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Radiant|Lab Grown|IGI

3.09ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG737578630

Certificate IGI LG737578630

Diamond specifications and retailer prices

From $1,462 USD
Save $10,808 USD (88%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $12,270 USD at Brilliant Earth
View at Brilliant Earth

About this 3.09ct lab-grown radiant diamond

This 3.09ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG737578630 or 737578630. Listed at 27 retailers, with prices from $1,462 to $12,270 at Brilliant Earth, a $10,808 spread on the same certified stone. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.09
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737578630
Dimensions10.22 × 7.31 × 4.95 mm
L/W Ratio1.40
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
10.22 mm7.31 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737578630
Side View
Table 64.0%Crown 40.6°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.7%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $12,270 USD|Low: $1,168 USD|High: $12,280 USD|Avg: $4,366 USD|-0.1%
Brilliant Earth
Retailer 2
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Retailer 26
October 1, 2026
Retailer 24$1,462 USD
Retailer 4$1,590 USD
Retailer 7$1,672 USD
Retailer 25$1,865 USD
Retailer 26$1,878 USD
Retailer 9$1,912 USD
Retailer 17$2,058 USD
Retailer 23$2,074 USD
Retailer 20$2,457 USD
Retailer 6$2,669 USD
Retailer 21$3,078 USD
Retailer 12$3,095 USD
Retailer 22$3,178 USD
Retailer 10$3,846 USD
Retailer 14$4,100 USD
Retailer 15$4,419 USD
Retailer 2$4,901 USD
Retailer 11$4,939 USD
Retailer 18$5,220 USD
Retailer 3$5,885 USD
Retailer 19$5,970 USD
Retailer 8$5,984 USD
Retailer 16$6,395 USD
Retailer 13$6,871 USD
Retailer 5$10,727 USD
Brilliant Earth$12,270 USD

42 data points across 26 retailers

27 retailers$1,462 USD to $12,270 USD

A
Cheapest Retailer
-
$1,462 USD
A
Retailer 2
-
$1,590 USD
View
A
Retailer 3
-
$1,672 USD
View
A
Retailer 4
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$1,865 USD
View
A
Retailer 5
-
$1,878 USD
View
A
Retailer 6
-
$1,912 USD
View
A
Retailer 7
-
$2,058 USD
View
A
Retailer 8
-
$2,074 USD
HK$16,200 HKD
View
A
Retailer 9
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$2,406 USD
£1,894 GBP
View
Price last confirmed 21 days ago
A
Retailer 10
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$2,457 USD
£1,934 GBP
View
A
Retailer 11
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$2,669 USD
€2,542 EUR
View
A
Retailer 12
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$3,078 USD
View
A
Retailer 13
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$3,095 USD
View
A
Retailer 14
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$3,178 USD
View
A
Retailer 15
-
$3,846 USD
ZAR 62,127 ZAR
View
Price last confirmed 9 days ago
B+
Retailer 16
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$4,100 USD
£3,228 GBP
View
B+
Retailer 17
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$4,419 USD
View
B+
Retailer 18
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$4,901 USD
£3,859 GBP
View
B+
Retailer 19
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$4,939 USD
View
B+
Retailer 20
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$5,220 USD
View
B+
Retailer 21
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$5,885 USD
View
B+
Retailer 22
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$5,970 USD
View
B+
Retailer 23
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$5,984 USD
SGD 8,087 SGD
View
B+
Retailer 24
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$6,526 USD
View
B+
Retailer 25
-
$6,871 USD
A$10,571 AUD
View
B
Retailer 26
-
$10,727 USD
View
Most Expensive
B
Brilliant Earth
16121807A · Sep 29
$12,270 USD
View
26 more retailers have this diamond
Prices start from $1,462 USDSave up to $10,808 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
3.09ct Radiant
$1,462 USD