Oval|Lab Grown|GIA

4.21ct D IF Oval Lab Grown Diamond

ID • D/IF • GIA 6522350134

Certificate GIA 6522350134

Diamond specifications and retailer prices

From $8,216 USD
As of October 29, 2026
Save $12,444 USD (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $20,660 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.21ct lab-grown oval diamond

This 4.21ct 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 stated by the retailer rather than the lab and certified by GIA 6522350134. Listed at 6 retailers as of October 29, 2026, with prices from $8,216 to $20,660, a $12,444 spread on the same certified stone. Brilliant Earth lists it at $20,660. 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
D
Color
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6522350134
Dimensions12.88 × 9.07 × 5.69 mm
L/W Ratio1.42
Top View
12.88 mm9.07 mm4.21 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522350134
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $20,660 USD|Low: $7,270 USD|High: $21,300 USD|Avg: $11,463 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 18, 2026
Retailer 6$7,270 USD
Retailer 2$8,216 USD
Retailer 5$8,545 USD
Retailer 3$9,531 USD
Retailer 4$11,832 USD
Brilliant Earth$20,660 USD

7 data points across 6 retailers

6 retailers$8,216 USD to $20,660 USD

B+
Cheapest Retailer
-
$8,216 USD
B+
Retailer 2
-
$8,545 USD
View
Retailer 3
-
$9,531 USD
View
Price last confirmed 15 days ago
B+
Retailer 4
-
$9,531 USD
View
B+
Retailer 5
-
$11,832 USD
View
Most Expensive
B
Brilliant Earth
16511530A · Oct 31
$20,660 USD
View
5 more retailers have this diamond
Prices start from $8,216 USDSave up to $12,444 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
4.21ct Oval
$8,216 USD