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Oval|Lab Grown|IGI

4.28ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG688516648

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG688516648

Diamond specifications and retailer prices

From $3,368 AUD
£1,863 GBP
As of October 29, 2026
Save $18,239 AUD (84%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $21,607 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 28 retailers as of October 29, 2026, with prices from $3,368 to $21,607, a $18,239 spread on the same certified stone. Do Amore Diamonds lists it at $21,607. 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
Colour
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

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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: $21,607 AUD|Low: $3,347 AUD|High: $21,607 AUD|Avg: $7,756 AUD
Do Amore Diamonds
Retailer 2
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Retailer 25
October 29, 2026
Retailer 20$3,368 AUD
Retailer 14$3,466 AUD
Retailer 3$3,516 AUD
Retailer 4$3,642 AUD
Retailer 17$3,771 AUD
Retailer 22$3,869 AUD
Retailer 21$3,879 AUD
Retailer 25$4,755 AUD
Retailer 13$5,521 AUD
Retailer 8$5,526 AUD
Retailer 23$5,709 AUD
Retailer 9$6,269 AUD
Retailer 24$6,657 AUD
Retailer 15$7,636 AUD
Retailer 2$8,558 AUD
Retailer 10$8,627 AUD
Retailer 12$8,800 AUD
Retailer 11$9,601 AUD
Retailer 6$9,725 AUD
Retailer 5$10,182 AUD
Retailer 19$10,821 AUD
Retailer 7$13,759 AUD
Retailer 18$14,033 AUD
Retailer 16$14,818 AUD
Do Amore Diamonds$21,607 AUD

22 data points across 25 retailers

28 retailers$3,368 AUD to $21,607 AUD

A
Cheapest Retailer
-
$3,368 AUD
£1,863 GBP
A
Retailer 2
-
$3,466 AUD
$2,435 USD
View
A
Retailer 3
-
$3,516 AUD
$2,470 USD
View
Final sale: no returns
A
Retailer 4
-
$3,642 AUD
$2,559 USD
View
A
Retailer 5
-
$3,771 AUD
$2,649 USD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$3,869 AUD
$2,718 USD
View
A
Retailer 7
-
$3,879 AUD
$2,725 USD
View
A
Retailer 8
-
$4,755 AUD
HK$26,100 HKD
View
A
Retailer 9
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$5,049 AUD
$3,547 USD
View
Price last confirmed 17 days ago
A
Retailer 10
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$5,521 AUD
£3,054 GBP
View
A
Retailer 11
-
$5,526 AUD
$3,882 USD
View
A
Retailer 12
-
$5,709 AUD
$4,011 USD
View
A
Retailer 13
-
$6,269 AUD
$4,404 USD
View
A
Retailer 14
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$6,657 AUD
$4,677 USD
View
A
Retailer 15
-
$7,636 AUD
£4,224 GBP
View
A
Retailer 16
-
$8,558 AUD
ZAR 97,128 ZAR
View
B+
Retailer 17
-
$8,627 AUD
View
Price last confirmed 7 days ago
B+
Retailer 18
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$9,601 AUD
$6,745 USD
View
Price last confirmed 8 days ago
B+
Retailer 19
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$9,725 AUD
$6,832 USD
View
B+
Retailer 20
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$10,182 AUD
$7,153 USD
View
B+
Retailer 21
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$10,415 AUD
$7,317 USD
View
B+
Retailer 22
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$10,821 AUD
£5,986 GBP
View
B+
Retailer 23
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$13,413 AUD
£7,420 GBP
View
Price last confirmed 20 days ago
B
Retailer 24
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$13,759 AUD
SGD 13,063 SGD
View
B
Retailer 25
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$14,033 AUD
$9,859 USD
View
B+
Retailer 26
-
$14,818 AUD
$10,410 USD
View
B
Retailer 27
-
$14,818 AUD
$10,410 USD
View
Most Expensive
B
Do Amore Diamonds
27-DF53EF8B5 · Oct 29
$21,607 AUD
$15,180 USD
View
27 more retailers have this diamond
Prices start from $3,368 AUDSave up to $18,239 AUD

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
4.28ct Oval
$3,368 AUD