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Radiant|Lab Grown|IGI

1.51ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG640404265

Certificate IGI LG640404265

Diamond specifications and retailer prices

From $320 USD
Save $2,285 USD (88%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $2,605 USD at Rare Carat
View at Rare Carat

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG640404265 or 640404265. Listed at 27 retailers, with prices from $320 to $2,605 at Rare Carat, a $2,285 spread on the same certified stone. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640404265
Dimensions5.77 × 5.77 × 7.95 mm
L/W Ratio1.00
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
5.77 mm5.77 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640404265
Side View
Table 63.0%Crown 43°Girdle: MediumPavilion 34.2°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $2,605 USD|Low: $255 USD|High: $2,605 USD|Avg: $1,061 USD|+5.9%
Rare Carat
Retailer 2
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Retailer 25
October 1, 2026
Retailer 22$320 USD
Retailer 2$358 USD
Retailer 6$372 USD
Retailer 9$392 USD
Retailer 19$424 USD
Retailer 20$458 USD
Retailer 23$461 USD
Retailer 24$550 USD
Retailer 8$632 USD
Retailer 11$655 USD
Retailer 7$669 USD
Retailer 25$701 USD
Retailer 15$897 USD
Retailer 5$922 USD
Retailer 12$1,017 USD
Retailer 3$1,068 USD
Retailer 21$1,277 USD
Retailer 14$1,298 USD
Retailer 17$1,323 USD
Retailer 10$1,331 USD
Retailer 18$1,509 USD
Retailer 16$1,578 USD
Retailer 13$1,612 USD
Retailer 4$1,623 USD
Rare Carat$2,605 USD

41 data points across 25 retailers

27 retailers$320 USD to $2,605 USD

A
Cheapest Retailer
-
$320 USD
A
Retailer 2
-
$358 USD
View
A
Retailer 3
-
$372 USD
View
A
Retailer 4
-
$392 USD
View
A
Retailer 5
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$424 USD
£334 GBP
View
A
Retailer 6
-
$458 USD
View
A
Retailer 7
-
$461 USD
HK$3,600 HKD
View
A
Retailer 8
-
$550 USD
View
A
Retailer 9
-
$632 USD
€602 EUR
View
A
Retailer 10
-
$655 USD
View
A
Retailer 11
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$669 USD
ZAR 10,804 ZAR
View
A
Retailer 12
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$688 USD
£541 GBP
View
Price last confirmed 21 days ago
A
Retailer 13
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$702 USD
£553 GBP
View
A
Retailer 14
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$897 USD
View
A
Retailer 15
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$922 USD
A$1,419 AUD
View
A
Retailer 16
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$1,017 USD
View
A
Retailer 17
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$1,068 USD
View
B+
Retailer 18
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$1,277 USD
View
B+
Retailer 19
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$1,323 USD
View
B+
Retailer 20
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$1,324 USD
View
B+
Retailer 21
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$1,331 USD
SGD 1,799 SGD
View
B+
Retailer 22
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$1,578 USD
View
B+
Retailer 23
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$1,612 USD
£1,269 GBP
View
B+
Retailer 24
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$1,623 USD
A$2,497 AUD
View
B
Retailer 25
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$2,426 USD
View
B
Retailer 26
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$2,570 USD
View
Price last confirmed 72 days ago
Most Expensive
B
Rare Carat
P3107-68 · Sep 28
$2,605 USD
View
26 more retailers have this diamond
Prices start from $320 USDSave up to $2,285 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.

A
1.51ct Radiant
$320 USD