diamond specifications and retailer prices

From $227 SGD
As of November 1, 2026
Save $1,091 SGD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,319 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG800683786 or 800683786. Listed at 14 retailers as of November 1, 2026, with prices from $227 to $1,319, a $1,091 spread on the same certified stone. MOH London lists it at $1,319. 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

1.29
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800683786
Dimensions6.98 × 6.92 × 4.28 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
6.98 mm6.92 mm1.29 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800683786
Side View
Table 57.0%Crown 35.2°Girdle: Slightly ThickPavilion 40.3°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,319 SGD|Low: $216 SGD|High: $1,333 SGD|Avg: $546 SGD|-1.1%
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
Retailer 14
November 4, 2026
Retailer 11$227 SGD
Retailer 12$254 SGD
Retailer 6$275 SGD
Retailer 5$282 SGD
Retailer 8$478 SGD
Retailer 4$499 SGD
Retailer 10$505 SGD
Retailer 3$540 SGD
Retailer 9$557 SGD
Retailer 14$603 SGD
Retailer 2$619 SGD
Retailer 7$746 SGD
Retailer 13$792 SGD
MOH London$1,319 SGD

34 data points across 14 retailers

14 retailers$227 SGD to $1,319 SGD

A
Cheapest Retailer
-
$227 SGD
A
Retailer 2
-
$254 SGD
View
Final sale: no returns
Retailer 3
-
$275 SGD
View
Price last confirmed 52 days ago
Retailer 4
-
$282 SGD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$478 SGD
View
A
Retailer 6
-
$499 SGD
View
A
Retailer 7
-
$505 SGD
View
A
Retailer 8
-
$540 SGD
View
A
Retailer 9
-
$557 SGD
View
B+
Retailer 10
-
$603 SGD
View
B+
Retailer 11
-
$619 SGD
View
B+
Retailer 12
-
$746 SGD
View
B
Retailer 13
-
$792 SGD
View
Most Expensive
B
MOH London
LG800683786 · Nov 1
$1,319 SGD
£813 GBP
View
13 more retailers have this diamond
Prices start from $227 SGDSave up to $1,091 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
1.29ct Round
$227 SGD