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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG801686051

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

Certificate IGI LG801686051

Diamond specifications and retailer prices

From $598 AUD
$420 USD
As of November 1, 2026
Save $3,203 AUD (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,801 AUD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG801686051 or 801686051. Listed at 15 retailers as of November 1, 2026, with prices from $598 to $3,801, a $3,203 spread on the same certified stone. Do Amore Diamonds lists it at $3,801. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801686051
Dimensions7.76 × 5.38 × 3.59 mm
L/W Ratio1.44
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
7.76 mm5.38 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801686051
Side View
Table 63.0%Crown 42.5°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 66.7%

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: $3,801 AUD|Low: $598 AUD|High: $4,840 AUD|Avg: $1,861 AUD|-9.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4$598 AUD
Retailer 5$604 AUD
Retailer 8$759 AUD
Retailer 12$783 AUD
Retailer 10$870 AUD
Retailer 3$985 AUD
Retailer 6$996 AUD
Retailer 9$1,633 AUD
Retailer 2$2,350 AUD
Retailer 7$3,388 AUD
Retailer 11$3,523 AUD
Do Amore Diamonds$3,801 AUD

35 data points across 12 retailers

15 retailers$598 AUD to $3,801 AUD

Retailer 1
-
$451 AUD
$317 USD
Price last confirmed 22 days ago
Retailer 2
-
$522 AUD
$367 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$598 AUD
$420 USD
View
Final sale: no returns
A
Retailer 4
-
$604 AUD
£334 GBP
View
A
Retailer 5
-
$759 AUD
$533 USD
View
A
Retailer 6
-
$783 AUD
$550 USD
View
A
Retailer 7
-
$870 AUD
$611 USD
View
A
Retailer 8
-
$985 AUD
$692 USD
View
A
Retailer 9
-
$996 AUD
€666 EUR
View
B+
Retailer 10
-
$1,633 AUD
$1,147 USD
View
Retailer 11
-
$1,984 AUD
$1,394 USD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$2,350 AUD
£1,300 GBP
View
B
Retailer 13
-
$3,388 AUD
$2,380 USD
View
Retailer 14
-
$3,523 AUD
$2,475 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Do Amore Diamonds
27-43D2CC484 · Nov 1
$3,801 AUD
$2,670 USD
View
14 more retailers have this diamond
Prices start from $598 AUDSave up to $3,203 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
1.28ct Radiant
$598 AUD