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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG665445078

Certificate IGI LG665445078

Diamond specifications and retailer prices

From $301 USD
Save $3,199 USD (91%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $3,500 USD at Brilliant Earth
View at Brilliant Earth

About this 1.57ct lab-grown radiant diamond

This 1.57ct 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 LG665445078 or 665445078. Listed at 27 retailers, with prices from $301 to $3,500 at Brilliant Earth, a $3,199 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

1.57
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665445078
Dimensions8.55 × 5.71 × 3.73 mm
L/W Ratio1.50
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
8.55 mm5.71 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665445078
Side View
Table 62.0%Crown 44.1°Girdle: MediumPavilion 33.3°Culet: NoneDepth 65.3%

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: $3,500 USD|Low: $239 USD|High: $4,270 USD|Avg: $1,237 USD|-18.0%
Brilliant Earth
Retailer 2
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Retailer 25
October 1, 2026
Retailer 21$301 USD
Retailer 3$349 USD
Retailer 5$360 USD
Retailer 7$368 USD
Retailer 19$474 USD
Retailer 6$530 USD
Retailer 10$635 USD
Retailer 8$653 USD
Retailer 4$693 USD
Retailer 22$728 USD
Retailer 12$847 USD
Retailer 14$933 USD
Retailer 25$956 USD
Retailer 23$1,046 USD
Retailer 20$1,324 USD
Retailer 18$1,484 USD
Retailer 17$1,494 USD
Retailer 16$1,511 USD
Retailer 11$1,542 USD
Retailer 9$1,581 USD
Retailer 13$1,670 USD
Retailer 2$1,709 USD
Retailer 24$2,495 USD
Retailer 15$2,670 USD
Brilliant Earth$3,500 USD

41 data points across 25 retailers

27 retailers$301 USD to $3,500 USD

A
Cheapest Retailer
-
$301 USD
A
Retailer 2
-
$349 USD
View
A
Retailer 3
-
$360 USD
View
A
Retailer 4
-
$368 USD
View
A
Retailer 5
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$474 USD
View
A
Retailer 6
-
$530 USD
View
A
Retailer 7
-
$576 USD
HK$4,500 HKD
View
Price last confirmed 27 days ago
A
Retailer 8
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$635 USD
View
A
Retailer 9
-
$653 USD
€622 EUR
View
A
Retailer 10
-
$693 USD
ZAR 11,195 ZAR
View
A
Retailer 11
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$730 USD
£575 GBP
View
A
Retailer 12
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$847 USD
View
A
Retailer 13
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$933 USD
View
A
Retailer 14
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$956 USD
A$1,470 AUD
View
A
Retailer 15
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$1,046 USD
View
B+
Retailer 16
-
$1,324 USD
View
B+
Retailer 17
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$1,484 USD
View
B+
Retailer 18
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$1,494 USD
£1,176 GBP
View
Price last confirmed 22 days ago
B+
Retailer 19
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$1,511 USD
View
B+
Retailer 20
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$1,542 USD
View
B+
Retailer 21
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$1,581 USD
SGD 2,137 SGD
View
B+
Retailer 22
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$1,670 USD
£1,315 GBP
View
B+
Retailer 23
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$1,709 USD
A$2,629 AUD
View
B
Retailer 24
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$2,495 USD
View
B
Retailer 25
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$2,520 USD
View
B
Retailer 26
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$2,670 USD
View
Most Expensive
B
Brilliant Earth
13057158Y · Sep 29
$3,500 USD
View
26 more retailers have this diamond
Prices start from $301 USDSave up to $3,199 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
1.57ct Radiant
$301 USD