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Radiant|Lab Grown|IGI

1.00ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG720540640

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

Certificate IGI LG720540640

Diamond specifications and retailer prices

From $239 USD
As of October 30, 2026
Save $1,730 USD (88%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,360 USD at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG720540640 or 720540640. Listed at 23 retailers as of October 27, 2026, with a 724% 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

1.00
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.9°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG720540640
Dimensions7.07 × 4.87 × 3.40 mm
L/W Ratio1.45
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
7.07 mm4.87 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG720540640
Side View
Table 65.0%Crown 39.9°Girdle: STK-THKPavilion 35.8°Culet: NoneDepth 69.8%

Caratlytics Score

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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: Oct 30
Current: $2,360 USD|Low: $230 USD|High: $2,430 USD|Avg: $668 USD|-2.9%
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
November 1, 2026
Retailer 14$239 USD
Retailer 9$267 USD
Retailer 5$278 USD
Retailer 3$297 USD
Retailer 6$297 USD
Retailer 10$307 USD
Retailer 15$400 USD
Retailer 12$510 USD
Retailer 7$527 USD
Retailer 8$534 USD
Retailer 2$557 USD
Retailer 13$784 USD
Retailer 4$954 USD
Retailer 11$1,196 USD
Brilliant Earth$2,360 USD

43 data points across 15 retailers

23 retailers$239 USD to $1,969 USD

A
Cheapest Retailer
-
$239 USD
A
Retailer 2
-
$267 USD
View
Final sale: no returns
A
Retailer 3
-
$278 USD
View
A
Retailer 4
-
$297 USD
View
A
Retailer 5
-
$297 USD
View
A
Retailer 6
-
$307 USD
£241 GBP
View
A
Retailer 7
-
$333 USD
HK$2,600 HKD
View
A
Retailer 8
-
$400 USD
View
A
Retailer 9
-
$510 USD
ZAR 8,239 ZAR
View
A
Retailer 10
-
$527 USD
View
A
Retailer 11
-
$534 USD
€509 EUR
View
A
Retailer 12
-
$554 USD
View
A
Retailer 13
-
$557 USD
£439 GBP
View
B+
Retailer 14
-
$784 USD
View
B+
Retailer 15
-
$799 USD
SGD 1,080 SGD
View
B+
Retailer 16
-
$954 USD
View
B
Retailer 17
-
$1,006 USD
View
B
Retailer 18
-
$1,033 USD
View
B
Retailer 19
-
$1,158 USD
£912 GBP
View
B+
Retailer 20
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$1,196 USD
£942 GBP
View
B
Retailer 21
-
$1,319 USD
View
B
Retailer 22
-
$1,969 USD
£1,550 GBP
View
Most Expensive
Brilliant Earth
16383432A · Oct 16
$2,360 USD
View
Price last confirmed 15 days ago
22 more retailers have this diamond
Prices start from $239 USDSave up to $1,730 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
1.00ct Radiant
$239 USD