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Round|Lab Grown|IGI

1.25ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG811647341

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647341

Diamond specifications and retailer prices

From $673 AUD
$472 USD
As of November 1, 2026
Save $2,413 AUD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,653 AUD at Brilliant Earth · As of October 14, 2026
View at Brilliant Earth

About this 1.25ct lab-grown round diamond

This 1.25ct lab-grown round 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 LG811647341 or 811647341. Listed at 23 retailers as of October 29, 2026, with a 358% 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

1.25
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647341
Dimensions6.85 × 6.90 × 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
6.85 mm6.90 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647341
Side View
Table 59.0%Crown 35.6°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.5%

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 1
Current: $3,653 AUD|Low: $646 AUD|High: $3,653 AUD|Avg: $1,645 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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 4$673 AUD
Retailer 12$753 AUD
Retailer 10$755 AUD
Retailer 8$836 AUD
Retailer 18$1,035 AUD
Retailer 16$1,269 AUD
Retailer 5$1,288 AUD
Retailer 19$1,306 AUD
Retailer 2$1,326 AUD
Retailer 3$1,348 AUD
Retailer 13$1,441 AUD
Retailer 6$1,867 AUD
Retailer 14$2,037 AUD
Retailer 7$2,105 AUD
Retailer 17$2,247 AUD
Retailer 9$2,647 AUD
Retailer 11$2,687 AUD
Retailer 20$2,727 AUD
Retailer 15$3,086 AUD
Brilliant Earth$3,653 AUD

39 data points across 20 retailers

23 retailers$673 AUD to $3,086 AUD

A
Cheapest Retailer
-
$673 AUD
$472 USD
A
Retailer 2
-
$753 AUD
$528 USD
View
Final sale: no returns
A
Retailer 3
-
$755 AUD
$529 USD
View
Retailer 4
-
$836 AUD
$586 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
$836 AUD
$586 USD
View
A
Retailer 6
-
$1,035 AUD
$725 USD
View
B+
Retailer 7
-
$1,181 AUD
$828 USD
View
B+
Retailer 8
-
$1,269 AUD
View
B+
Retailer 9
-
$1,306 AUD
$915 USD
View
B+
Retailer 10
-
$1,326 AUD
£731 GBP
View
Retailer 11
-
$1,348 AUD
£744 GBP
View
Price last confirmed 20 days ago
B+
Retailer 12
-
$1,441 AUD
ZAR 16,319 ZAR
View
Retailer 13
-
$1,867 AUD
View
Price last confirmed 26 days ago
Retailer 14
-
$1,939 AUD
$1,359 USD
View
Price last confirmed 18 days ago
B
Retailer 15
-
$2,037 AUD
View
Retailer 16
-
$2,105 AUD
$1,475 USD
View
Price last confirmed 27 days ago
B
Retailer 17
-
$2,247 AUD
$1,575 USD
View
Retailer 18
-
$2,647 AUD
SGD 2,507 SGD
View
Price last confirmed 21 days ago
B
Retailer 19
-
$2,687 AUD
$1,883 USD
View
B
Retailer 20
-
$2,727 AUD
$1,911 USD
View
Retailer 21
-
$2,729 AUD
$1,912 USD
View
Price last confirmed 21 days ago
B
Retailer 22
-
$3,086 AUD
£1,703 GBP
View
Most Expensive
Brilliant Earth
21124084A · Oct 14
$3,653 AUD
$2,560 USD
View
Price last confirmed 19 days ago
22 more retailers have this diamond
Prices start from $673 AUDSave up to $2,413 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
1.25ct Round
$673 AUD