Round|Lab Grown|IGI

1.25ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG811647377

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811647377

Diamond specifications and retailer prices

From $467 USD
As of November 3, 2026
Save $1,652 USD (78%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,560 USD 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 LG811647377 or 811647377. Listed at 22 retailers as of November 3, 2026, with a 354% 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
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811647377
Dimensions6.98 × 6.95 × 4.20 mm
L/W Ratio1.00
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
6.98 mm6.95 mm1.25 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811647377
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.3%

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 3
Current: $2,560 USD|Low: $448 USD|High: $2,560 USD|Avg: $1,200 USD
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 5, 2026
Retailer 4$467 USD
Retailer 12$522 USD
Retailer 10$523 USD
Retailer 8$579 USD
Retailer 19$720 USD
Retailer 17$889 USD
Retailer 5$903 USD
Retailer 20$904 USD
Retailer 14$916 USD
Retailer 13$947 USD
Retailer 15$998 USD
Retailer 6$1,301 USD
Retailer 16$1,410 USD
Retailer 7$1,470 USD
Retailer 18$1,556 USD
Retailer 9$1,837 USD
Retailer 11$1,860 USD
Retailer 3$1,894 USD
Retailer 2$2,119 USD
Brilliant Earth$2,560 USD

41 data points across 20 retailers

22 retailers$467 USD to $2,119 USD

A
Cheapest Retailer
-
$467 USD
A
Retailer 2
-
$522 USD
View
Final sale: no returns
A
Retailer 3
-
$523 USD
View
A
Retailer 4
-
$579 USD
View
Retailer 5
-
$579 USD
View
Price last confirmed 24 days ago
A
Retailer 6
-
$720 USD
View
B+
Retailer 7
-
$826 USD
View
B+
Retailer 8
-
$889 USD
View
B+
Retailer 9
-
$904 USD
View
B+
Retailer 10
-
$916 USD
View
B+
Retailer 11
-
$947 USD
View
B+
Retailer 12
-
$998 USD
View
Retailer 13
-
$1,301 USD
View
Price last confirmed 28 days ago
B
Retailer 14
-
$1,410 USD
View
Retailer 15
-
$1,470 USD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$1,556 USD
View
Retailer 17
-
$1,837 USD
View
Price last confirmed 23 days ago
B
Retailer 18
-
$1,860 USD
View
Retailer 19
-
$1,890 USD
View
Price last confirmed 24 days ago
B
Retailer 20
-
$1,894 USD
View
B
Retailer 21
-
$2,119 USD
View
Most Expensive
Brilliant Earth
21369880A · Oct 14
$2,560 USD
View
Price last confirmed 21 days ago
21 more retailers have this diamond
Prices start from $467 USDSave up to $1,652 USD

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
$467 USD