Radiant|Lab Grown|IGI

1.33ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG689516105

Shape and cutting style on the report: Cut cornered square modified brilliant

Certificate IGI LG689516105

Diamond specifications and retailer prices

From $365 USD
As of October 30, 2026
Save $1,233 USD (77%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,600 USD at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 1.33ct lab-grown radiant diamond

This 1.33ct lab-grown radiant 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 LG689516105 or 689516105. Listed at 14 retailers as of October 30, 2026, with a 338% 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

1.33
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689516105
Dimensions6.56 × 6.23 × 3.88 mm
L/W Ratio1.05
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
6.56 mm6.23 mm1.33 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689516105
Side View
Table 58.0%Crown 37.8°Girdle: MediumPavilion 34.9°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $3,600 USD|Low: $260 USD|High: $3,600 USD|Avg: $1,058 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
October 30, 2026
Retailer 4$365 USD
Retailer 8$376 USD
Retailer 17$405 USD
Retailer 2$418 USD
Retailer 11$545 USD
Retailer 12$545 USD
Retailer 3$655 USD
Retailer 16$659 USD
Retailer 10$696 USD
Retailer 15$969 USD
Retailer 7$1,074 USD
Retailer 5$1,347 USD
Retailer 9$1,524 USD
Retailer 6$1,598 USD
Retailer 14$1,632 USD
Retailer 13$1,880 USD
Brilliant Earth$3,600 USD

31 data points across 17 retailers

14 retailers$365 USD to $1,598 USD

A
Cheapest Retailer
-
$365 USD
Final sale: no returns
A
Retailer 2
-
$405 USD
View
A
Retailer 3
-
$418 USD
£329 GBP
View
A
Retailer 4
-
$545 USD
View
A
Retailer 5
-
$545 USD
View
A
Retailer 6
-
$655 USD
View
A
Retailer 7
-
$696 USD
ZAR 11,247 ZAR
View
B+
Retailer 8
-
$969 USD
View
B
Retailer 9
-
$1,347 USD
View
B
Retailer 10
-
$1,598 USD
View
Retailer 11
-
$1,632 USD
£1,285 GBP
View
Price last confirmed 12 days ago
Retailer 12
-
$1,880 USD
View
Price last confirmed 12 days ago
Retailer 13
-
$1,943 USD
View
Price last confirmed 82 days ago
Most Expensive
Brilliant Earth
21386154A · Oct 8
$3,600 USD
View
Price last confirmed 22 days ago
13 more retailers have this diamond
Prices start from $365 USDSave up to $1,233 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
1.33ct Radiant
$365 USD