Oval|Lab Grown|IGI

4.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG773635112

Certificate IGI LG773635112

Diamond specifications and retailer prices

From $2,735 USD
Save $18,565 USD (87%) vs most expensive(unlock to see where)
26 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 LG773635112 or 773635112. Listed at 26 retailers, with prices from $2,735 to $21,300 at Brilliant Earth, a $18,565 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 angle35.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG773635112
Dimensions13.04 × 9.19 × 5.68 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
13.04 mm9.19 mm4.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG773635112
Side View
Table 59.0%Crown 35.4°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 61.8%

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: Sep 28
Current: $21,300 USD|Low: $2,187 USD|High: $21,300 USD|Avg: $6,638 USD
Brilliant Earth
Retailer 2
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Retailer 24
October 1, 2026
Retailer 4$2,735 USD
Retailer 2$2,945 USD
Retailer 23$2,976 USD
Retailer 7$3,063 USD
Retailer 5$3,129 USD
Retailer 9$3,173 USD
Retailer 3$3,228 USD
Retailer 8$3,335 USD
Retailer 13$4,134 USD
Retailer 12$4,309 USD
Retailer 22$4,377 USD
Retailer 14$4,706 USD
Retailer 18$4,834 USD
Retailer 11$4,863 USD
Retailer 10$6,035 USD
Retailer 19$7,320 USD
Retailer 20$7,512 USD
Retailer 6$8,654 USD
Retailer 16$8,741 USD
Retailer 21$8,985 USD
Retailer 17$9,512 USD
Retailer 24$11,964 USD
Retailer 15$18,820 USD
Brilliant Earth$21,300 USD

37 data points across 24 retailers

26 retailers$2,735 USD to $21,300 USD

A
Cheapest Retailer
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$2,735 USD
A
Retailer 2
-
$2,945 USD
£2,319 GBP
View
A
Retailer 3
-
$2,976 USD
View
A
Retailer 4
-
$3,063 USD
View
A
Retailer 5
-
$3,129 USD
View
A
Retailer 6
-
$3,173 USD
View
A
Retailer 7
-
$3,228 USD
View
A
Retailer 8
-
$3,335 USD
View
A
Retailer 9
-
$4,134 USD
HK$32,300 HKD
View
A
Retailer 10
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$4,309 USD
View
A
Retailer 11
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$4,377 USD
View
A
Retailer 12
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$4,706 USD
View
A
Retailer 13
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$4,844 USD
£3,815 GBP
View
A
Retailer 14
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$4,863 USD
View
A
Retailer 15
-
$6,035 USD
£4,752 GBP
View
B+
Retailer 16
-
$7,320 USD
ZAR 118,259 ZAR
View
B+
Retailer 17
-
$7,512 USD
A$11,557 AUD
View
B+
Retailer 18
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$8,654 USD
View
B+
Retailer 19
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$8,741 USD
View
B+
Retailer 20
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$8,985 USD
£7,075 GBP
View
B+
Retailer 21
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$9,132 USD
View
B+
Retailer 22
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$9,512 USD
£7,490 GBP
View
B+
Retailer 23
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$11,964 USD
SGD 16,168 SGD
View
B
Retailer 24
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$12,196 USD
View
B
Retailer 25
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$18,820 USD
View
Most Expensive
B
Brilliant Earth
21305187Y · Sep 29
$21,300 USD
View
25 more retailers have this diamond
Prices start from $2,735 USDSave up to $18,565 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
$2,735 USD