Oval|Lab Grown|IGI

4.51ct D IF Oval Lab Grown Diamond

ID • D/IF • IGI LG681578645

Certificate IGI LG681578645

Diamond specifications and retailer prices

From $6,083 USD
Save $21,277 USD (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $39,590 USD at Do Amore Diamonds
View at Do Amore Diamonds

About this 4.51ct lab-grown oval diamond

This 4.51ct 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 LG681578645 or 681578645. Listed at 24 retailers, with a 350% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681578645
Dimensions12.99 × 9.32 × 5.91 mm
L/W Ratio1.39
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 mm9.32 mm4.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681578645
Side View
Table 59.0%Crown 36.7°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 63.4%

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: $18,990 USD|Low: $4,601 USD|High: $27,360 USD|Avg: $11,882 USD|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
October 1, 2026
Retailer 8$6,083 USD
Retailer 2$6,102 USD
Retailer 7$6,675 USD
Retailer 19$7,782 USD
Retailer 18$8,425 USD
Retailer 14$8,524 USD
Retailer 6$9,206 USD
Retailer 15$9,421 USD
Retailer 13$9,459 USD
Retailer 3$10,516 USD
Retailer 20$11,991 USD
Retailer 11$13,997 USD
Retailer 17$14,906 USD
Retailer 12$15,395 USD
Retailer 16$16,331 USD
Retailer 9$18,370 USD
Retailer 1$18,990 USD
Retailer 4$20,142 USD
Retailer 5$20,900 USD
Retailer 10$25,485 USD
Retailer 21$27,360 USD

34 data points across 21 retailers

24 retailers$6,083 USD to $27,360 USD

A
Cheapest Retailer
-
$6,083 USD
A
Retailer 2
-
$6,102 USD
View
A
Retailer 3
-
$6,675 USD
View
B+
Retailer 4
-
$7,782 USD
View
B+
Retailer 5
-
$8,425 USD
View
B+
Retailer 6
-
$8,524 USD
View
B+
Retailer 7
-
$8,732 USD
View
Price last confirmed 52 days ago
B+
Retailer 8
-
$9,206 USD
View
B+
Retailer 9
-
$9,246 USD
£7,280 GBP
View
Price last confirmed 21 days ago
B+
Retailer 10
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$9,442 USD
£7,435 GBP
View
B+
Retailer 11
-
$9,459 USD
HK$73,900 HKD
View
B+
Retailer 12
-
$10,516 USD
£8,280 GBP
View
B+
Retailer 13
-
$11,991 USD
€11,420 EUR
View
B+
Retailer 14
-
$13,997 USD
View
B+
Retailer 15
-
$14,906 USD
£11,737 GBP
View
B
Retailer 16
-
$15,395 USD
ZAR 248,712 ZAR
View
B
Retailer 17
-
$16,331 USD
A$25,124 AUD
View
B
Retailer 18
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$18,370 USD
View
B
Retailer 19
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$18,990 USD
A$29,216 AUD
View
B
Retailer 20
-
$20,142 USD
View
B
Retailer 21
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$20,900 USD
View
B
Retailer 22
-
$25,485 USD
View
B
Retailer 23
-
$27,360 USD
SGD 36,973 SGD
View
Most Expensive
B
Do Amore Diamonds
27-20F7E6B7E · Sep 30
$39,590 USD
View
Price under review
23 more retailers have this diamond
Prices start from $6,083 USDSave up to $21,277 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
4.51ct Oval
$6,083 USD