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Oval|Lab Grown|IGI

3.42ct D FL Oval Lab Grown Diamond

EX • D/FL • IGI LG800662991

Certificate IGI LG800662991

Diamond specifications and retailer prices

From $2,558 USD
Save $15,532 USD (86%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $18,090 USD at Brilliant Earth
View at Brilliant Earth

About this 3.42ct lab-grown oval diamond

This 3.42ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800662991 or 800662991. Listed at 28 retailers, with prices from $2,558 to $18,090 at Brilliant Earth, a $15,532 spread on the same certified stone. 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

3.42
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800662991
Dimensions12.16 × 8.51 × 5.25 mm
L/W Ratio1.43
Girdle conditionFaceted
Cert comments
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
12.16 mm8.51 mm3.42 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800662991
Side View
Table 62.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.7%

Caratlytics Score

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

Price History

Last verified: Sep 29
Current: $18,090 USD|Low: $2,069 USD|High: $20,400 USD|Avg: $7,209 USD|-11.3%
Brilliant Earth
Retailer 2
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Retailer 23
September 29, 2026
Retailer 15$2,069 USD
Retailer 7$2,914 USD
Retailer 18$2,967 USD
Retailer 8$3,130 USD
Retailer 21$3,232 USD
Retailer 19$3,279 USD
Retailer 4$4,039 USD
Retailer 2$4,095 USD
Retailer 6$4,240 USD
Retailer 12$4,375 USD
Retailer 20$4,389 USD
Retailer 5$4,828 USD
Retailer 23$5,624 USD
Retailer 13$6,765 USD
Retailer 3$7,374 USD
Retailer 17$8,040 USD
Retailer 22$8,561 USD
Retailer 11$8,718 USD
Retailer 14$10,351 USD
Retailer 10$12,866 USD
Retailer 9$14,229 USD
Retailer 16$16,389 USD
Brilliant Earth$18,090 USD

36 data points across 23 retailers

28 retailers$2,558 USD to $18,090 USD

A
Cheapest Retailer
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$2,558 USD
A
Retailer 2
-
$2,783 USD
View
A
Retailer 3
-
$2,888 USD
View
Price last confirmed 19 days ago
A
Retailer 4
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$2,914 USD
View
A
Retailer 5
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$2,926 USD
View
A
Retailer 6
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$2,967 USD
View
A
Retailer 7
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$3,130 USD
View
A
Retailer 8
-
$3,232 USD
View
A
Retailer 9
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$3,279 USD
View
B+
Retailer 10
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$4,039 USD
View
B+
Retailer 11
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$4,079 USD
View
B+
Retailer 12
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$4,101 USD
£3,229 GBP
View
B+
Retailer 13
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$4,240 USD
View
B+
Retailer 14
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$4,375 USD
CA$6,076 CAD
View
B+
Retailer 15
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$4,389 USD
€4,180 EUR
View
B+
Retailer 16
-
$4,828 USD
A$7,428 AUD
View
B+
Retailer 17
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$5,624 USD
£4,428 GBP
View
B
Retailer 18
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$6,765 USD
ZAR 109,290 ZAR
View
B
Retailer 19
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$7,374 USD
View
B
Retailer 20
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$7,478 USD
View
B
Retailer 21
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$8,040 USD
£6,331 GBP
View
B
Retailer 22
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$8,561 USD
View
Price last confirmed 8 days ago
B
Retailer 23
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$8,718 USD
View
B
Retailer 24
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$10,351 USD
View
B
Retailer 25
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$12,866 USD
View
B
Retailer 26
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$14,519 USD
View
B
Retailer 27
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$16,389 USD
View
Most Expensive
B
Brilliant Earth
20481375A · Sep 29
$18,090 USD
View
27 more retailers have this diamond
Prices start from $2,558 USDSave up to $15,532 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.

A
3.42ct Oval
$2,558 USD