CaratHunter
Plans
Radiant|Lab Grown|IGI

1.21ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG743538298

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

Certificate IGI LG743538298

Diamond specifications and retailer prices

From $334 AUD
As of November 4, 2026
Save $2,366 AUD (88%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $2,700 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG743538298 or 743538298. Listed at 29 retailers as of November 4, 2026, with prices from $334 to $2,700, a $2,366 spread on the same certified stone. Brilliant Earth lists it at $2,700. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743538298
Dimensions7.89 × 5.27 × 3.40 mm
L/W Ratio1.50
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
7.89 mm5.27 mm1.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743538298
Side View
Table 62.0%Crown 41.1°Girdle: MediumPavilion 32.6°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,700 AUD|Low: $334 AUD|High: $3,414 AUD|Avg: $1,182 AUD|-20.9%
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
November 6, 2026
Retailer 14$334 AUD
Retailer 11$371 AUD
Retailer 4$586 AUD
Retailer 10$694 AUD
Retailer 9$714 AUD
Retailer 5$756 AUD
Retailer 2$773 AUD
Retailer 8$1,013 AUD
Retailer 6$1,090 AUD
Retailer 13$1,336 AUD
Retailer 7$1,654 AUD
Retailer 3$1,694 AUD
Retailer 12$2,650 AUD
Brilliant Earth$2,700 AUD

45 data points across 14 retailers

29 retailers$334 AUD to $2,700 AUD

A
Cheapest Retailer
-
$334 AUD
Retailer 2
-
$334 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$334 AUD
View
Price last confirmed 37 days ago
A
Retailer 4
-
$371 AUD
View
Final sale: no returns
Retailer 5
-
$387 AUD
View
Price last confirmed 40 days ago
Retailer 6
-
$409 AUD
View
Price last confirmed 40 days ago
Retailer 7
-
$409 AUD
View
Price last confirmed 37 days ago
Retailer 8
-
$414 AUD
View
Price last confirmed 34 days ago
A
Retailer 9
-
$493 AUD
View
A
Retailer 10
-
$586 AUD
View
A
Retailer 11
-
$694 AUD
View
A
Retailer 12
-
$714 AUD
View
A
Retailer 13
-
$756 AUD
View
A
Retailer 14
-
$773 AUD
View
A
Retailer 15
-
$904 AUD
View
A
Retailer 16
-
$1,013 AUD
View
B+
Retailer 17
-
$1,090 AUD
View
B+
Retailer 18
-
$1,330 AUD
View
Retailer 19
-
$1,330 AUD
View
Price last confirmed 37 days ago
Retailer 20
-
$1,330 AUD
View
Price last confirmed 27 days ago
B+
Retailer 21
-
$1,336 AUD
View
B+
Retailer 22
-
$1,403 AUD
View
B+
Retailer 23
-
$1,404 AUD
View
B+
Retailer 24
-
$1,518 AUD
View
B+
Retailer 25
-
$1,654 AUD
View
Retailer 26
-
$1,694 AUD
View
Price last confirmed 29 days ago
B
Retailer 27
-
$1,857 AUD
View
Retailer 28
-
$2,650 AUD
View
Price last confirmed 19 days ago
Most Expensive
B
Brilliant Earth
16656546A · Nov 4
$2,700 AUD
$1,890 USD
View
28 more retailers have this diamond
Prices start from $334 AUDSave up to $2,366 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
1.21ct Radiant
$334 AUD