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Round|Lab Grown|IGI

4.08ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG687595358

Shape and cutting style on the report: Round brilliant

Certificate IGI LG687595358

Diamond specifications and retailer prices

From $942 USD
€897 EUR
As of October 29, 2026
Save $2,618 USD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,560 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.08ct lab-grown round diamond

This 4.08ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG687595358 or 687595358. Listed at 15 retailers as of October 29, 2026, with prices from $942 to $3,560, a $2,618 spread on the same certified stone. Brilliant Earth lists it at $3,560. 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

4.08
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687595358
Dimensions10.30 × 10.27 × 6.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.30 mm10.27 mm4.08 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687595358
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.2%

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: Oct 29
Current: $3,560 USD|Low: $600 USD|High: $3,820 USD|Avg: $1,604 USD|-6.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 4$600 USD
Retailer 3$772 USD
Retailer 5$942 USD
Retailer 9$965 USD
Retailer 12$1,057 USD
Retailer 2$1,064 USD
Retailer 10$1,078 USD
Retailer 11$1,692 USD
Retailer 7$1,767 USD
Retailer 6$2,720 USD
Retailer 8$2,988 USD
Brilliant Earth$3,560 USD

36 data points across 12 retailers

15 retailers$942 USD to $3,560 USD

Retailer 1
-
$484 USD
Price last confirmed 35 days ago
Retailer 2
-
$542 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$592 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$772 USD
£608 GBP
View
Price last confirmed 21 days ago
A
Retailer 5
-
$942 USD
€897 EUR
View
B+
Retailer 6
-
$965 USD
View
B+
Retailer 7
-
$1,057 USD
View
A
Retailer 8
-
$1,064 USD
£838 GBP
View
A
Retailer 9
-
$1,078 USD
View
B+
Retailer 10
-
$1,692 USD
View
B
Retailer 11
-
$1,767 USD
View
Retailer 12
-
$1,928 USD
View
Price last confirmed 33 days ago
Retailer 13
-
$2,720 USD
View
Price last confirmed 9 days ago
Retailer 14
-
$2,988 USD
£2,353 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
13402575A · Oct 30
$3,560 USD
View
14 more retailers have this diamond
Prices start from $942 USDSave up to $2,618 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
4.08ct Round
$942 USD