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 $472 USD
As of November 3, 2026
Save $1,691 USD (78%) vs most expensive(unlock to see where)
23 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 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $2,560 USD|Low: $453 USD|High: $2,560 USD|Avg: $1,153 USD
Brilliant Earth
Retailer 2
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Retailer 20
November 2, 2026
Retailer 4$472 USD
Retailer 12$528 USD
Retailer 10$529 USD
Retailer 8$586 USD
Retailer 18$725 USD
Retailer 16$889 USD
Retailer 5$903 USD
Retailer 19$915 USD
Retailer 2$929 USD
Retailer 3$945 USD
Retailer 13$1,010 USD
Retailer 6$1,308 USD
Retailer 14$1,427 USD
Retailer 7$1,475 USD
Retailer 17$1,575 USD
Retailer 9$1,855 USD
Retailer 11$1,883 USD
Retailer 20$1,911 USD
Retailer 15$2,163 USD
Brilliant Earth$2,560 USD

39 data points across 20 retailers

23 retailers$472 USD to $2,163 USD

A
Cheapest Retailer
-
$472 USD
A
Retailer 2
-
$528 USD
View
Final sale: no returns
A
Retailer 3
-
$529 USD
View
Retailer 4
-
$586 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
$586 USD
View
A
Retailer 6
-
$725 USD
View
B+
Retailer 7
-
$828 USD
View
B+
Retailer 8
-
$889 USD
A$1,368 AUD
View
B+
Retailer 9
-
$915 USD
View
B+
Retailer 10
-
$929 USD
£731 GBP
View
Retailer 11
-
$945 USD
£744 GBP
View
Price last confirmed 20 days ago
B+
Retailer 12
-
$1,010 USD
ZAR 16,319 ZAR
View
Retailer 13
-
$1,308 USD
A$2,013 AUD
View
Price last confirmed 26 days ago
Retailer 14
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$1,359 USD
View
Price last confirmed 18 days ago
B
Retailer 15
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$1,427 USD
A$2,196 AUD
View
Retailer 16
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$1,475 USD
View
Price last confirmed 27 days ago
B
Retailer 17
-
$1,575 USD
View
Retailer 18
-
$1,855 USD
SGD 2,507 SGD
View
Price last confirmed 21 days ago
B
Retailer 19
-
$1,883 USD
View
B
Retailer 20
-
$1,911 USD
View
Retailer 21
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$1,912 USD
View
Price last confirmed 21 days ago
B
Retailer 22
-
$2,163 USD
£1,703 GBP
View
Most Expensive
Brilliant Earth
21124084A · Oct 14
$2,560 USD
View
Price last confirmed 20 days ago
22 more retailers have this diamond
Prices start from $472 USDSave up to $1,691 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
$472 USD