Oval|Lab Grown|IGI

4.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG712506113

Certificate IGI LG712506113

Diamond specifications and retailer prices

From $3,063 USD
Save $18,237 USD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,300 USD at Brilliant Earth
View at Brilliant Earth

About this 4.21ct lab-grown oval diamond

This 4.21ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG712506113 or 712506113. Listed at 21 retailers, with prices from $3,063 to $21,300 at Brilliant Earth, a $18,237 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

4.21
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG712506113
Dimensions12.99 × 9.18 × 5.74 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
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
12.99 mm9.18 mm4.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG712506113
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

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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: Oct 1
Current: $21,300 USD|Low: $2,187 USD|High: $21,300 USD|Avg: $7,814 USD
Brilliant Earth
Retailer 2
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Retailer 20
September 29, 2026
Retailer 18$3,063 USD
Retailer 17$3,228 USD
Retailer 3$3,335 USD
Retailer 10$4,134 USD
Retailer 7$4,309 USD
Retailer 20$4,706 USD
Retailer 2$4,834 USD
Retailer 11$4,863 USD
Retailer 19$6,035 USD
Retailer 4$6,793 USD
Retailer 13$7,320 USD
Retailer 14$7,512 USD
Retailer 8$8,741 USD
Retailer 15$8,985 USD
Retailer 5$9,132 USD
Retailer 6$9,512 USD
Retailer 16$11,964 USD
Retailer 12$12,196 USD
Retailer 9$18,820 USD
Brilliant Earth$21,300 USD

32 data points across 20 retailers

21 retailers$3,063 USD to $21,300 USD

A
Cheapest Retailer
-
$3,063 USD
A
Retailer 2
-
$3,228 USD
View
A
Retailer 3
-
$3,335 USD
View
A
Retailer 4
-
$4,134 USD
HK$32,300 HKD
View
A
Retailer 5
-
$4,309 USD
View
A
Retailer 6
-
$4,706 USD
View
A
Retailer 7
-
$4,844 USD
£3,815 GBP
View
A
Retailer 8
-
$4,863 USD
View
A
Retailer 9
-
$6,035 USD
£4,752 GBP
View
A
Retailer 10
-
$6,793 USD
View
Price last confirmed 52 days ago
B+
Retailer 11
-
$7,320 USD
ZAR 118,259 ZAR
View
B+
Retailer 12
-
$7,512 USD
A$11,557 AUD
View
B+
Retailer 13
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$8,654 USD
View
B+
Retailer 14
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$8,741 USD
View
B+
Retailer 15
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$8,985 USD
£7,075 GBP
View
B+
Retailer 16
-
$9,132 USD
View
B+
Retailer 17
-
$9,512 USD
£7,490 GBP
View
B+
Retailer 18
-
$11,964 USD
SGD 16,168 SGD
View
B
Retailer 19
-
$12,196 USD
View
B
Retailer 20
-
$18,820 USD
View
Most Expensive
B
Brilliant Earth
20152777Y · Sep 29
$21,300 USD
View
20 more retailers have this diamond
Prices start from $3,063 USDSave up to $18,237 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
4.21ct Oval
$3,063 USD