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Round|Lab Grown|IGI

4.21ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG769629571

Shape and cutting style on the report: Round brilliant

Certificate IGI LG769629571

Diamond specifications and retailer prices

From €3,117 EUR
$3,482 USD
As of November 1, 2026
Save €9,599 EUR (75%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €12,716 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.21ct lab-grown round diamond

This 4.21ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG769629571 or 769629571. Listed at 24 retailers as of October 31, 2026, with prices from €3,117 to €12,716, a €9,599 spread on the same certified stone. Taylor and Hart lists it at €12,716. 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
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG769629571
Dimensions10.44 × 10.50 × 6.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.44 mm10.50 mm4.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG769629571
Side View
Table 57.0%Crown 32.8°Girdle: MediumPavilion 41°Culet: NoneDepth 60.6%

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: Nov 1
Current: €7,745 EUR|Low: €2,992 EUR|High: €12,250 EUR|Avg: €5,847 EUR
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
November 1, 2026
Retailer 2€3,117 EUR
Retailer 8€3,391 EUR
Retailer 10€3,490 EUR
Retailer 7€3,533 EUR
Retailer 4€3,615 EUR
Retailer 15€3,616 EUR
Retailer 9€4,518 EUR
Retailer 12€4,812 EUR
Retailer 18€4,987 EUR
Retailer 5€5,609 EUR
Retailer 13€5,796 EUR
Retailer 17€6,637 EUR
Retailer 14€7,694 EUR
Retailer 1€7,745 EUR
Retailer 11€7,808 EUR
Retailer 3€8,658 EUR
Retailer 16€8,897 EUR
Retailer 6€12,250 EUR

42 data points across 18 retailers

24 retailers€3,117 EUR to €12,716 EUR

A
Cheapest Retailer
-
€3,117 EUR
$3,482 USD
A
Retailer 2
-
€3,391 EUR
$3,789 USD
View
A
Retailer 3
-
€3,490 EUR
$3,899 USD
View
Final sale: no returns
A
Retailer 4
-
€3,533 EUR
$3,947 USD
View
A
Retailer 5
-
€3,615 EUR
$4,039 USD
View
Retailer 6
-
€3,615 EUR
$4,039 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
€3,616 EUR
$4,040 USD
View
B+
Retailer 8
-
€4,228 EUR
HK$36,900 HKD
View
B+
Retailer 9
-
€4,518 EUR
$5,048 USD
View
B+
Retailer 10
-
€4,812 EUR
£4,233 GBP
View
B+
Retailer 11
-
€4,904 EUR
$5,479 USD
View
B+
Retailer 12
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€4,987 EUR
$5,572 USD
View
B+
Retailer 13
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€5,609 EUR
$6,266 USD
View
B+
Retailer 14
-
€5,796 EUR
View
Retailer 15
-
€6,637 EUR
$7,415 USD
View
Price last confirmed 11 days ago
B+
Retailer 16
-
€7,694 EUR
ZAR 138,874 ZAR
View
B+
Retailer 17
-
€7,745 EUR
£6,813 GBP
View
B
Retailer 18
-
€7,808 EUR
A$13,420 AUD
View
B
Retailer 19
-
€8,658 EUR
$9,673 USD
View
B
Retailer 20
-
€8,897 EUR
$9,940 USD
View
B
Retailer 21
-
€9,072 EUR
$10,135 USD
View
B
Retailer 22
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€10,034 EUR
$11,210 USD
View
B
Retailer 23
-
€12,250 EUR
SGD 18,494 SGD
View
Most Expensive
B
Taylor and Hart
XMLVMUP · Oct 31
€12,716 EUR
$14,206 USD
View
23 more retailers have this diamond
Prices start from €3,117 EURSave up to €9,599 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
4.21ct Round
€3,117 EUR