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Radiant|Lab Grown|IGI

1.29ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG782688903

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG782688903

Diamond specifications and retailer prices

From $673 AUD
As of November 4, 2026
Save $1,998 AUD (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,853 AUD at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 1.29ct lab-grown radiant diamond

This 1.29ct lab-grown radiant 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 LG782688903 or 782688903. Listed at 13 retailers as of November 4, 2026, with a 297% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782688903
Dimensions7.70 × 5.48 × 3.59 mm
L/W Ratio1.41
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
7.70 mm5.48 mm1.29 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782688903
Side View
Table 62.0%Crown 40.9°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 65.5%

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 4
Current: $2,628 AUD|Low: $673 AUD|High: $3,957 AUD|Avg: $1,479 AUD|-1.5%
Rare Carat
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 5, 2026
Retailer 3$673 AUD
Retailer 8$750 AUD
Retailer 5$770 AUD
Retailer 2$817 AUD
Retailer 11$850 AUD
Retailer 12$954 AUD
Retailer 7$1,079 AUD
Retailer 13$1,641 AUD
Retailer 4$1,694 AUD
Retailer 6$1,736 AUD
Retailer 10$1,777 AUD
Rare Carat$2,628 AUD
Retailer 9$2,671 AUD

37 data points across 13 retailers

13 retailers$673 AUD to $2,671 AUD

A
Cheapest Retailer
-
$673 AUD
A
Retailer 2
-
$750 AUD
View
A
Retailer 3
-
$817 AUD
View
A
Retailer 4
-
$850 AUD
View
A
Retailer 5
-
$954 AUD
View
B+
Retailer 6
-
$1,079 AUD
View
B+
Retailer 7
-
$1,641 AUD
View
B+
Retailer 8
-
$1,694 AUD
View
B+
Retailer 9
-
$1,736 AUD
View
B+
Retailer 10
-
$1,777 AUD
View
Retailer 11
-
$2,628 AUD
View
Price last confirmed 19 days ago
B
Retailer 12
-
$2,671 AUD
View
Most Expensive
Rare Carat
LC9036889OA782 · Aug 9
$2,853 AUD
$1,997 USD
View
Price last confirmed 88 days ago
12 more retailers have this diamond
Prices start from $673 AUDSave up to $1,998 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 Radiant
$673 AUD