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Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG800679326

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800679326

Diamond specifications and retailer prices

From $711 AUD
HK$3,900 HKD
As of October 30, 2026
Save $2,891 AUD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,601 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round 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 LG800679326 or 800679326. Listed at 12 retailers as of October 29, 2026, with prices from $711 to $3,601, a $2,891 spread on the same certified stone. Brilliant Earth lists it at $3,601. 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 angle35.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679326
Dimensions6.88 × 6.94 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.88 mm6.94 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679326
Side View
Table 58.0%Crown 35.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.0%

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: Oct 30
Current: $3,601 AUD|Low: $711 AUD|High: $4,199 AUD|Avg: $1,753 AUD|-14.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 11$711 AUD
Retailer 12$868 AUD
Retailer 6$1,000 AUD
Retailer 2$1,101 AUD
Retailer 7$1,127 AUD
Retailer 8$1,161 AUD
Retailer 9$1,403 AUD
Retailer 3$2,034 AUD
Retailer 4$2,292 AUD
Retailer 10$2,353 AUD
Retailer 5$2,411 AUD
Brilliant Earth$3,601 AUD

42 data points across 12 retailers

12 retailers$711 AUD to $3,601 AUD

A
Cheapest Retailer
-
$711 AUD
HK$3,900 HKD
A
Retailer 2
-
$868 AUD
$610 USD
View
A
Retailer 3
-
$1,000 AUD
€669 EUR
View
A
Retailer 4
-
$1,101 AUD
£609 GBP
View
A
Retailer 5
-
$1,127 AUD
View
A
Retailer 6
-
$1,161 AUD
$816 USD
View
B+
Retailer 7
-
$1,403 AUD
$986 USD
View
B+
Retailer 8
-
$2,034 AUD
$1,429 USD
View
Retailer 9
-
$2,292 AUD
$1,610 USD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
$2,353 AUD
$1,653 USD
View
B+
Retailer 11
-
$2,411 AUD
£1,334 GBP
View
Most Expensive
B
Brilliant Earth
20788373A · Oct 29
$3,601 AUD
$2,530 USD
View
11 more retailers have this diamond
Prices start from $711 AUDSave up to $2,891 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 Round
$711 AUD