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Round|Lab Grown|IGI

1.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG841678729

Shape and cutting style on the report: Round brilliant

Certificate IGI LG841678729

Diamond specifications and retailer prices

From $470 NZD
As of November 3, 2026
Save $2,368 NZD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,838 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG841678729 or 841678729. Listed at 16 retailers as of November 3, 2026, with prices from $470 to $2,838, a $2,368 spread on the same certified stone. Brilliant Earth lists it at $2,838. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841678729
Dimensions6.97 × 7.02 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
6.97 mm7.02 mm1.29 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841678729
Side View
Table 58.0%Crown 33.9°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.1%

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 3
Current: $2,838 NZD|Low: $470 NZD|High: $3,246 NZD|Avg: $1,485 NZD|-12.6%
Brilliant Earth
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
Retailer 15
Retailer 16
November 5, 2026
Retailer 3$470 NZD
Retailer 15$545 NZD
Retailer 16$873 NZD
Retailer 9$921 NZD
Retailer 4$969 NZD
Retailer 12$976 NZD
Retailer 14$1,015 NZD
Retailer 11$1,428 NZD
Retailer 6$1,456 NZD
Retailer 5$1,788 NZD
Retailer 7$1,872 NZD
Retailer 13$2,104 NZD
Retailer 10$2,147 NZD
Retailer 8$2,196 NZD
Retailer 2$2,326 NZD
Brilliant Earth$2,838 NZD

16 data points across 16 retailers

16 retailers$470 NZD to $2,838 NZD

A
Cheapest Retailer
-
$470 NZD
A
Retailer 2
-
$545 NZD
View
A
Retailer 3
-
$873 NZD
View
A
Retailer 4
-
$921 NZD
View
A
Retailer 5
-
$969 NZD
View
A
Retailer 6
-
$976 NZD
View
A
Retailer 7
-
$1,015 NZD
View
A
Retailer 8
-
$1,428 NZD
View
B+
Retailer 9
-
$1,456 NZD
View
B+
Retailer 10
-
$1,788 NZD
View
B+
Retailer 11
-
$1,872 NZD
View
B+
Retailer 12
-
$2,104 NZD
View
B+
Retailer 13
-
$2,147 NZD
View
B+
Retailer 14
-
$2,196 NZD
View
B+
Retailer 15
-
$2,326 NZD
View
Most Expensive
B+
Brilliant Earth
22208645A · Nov 4
$2,838 NZD
$1,600 USD
View
15 more retailers have this diamond
Prices start from $470 NZDSave up to $2,368 NZD

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
$470 NZD