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Round|Lab Grown|IGI

3.65ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG623496987

Shape and cutting style on the report: Round brilliant

Certificate IGI LG623496987

Diamond specifications and retailer prices

From $635 USD
As of October 29, 2026
Save $2,484 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,119 USD at MOH London · As of October 29, 2026
View at MOH London

About this 3.65ct lab-grown round diamond

This 3.65ct 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 LG623496987 or 623496987. Listed at 16 retailers as of October 29, 2026, with prices from $635 to $3,119, a $2,484 spread on the same certified stone. MOH London lists it at $3,119. 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

3.65
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623496987
Dimensions9.95 × 9.89 × 5.98 mm
L/W Ratio1.01
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
9.95 mm9.89 mm3.65 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623496987
Side View
Table 60.0%Crown 33.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.3%

Caratlytics Score

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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: $3,119 USD|Low: $610 USD|High: $3,139 USD|Avg: $1,379 USD|+0.5%
MOH London
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
November 1, 2026
Retailer 11$635 USD
Retailer 9$691 USD
Retailer 6$711 USD
Retailer 15$736 USD
Retailer 3$737 USD
Retailer 8$915 USD
Retailer 7$1,142 USD
Retailer 2$1,172 USD
Retailer 5$1,204 USD
Retailer 14$1,233 USD
Retailer 10$1,881 USD
Retailer 13$1,930 USD
Retailer 12$2,071 USD
Retailer 4$2,500 USD
MOH London$3,119 USD

44 data points across 15 retailers

16 retailers$635 USD to $3,119 USD

A
Cheapest Retailer
-
$635 USD
A
Retailer 2
-
$691 USD
View
A
Retailer 3
-
$711 USD
View
Final sale: no returns
A
Retailer 4
-
$736 USD
View
Retailer 5
-
$737 USD
View
Price last confirmed 15 days ago
A
Retailer 6
-
$915 USD
View
A
Retailer 7
-
$1,142 USD
View
A
Retailer 8
-
$1,172 USD
£923 GBP
View
B+
Retailer 9
-
$1,204 USD
View
Retailer 10
-
$1,233 USD
£971 GBP
View
Price last confirmed 15 days ago
B
Retailer 11
-
$1,881 USD
View
Retailer 12
-
$1,930 USD
View
Price last confirmed 14 days ago
B
Retailer 13
-
$2,071 USD
View
B
Retailer 14
-
$2,500 USD
View
B
Retailer 15
-
$2,568 USD
View
Most Expensive
B
MOH London
LG623496987 · Oct 29
$3,119 USD
£2,456 GBP
View
15 more retailers have this diamond
Prices start from $635 USDSave up to $2,484 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
3.65ct Round
$635 USD