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Round|Lab Grown|IGI

1.21ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG786633852

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786633852

Diamond specifications and retailer prices

From $559 AUD
$393 USD
As of October 29, 2026
Save $3,298 AUD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,858 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG786633852 or 786633852. Listed at 21 retailers as of October 29, 2026, with prices from $559 to $3,858, a $3,298 spread on the same certified stone. Brilliant Earth lists it at $3,858. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786633852
Dimensions6.87 × 6.89 × 4.18 mm
L/W Ratio1.00
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
6.87 mm6.89 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786633852
Side View
Table 57.0%Crown 34.4°Girdle: MediumPavilion 40.3°Culet: NoneDepth 60.8%

Caratlytics Score

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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: Oct 29
Current: $3,858 AUD|Low: $538 AUD|High: $3,858 AUD|Avg: $1,332 AUD
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
October 30, 2026
Retailer 14$559 AUD
Retailer 4$626 AUD
Retailer 6$626 AUD
Retailer 7$695 AUD
Retailer 15$695 AUD
Retailer 12$904 AUD
Retailer 8$932 AUD
Retailer 3$1,024 AUD
Retailer 2$1,135 AUD
Retailer 11$1,193 AUD
Retailer 10$1,217 AUD
Retailer 13$1,668 AUD
Retailer 16$2,210 AUD
Retailer 5$2,232 AUD
Retailer 9$2,728 AUD
Brilliant Earth$3,858 AUD

41 data points across 16 retailers

21 retailers$559 AUD to $3,858 AUD

A
Cheapest Retailer
-
$559 AUD
$393 USD
A
Retailer 2
-
$626 AUD
$440 USD
View
Final sale: no returns
A
Retailer 3
-
$626 AUD
$440 USD
View
A
Retailer 4
-
$695 AUD
$488 USD
View
A
Retailer 5
-
$695 AUD
$488 USD
View
A
Retailer 6
-
$765 AUD
HK$4,200 HKD
View
A
Retailer 7
-
$904 AUD
$635 USD
View
A
Retailer 8
-
$932 AUD
$655 USD
View
B+
Retailer 9
-
$1,024 AUD
$719 USD
View
B+
Retailer 10
-
$1,082 AUD
$760 USD
View
B+
Retailer 11
-
$1,135 AUD
£628 GBP
View
B+
Retailer 12
-
$1,193 AUD
ZAR 13,540 ZAR
View
B+
Retailer 13
-
$1,217 AUD
€814 EUR
View
B
Retailer 14
-
$1,668 AUD
$1,172 USD
View
B
Retailer 15
-
$2,210 AUD
SGD 2,098 SGD
View
B
Retailer 16
-
$2,232 AUD
$1,568 USD
View
B
Retailer 17
-
$2,284 AUD
$1,604 USD
View
B
Retailer 18
-
$2,543 AUD
$1,786 USD
View
B
Retailer 19
-
$2,577 AUD
$1,810 USD
View
B
Retailer 20
-
$2,728 AUD
£1,509 GBP
View
Most Expensive
B
Brilliant Earth
19348775A · Oct 29
$3,858 AUD
$2,710 USD
View
20 more retailers have this diamond
Prices start from $559 AUDSave up to $3,298 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 Round
$559 AUD