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Oval|Lab Grown|IGI

4.28ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG688516648

Certificate IGI LG688516648

Diamond specifications and retailer prices

From $2,982 USD
£2,348 GBP
Save $10,358 USD (78%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $13,340 USD at Brilliant Earth
View at Brilliant Earth

About this 4.28ct lab-grown oval diamond

This 4.28ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG688516648 or 688516648. Listed at 27 retailers, with prices from $2,982 to $13,340 at Brilliant Earth, a $10,358 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

4.28
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG688516648
Dimensions13.16 × 9.30 × 5.73 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
13.16 mm9.30 mm4.28 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG688516648
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.6%

Caratlytics Score

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

Price History

Last verified: Oct 1
Current: $13,340 USD|Low: $2,445 USD|High: $15,840 USD|Avg: $6,688 USD|-15.8%
Brilliant Earth
Retailer 2
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October 1, 2026
Retailer 2$2,982 USD
Retailer 5$3,058 USD
Retailer 25$3,327 USD
Retailer 7$3,424 USD
Retailer 6$3,498 USD
Retailer 8$3,547 USD
Retailer 4$3,565 USD
Retailer 11$3,705 USD
Retailer 19$4,122 USD
Retailer 24$4,433 USD
Retailer 13$4,803 USD
Retailer 17$5,205 USD
Retailer 10$5,318 USD
Retailer 26$6,070 USD
Retailer 9$6,126 USD
Retailer 14$6,311 USD
Retailer 23$7,125 USD
Retailer 20$7,412 USD
Retailer 21$7,613 USD
Retailer 22$9,100 USD
Retailer 12$9,423 USD
Retailer 16$9,590 USD
Retailer 15$9,837 USD
Retailer 3$11,912 USD
Retailer 18$12,358 USD
Brilliant Earth$13,340 USD

35 data points across 26 retailers

27 retailers$2,982 USD to $13,340 USD

A
Cheapest Retailer
-
$2,982 USD
£2,348 GBP
A
Retailer 2
-
$3,058 USD
View
A
Retailer 3
-
$3,327 USD
View
A
Retailer 4
-
$3,424 USD
View
A
Retailer 5
-
$3,498 USD
View
A
Retailer 6
-
$3,547 USD
View
A
Retailer 7
-
$3,565 USD
View
A
Retailer 8
-
$3,705 USD
View
A
Retailer 9
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$4,122 USD
HK$32,200 HKD
View
A
Retailer 10
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$4,433 USD
View
A
Retailer 11
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$4,814 USD
£3,790 GBP
View
A
Retailer 12
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$5,205 USD
View
A
Retailer 13
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$5,318 USD
View
A
Retailer 14
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$6,070 USD
€5,781 EUR
View
A
Retailer 15
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$6,126 USD
£4,824 GBP
View
A
Retailer 16
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$6,311 USD
View
B+
Retailer 17
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$7,125 USD
View
B+
Retailer 18
-
$7,412 USD
ZAR 119,737 ZAR
View
B+
Retailer 19
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$7,613 USD
A$11,712 AUD
View
B+
Retailer 20
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$9,100 USD
£7,165 GBP
View
B+
Retailer 21
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$9,134 USD
View
B+
Retailer 22
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$9,423 USD
£7,420 GBP
View
B+
Retailer 23
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$9,590 USD
View
B+
Retailer 24
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$9,837 USD
View
B
Retailer 25
-
$11,912 USD
SGD 16,097 SGD
View
B
Retailer 26
-
$12,358 USD
View
Most Expensive
B
Brilliant Earth
13502387A · Sep 29
$13,340 USD
View
26 more retailers have this diamond
Prices start from $2,982 USDSave up to $10,358 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
4.28ct Oval
$2,982 USD