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Round|Lab Grown|IGI

3.76ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG621434027

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621434027

Diamond specifications and retailer prices

From $637 USD
As of October 29, 2026
Save $2,584 USD (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,340 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.76ct lab-grown round diamond

This 3.76ct lab-grown round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621434027 or 621434027. Listed at 12 retailers as of October 29, 2026, with a 406% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.76
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621434027
Dimensions9.90 × 9.87 × 6.16 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.90 mm9.87 mm3.76 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621434027
Side View
Table 58.0%Crown 35.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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: Oct 29
Current: $5,340 USD|Low: $612 USD|High: $5,340 USD|Avg: $1,909 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10$637 USD
Retailer 13$693 USD
Retailer 12$1,074 USD
Retailer 11$1,208 USD
Retailer 7$1,210 USD
Retailer 2$1,359 USD
Retailer 5$1,373 USD
Retailer 9$1,888 USD
Retailer 8$2,025 USD
Retailer 4$2,196 USD
Retailer 3$2,294 USD
Retailer 6$3,221 USD
Do Amore Diamonds$5,340 USD

35 data points across 13 retailers

12 retailers$637 USD to $3,221 USD

A
Cheapest Retailer
-
$637 USD
A
Retailer 2
-
$693 USD
View
A
Retailer 3
-
$1,074 USD
View
B+
Retailer 4
-
$1,208 USD
View
B+
Retailer 5
-
$1,210 USD
View
B+
Retailer 6
-
$1,359 USD
£1,070 GBP
View
B
Retailer 7
-
$1,888 USD
View
Retailer 8
-
$2,025 USD
View
Price last confirmed 13 days ago
B
Retailer 9
-
$2,196 USD
View
B
Retailer 10
-
$2,294 USD
View
B
Retailer 11
-
$3,221 USD
£2,536 GBP
View
Most Expensive
Do Amore Diamonds
7-1615573 · Oct 31
$5,340 USD
View
Price under review
11 more retailers have this diamond
Prices start from $637 USDSave up to $2,584 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
3.76ct Round
$637 USD