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Oval|Lab Grown|IGI

4.08ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG687560783

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG687560783

Diamond specifications and retailer prices

From $730 USD
As of October 29, 2026
Save $2,920 USD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,650 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.08ct lab-grown oval diamond

This 4.08ct lab-grown oval 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 LG687560783 or 687560783. Listed at 14 retailers as of October 29, 2026, with prices from $730 to $3,650, a $2,920 spread on the same certified stone. Brilliant Earth lists it at $3,650. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687560783
Dimensions13.01 × 9.06 × 5.65 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.01 mm9.06 mm4.08 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687560783
Side View
Table 58.0%Crown 34.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.4%

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: $3,650 USD|Low: $589 USD|High: $3,760 USD|Avg: $1,674 USD|-2.9%
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 9$589 USD
Retailer 12$630 USD
Retailer 10$730 USD
Retailer 11$979 USD
Retailer 3$1,030 USD
Retailer 8$1,046 USD
Retailer 2$1,048 USD
Retailer 6$1,627 USD
Retailer 4$2,107 USD
Retailer 5$2,635 USD
Retailer 7$2,960 USD
Brilliant Earth$3,650 USD

33 data points across 12 retailers

14 retailers$730 USD to $3,650 USD

Retailer 1
-
$508 USD
Price last confirmed 37 days ago
Retailer 2
-
$569 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$589 USD
£464 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
$622 USD
View
Price last confirmed 33 days ago
A
Retailer 5
-
$730 USD
View
B+
Retailer 6
-
$979 USD
View
A
Retailer 7
-
$1,030 USD
View
A
Retailer 8
-
$1,048 USD
£825 GBP
View
B
Retailer 9
-
$1,627 USD
View
Retailer 10
-
$1,658 USD
View
Price last confirmed 32 days ago
B
Retailer 11
-
$2,107 USD
View
B
Retailer 12
-
$2,635 USD
£2,075 GBP
View
Retailer 13
-
$2,960 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
13533341A · Oct 29
$3,650 USD
View
13 more retailers have this diamond
Prices start from $730 USDSave up to $2,920 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 Oval
$730 USD