Radiant|Lab Grown|IGI

3.75ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG685560554

Certificate IGI LG685560554

Diamond specifications and retailer prices

From $3,279 USD
Save $13,591 USD (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $16,870 USD at Brilliant Earth
View at Brilliant Earth

About this 3.75ct lab-grown radiant diamond

This 3.75ct 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 LG685560554 or 685560554. Listed at 23 retailers, with prices from $3,279 to $16,870 at Brilliant Earth, a $13,591 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

3.75
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685560554
Dimensions11.70 × 7.78 × 4.95 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
11.70 mm7.78 mm3.75 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685560554
Side View
Table 63.0%Crown 36.9°Girdle: THN-MEDPavilion 34.1°Culet: NoneDepth 63.6%

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: Oct 1
Current: $16,870 USD|Low: $2,341 USD|High: $16,920 USD|Avg: $7,331 USD|-0.3%
Brilliant Earth
Retailer 2
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Retailer 21
October 1, 2026
Retailer 4$3,279 USD
Retailer 21$3,409 USD
Retailer 6$3,555 USD
Retailer 14$3,942 USD
Retailer 15$4,687 USD
Retailer 9$4,689 USD
Retailer 11$5,092 USD
Retailer 19$5,278 USD
Retailer 13$5,279 USD
Retailer 5$5,852 USD
Retailer 17$7,682 USD
Retailer 16$7,744 USD
Retailer 8$7,912 USD
Retailer 18$8,712 USD
Retailer 3$8,827 USD
Retailer 2$9,545 USD
Retailer 10$9,899 USD
Retailer 20$11,400 USD
Retailer 12$11,831 USD
Retailer 7$12,236 USD
Brilliant Earth$16,870 USD

38 data points across 21 retailers

23 retailers$3,279 USD to $16,870 USD

A
Cheapest Retailer
-
$3,279 USD
A
Retailer 2
-
$3,409 USD
View
A
Retailer 3
-
$3,555 USD
View
A
Retailer 4
-
$3,942 USD
HK$30,800 HKD
View
A
Retailer 5
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$4,656 USD
£3,666 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
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$4,689 USD
View
A
Retailer 7
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$4,697 USD
£3,699 GBP
View
A
Retailer 8
-
$5,092 USD
View
B+
Retailer 9
-
$5,278 USD
€5,027 EUR
View
B+
Retailer 10
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$5,279 USD
View
B+
Retailer 11
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$5,852 USD
£4,608 GBP
View
B+
Retailer 12
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$7,682 USD
A$11,818 AUD
View
B+
Retailer 13
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$7,744 USD
ZAR 125,104 ZAR
View
B+
Retailer 14
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$7,912 USD
£6,230 GBP
View
B+
Retailer 15
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$8,712 USD
£6,860 GBP
View
B
Retailer 16
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$8,827 USD
View
B
Retailer 17
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$9,180 USD
View
B
Retailer 18
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$9,545 USD
A$14,685 AUD
View
B
Retailer 19
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$9,899 USD
View
B
Retailer 20
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$11,400 USD
SGD 15,405 SGD
View
B
Retailer 21
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$11,831 USD
View
B
Retailer 22
-
$12,486 USD
View
Most Expensive
B
Brilliant Earth
14268052A · Oct 1
$16,870 USD
View
22 more retailers have this diamond
Prices start from $3,279 USDSave up to $13,591 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
3.75ct Radiant
$3,279 USD