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Round|Lab Grown|IGI

1.25ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG781641923

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781641923

Diamond specifications and retailer prices

From $519 AUD
$364 USD
As of November 1, 2026
Save $2,833 AUD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,353 AUD at Queensmith · As of October 27, 2026
View at Queensmith

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 LG781641923 or 781641923. Listed at 21 retailers as of October 27, 2026, with prices from $519 to $3,353, a $2,833 spread on the same certified stone. Queensmith lists it at $3,353. 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 angle35.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781641923
Dimensions6.88 × 6.84 × 4.27 mm
L/W Ratio1.01
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
6.88 mm6.84 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781641923
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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: $1,020 AUD|Low: $519 AUD|High: $2,372 AUD|Avg: $1,323 AUD|+1.4%
Retailer 1
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
November 3, 2026
Retailer 3$519 AUD
Retailer 15$778 AUD
Retailer 13$799 AUD
Retailer 9$915 AUD
Retailer 8$938 AUD
Retailer 10$995 AUD
Retailer 1$1,020 AUD
Retailer 6$1,109 AUD
Retailer 14$1,401 AUD
Retailer 2$1,692 AUD
Retailer 5$1,714 AUD
Retailer 7$1,919 AUD
Retailer 12$1,991 AUD
Retailer 4$2,278 AUD
Retailer 11$2,312 AUD

39 data points across 15 retailers

21 retailers$519 AUD to $3,353 AUD

Retailer 1
-
$465 AUD
$326 USD
Price last confirmed 23 days ago
A
Retailer 2
-
$519 AUD
$364 USD
View
Final sale: no returns
Retailer 3
-
$539 AUD
$378 USD
View
Price last confirmed 20 days ago
Retailer 4
-
$576 AUD
$404 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$576 AUD
$404 USD
View
Price last confirmed 31 days ago
A
Retailer 6
-
$778 AUD
$545 USD
View
A
Retailer 7
-
$799 AUD
$560 USD
View
A
Retailer 8
-
$915 AUD
£505 GBP
View
A
Retailer 9
-
$938 AUD
€626 EUR
View
A
Retailer 10
-
$995 AUD
ZAR 11,266 ZAR
View
A
Retailer 11
-
$1,020 AUD
£563 GBP
View
A
Retailer 12
-
$1,109 AUD
$777 USD
View
B+
Retailer 13
-
$1,401 AUD
View
B+
Retailer 14
-
$1,692 AUD
$1,186 USD
View
Retailer 15
-
$1,714 AUD
View
Price last confirmed 28 days ago
Retailer 16
-
$1,855 AUD
$1,300 USD
View
Price last confirmed 33 days ago
B+
Retailer 17
-
$1,919 AUD
$1,345 USD
View
B
Retailer 18
-
$1,991 AUD
$1,395 USD
View
B
Retailer 19
-
$2,278 AUD
$1,596 USD
View
B+
Retailer 20
-
$2,312 AUD
£1,276 GBP
View
Most Expensive
B
Queensmith
LG781641923 · Oct 27
$3,353 AUD
£1,850 GBP
View
20 more retailers have this diamond
Prices start from $519 AUDSave up to $2,833 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
$519 AUD