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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG729589868

Certificate IGI LG729589868

Diamond specifications and retailer prices

From $320 USD
Save $3,180 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 LG729589868 or 729589868. Listed at 27 retailers, with prices from $320 to $3,500 at Brilliant Earth, a $3,180 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 angle39°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729589868
Dimensions8.70 × 5.86 × 3.63 mm
L/W Ratio1.48
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
8.70 mm5.86 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729589868
Side View
Table 62.0%Crown 39°Girdle: MED-STKPavilion 33.3°Culet: NoneDepth 61.9%

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: $254 USD|High: $3,500 USD|Avg: $1,237 USD
Brilliant Earth
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October 1, 2026
Retailer 20$320 USD
Retailer 4$371 USD
Retailer 6$387 USD
Retailer 8$392 USD
Retailer 13$506 USD
Retailer 21$570 USD
Retailer 18$614 USD
Retailer 10$657 USD
Retailer 7$695 USD
Retailer 5$737 USD
Retailer 22$778 USD
Retailer 12$851 USD
Retailer 15$1,002 USD
Retailer 3$1,017 USD
Retailer 23$1,066 USD
Retailer 19$1,408 USD
Retailer 14$1,566 USD
Retailer 17$1,571 USD
Retailer 11$1,639 USD
Retailer 9$1,675 USD
Retailer 2$1,730 USD
Retailer 24$1,731 USD
Retailer 25$2,505 USD
Retailer 16$2,840 USD
Brilliant Earth$3,500 USD

39 data points across 25 retailers

27 retailers$320 USD to $3,500 USD

A
Cheapest Retailer
-
$320 USD
A
Retailer 2
-
$371 USD
View
A
Retailer 3
-
$387 USD
View
A
Retailer 4
-
$392 USD
View
A
Retailer 5
-
$506 USD
View
A
Retailer 6
-
$570 USD
View
A
Retailer 7
-
$614 USD
HK$4,800 HKD
View
Price last confirmed 27 days ago
A
Retailer 8
-
$657 USD
View
A
Retailer 9
-
$695 USD
€662 EUR
View
A
Retailer 10
-
$737 USD
ZAR 11,904 ZAR
View
A
Retailer 11
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$764 USD
£601 GBP
View
Price last confirmed 21 days ago
A
Retailer 12
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$780 USD
£614 GBP
View
A
Retailer 13
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$851 USD
View
A
Retailer 14
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$1,002 USD
View
A
Retailer 15
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$1,017 USD
A$1,564 AUD
View
A
Retailer 16
-
$1,066 USD
View
B+
Retailer 17
-
$1,408 USD
View
B+
Retailer 18
-
$1,566 USD
View
B+
Retailer 19
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$1,571 USD
View
B+
Retailer 20
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$1,639 USD
View
B+
Retailer 21
-
$1,675 USD
SGD 2,263 SGD
View
B+
Retailer 22
-
$1,730 USD
A$2,662 AUD
View
B+
Retailer 23
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$1,731 USD
£1,363 GBP
View
B
Retailer 24
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$2,480 USD
View
Price last confirmed 72 days ago
B
Retailer 25
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$2,505 USD
View
B
Retailer 26
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$2,840 USD
View
Most Expensive
B
Brilliant Earth
16223276Y · Oct 1
$3,500 USD
View
26 more retailers have this diamond
Prices start from $320 USDSave up to $3,180 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
$320 USD