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Round|Lab Grown|IGI

4.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG660448727

Shape and cutting style on the report: Round brilliant

Certificate IGI LG660448727

Diamond specifications and retailer prices

From €2,626 EUR
£2,310 GBP
As of October 30, 2026
Save €15,563 EUR (86%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: €18,188 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.51ct lab-grown round diamond

This 4.51ct lab-grown round 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 LG660448727 or 660448727. Listed at 29 retailers as of October 30, 2026, with prices from €2,626 to €18,188, a €15,563 spread on the same certified stone. Do Amore Diamonds lists it at €18,188. 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 angle35.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660448727
Dimensions10.60 × 10.53 × 6.55 mm
L/W Ratio1.01
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
10.60 mm10.53 mm4.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660448727
Side View
Table 57.0%Crown 35.7°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: €18,188 EUR|Low: €2,538 EUR|High: €24,006 EUR|Avg: €7,177 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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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
October 31, 2026
Retailer 14€2,626 EUR
Retailer 4€2,643 EUR
Retailer 10€2,960 EUR
Retailer 5€3,067 EUR
Retailer 8€3,067 EUR
Retailer 2€3,070 EUR
Retailer 7€3,102 EUR
Retailer 6€3,909 EUR
Retailer 20€4,406 EUR
Retailer 15€4,486 EUR
Retailer 18€4,655 EUR
Retailer 16€7,203 EUR
Retailer 19€7,294 EUR
Retailer 9€8,442 EUR
Retailer 3€8,453 EUR
Retailer 17€8,625 EUR
Retailer 11€11,599 EUR
Retailer 12€11,848 EUR
Retailer 13€12,728 EUR
Do Amore Diamonds€18,188 EUR

34 data points across 20 retailers

29 retailers€2,626 EUR to €18,188 EUR

A+
Cheapest Retailer
-
€2,626 EUR
£2,310 GBP
A
Retailer 2
-
€2,643 EUR
$2,953 USD
View
A
Retailer 3
-
€2,960 EUR
$3,307 USD
View
Final sale: no returns
Retailer 4
-
€3,067 EUR
$3,426 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
€3,067 EUR
$3,426 USD
View
A
Retailer 6
-
€3,070 EUR
$3,430 USD
View
A
Retailer 7
-
€3,102 EUR
$3,466 USD
View
Retailer 8
-
€3,416 EUR
$3,816 USD
View
Price last confirmed 36 days ago
Retailer 9
-
€3,580 EUR
$4,000 USD
View
Price last confirmed 38 days ago
Retailer 10
-
€3,908 EUR
$4,366 USD
View
Price last confirmed 34 days ago
A
Retailer 11
-
€3,909 EUR
$4,367 USD
View
A
Retailer 12
-
€4,010 EUR
HK$35,000 HKD
View
A
Retailer 13
-
€4,229 EUR
$4,725 USD
View
A
Retailer 14
-
€4,406 EUR
$4,922 USD
View
A
Retailer 15
-
€4,486 EUR
£3,946 GBP
View
A
Retailer 16
-
€4,655 EUR
$5,201 USD
View
Retailer 17
-
€5,465 EUR
$6,106 USD
View
Price last confirmed 34 days ago
Retailer 18
-
€6,227 EUR
$6,957 USD
View
Price last confirmed 89 days ago
B+
Retailer 19
-
€7,203 EUR
ZAR 129,997 ZAR
View
Retailer 20
-
€7,294 EUR
A$12,536 AUD
View
Price last confirmed 9 days ago
B+
Retailer 21
-
€7,734 EUR
$8,641 USD
View
B+
Retailer 22
-
€8,442 EUR
$9,432 USD
View
B+
Retailer 23
-
€8,453 EUR
$9,444 USD
View
B+
Retailer 24
-
€8,625 EUR
£7,587 GBP
View
Retailer 25
-
€9,594 EUR
£8,440 GBP
View
Price last confirmed 22 days ago
B
Retailer 26
-
€11,599 EUR
SGD 17,512 SGD
View
B
Retailer 27
-
€11,848 EUR
$13,237 USD
View
B+
Retailer 28
-
€12,728 EUR
$14,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-9447D23E4 · Oct 31
€18,188 EUR
$20,320 USD
View
28 more retailers have this diamond
Prices start from €2,626 EURSave up to €15,563 EUR

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+
4.51ct Round
€2,626 EUR