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Round|Lab Grown|IGI

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 $254 AUD
As of November 1, 2026
Save $1,221 AUD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,475 AUD 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 $254 to $1,475, a $1,221 spread on the same certified stone. MOH London lists it at $1,475. 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

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: Nov 1
Current: $1,475 AUD|Low: $241 AUD|High: $1,491 AUD|Avg: $610 AUD|-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 6, 2026
Retailer 11$254 AUD
Retailer 12$284 AUD
Retailer 6$307 AUD
Retailer 5$316 AUD
Retailer 2$541 AUD
Retailer 4$559 AUD
Retailer 10$564 AUD
Retailer 3$604 AUD
Retailer 9$623 AUD
Retailer 14$674 AUD
Retailer 7$693 AUD
Retailer 8$834 AUD
Retailer 13$886 AUD
MOH London$1,475 AUD

35 data points across 14 retailers

14 retailers$254 AUD to $1,475 AUD

A
Cheapest Retailer
-
$254 AUD
A
Retailer 2
-
$284 AUD
View
Final sale: no returns
Retailer 3
-
$307 AUD
View
Price last confirmed 52 days ago
Retailer 4
-
$316 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$541 AUD
View
A
Retailer 6
-
$559 AUD
View
A
Retailer 7
-
$564 AUD
View
A
Retailer 8
-
$604 AUD
View
A
Retailer 9
-
$623 AUD
View
B+
Retailer 10
-
$674 AUD
View
B+
Retailer 11
-
$693 AUD
View
B+
Retailer 12
-
$834 AUD
View
B
Retailer 13
-
$886 AUD
View
Most Expensive
B
MOH London
LG800683786 · Nov 1
$1,475 AUD
£813 GBP
View
13 more retailers have this diamond
Prices start from $254 AUDSave up to $1,221 AUD

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
$254 AUD