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Round|Lab Grown|IGI

3.75ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG577378618

Shape and cutting style on the report: Round brilliant

Certificate IGI LG577378618

Diamond specifications and retailer prices

From $1,205 USD
As of November 3, 2026
Save $9,495 USD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $18,490 USD at Mervis Diamond Importers · As of November 4, 2026
View at Mervis Diamond Importers

About this 3.75ct lab-grown round diamond

This 3.75ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG577378618 or 577378618. Listed at 22 retailers as of November 3, 2026, with a 788% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577378618
Dimensions9.90 × 9.91 × 6.16 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
9.90 mm9.91 mm3.75 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577378618
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Nov 3
Current: $18,490 USD|Low: $1,157 USD|High: $18,490 USD|Avg: $3,363 USD|+133.3%
Mervis Diamond Importers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 5, 2026
Retailer 15$1,205 USD
Retailer 7$1,311 USD
Retailer 5$1,349 USD
Retailer 16$1,397 USD
Retailer 14$1,570 USD
Retailer 6$1,749 USD
Retailer 10$2,145 USD
Retailer 3$2,217 USD
Retailer 8$2,891 USD
Retailer 12$3,483 USD
Retailer 11$3,585 USD
Retailer 17$4,010 USD
Retailer 9$4,343 USD
Retailer 4$4,480 USD
Retailer 2$4,942 USD
Retailer 13$7,920 USD
Mervis Diamond Importers$18,490 USD

43 data points across 17 retailers

22 retailers$1,205 USD to $10,700 USD

A
Cheapest Retailer
-
$1,205 USD
A
Retailer 2
-
$1,311 USD
View
A
Retailer 3
-
$1,349 USD
View
Final sale: no returns
Retailer 4
-
$1,397 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$1,397 USD
View
A
Retailer 6
-
$1,570 USD
View
A
Retailer 7
-
$1,749 USD
View
A
Retailer 8
-
$2,145 USD
View
A
Retailer 9
-
$2,217 USD
View
B+
Retailer 10
-
$2,360 USD
View
B+
Retailer 11
-
$2,677 USD
View
B+
Retailer 12
-
$2,891 USD
View
B+
Retailer 13
-
$3,483 USD
View
B+
Retailer 14
-
$3,585 USD
View
B+
Retailer 15
-
$4,010 USD
View
B+
Retailer 16
-
$4,343 USD
View
B
Retailer 17
-
$4,480 USD
View
B+
Retailer 18
-
$4,942 USD
View
B
Retailer 19
-
$5,470 USD
View
B
Retailer 20
-
$7,920 USD
View
B
Retailer 21
-
$10,700 USD
View
Most Expensive
Mervis Diamond Importers
1985409083 · Nov 4
$18,490 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,205 USDSave up to $9,495 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.75ct Round
$1,205 USD