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Round|Lab Grown|GIA

4.20ct D IF Round Lab Grown Diamond

EX • D/IF • GIA 2516547474

Certificate GIA 2516547474

Diamond specifications and retailer prices

From £3,729 GBP
$4,966 USD
As of October 28, 2026
Save £19,936 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £29,376 GBP at Zales · As of October 28, 2026
View at Zales

About this 4.2ct lab-grown round diamond

This 4.2ct 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 GIA 2516547474. Listed at 20 retailers as of October 28, 2026, with a 535% 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

4.20
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabGIA
CertificateGIA 2516547474
Dimensions10.28 × 10.32 × 6.43 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
10.28 mm10.32 mm4.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516547474
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
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 28
Current: £10,287 GBP|Low: £3,729 GBP|High: £29,376 GBP|Avg: £12,678 GBP|+0.0%
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
Zales
October 29, 2026
Retailer 3£3,729 GBP
Retailer 14£4,116 GBP
Retailer 12£4,566 GBP
Retailer 2£6,584 GBP
Retailer 10£7,374 GBP
Retailer 9£7,906 GBP
Retailer 1£10,287 GBP
Retailer 11£11,119 GBP
Retailer 7£13,395 GBP
Retailer 8£13,862 GBP
Retailer 6£17,657 GBP
Retailer 13£17,707 GBP
Retailer 5£23,666 GBP
Retailer 4£27,018 GBP
Zales£29,376 GBP

25 data points across 15 retailers

20 retailers£3,729 GBP to £23,666 GBP

A
Cheapest Retailer
-
£3,729 GBP
$4,966 USD
A
Retailer 2
-
£3,927 GBP
$5,230 USD
View
A
Retailer 3
-
£4,116 GBP
$5,481 USD
View
A
Retailer 4
-
£4,556 GBP
$6,067 USD
View
Retailer 5
-
£4,556 GBP
$6,067 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
£4,566 GBP
$6,080 USD
View
B+
Retailer 7
-
£5,970 GBP
$7,950 USD
View
B+
Retailer 8
-
£6,584 GBP
$8,768 USD
View
B+
Retailer 9
-
£7,374 GBP
$9,820 USD
View
B+
Retailer 10
-
£7,906 GBP
€10,027 EUR
View
B+
Retailer 11
-
£10,287 GBP
View
Retailer 12
-
£11,119 GBP
A$22,779 AUD
View
Price last confirmed 7 days ago
B
Retailer 13
-
£12,547 GBP
$16,709 USD
View
B
Retailer 14
-
£13,395 GBP
$17,837 USD
View
Retailer 15
-
£13,862 GBP
$18,460 USD
View
Price under review
B
Retailer 16
-
£17,657 GBP
$23,513 USD
View
B
Retailer 17
-
£17,707 GBP
$23,580 USD
View
B
Retailer 18
-
£23,666 GBP
$31,515 USD
View
Retailer 19
-
£27,018 GBP
$35,980 USD
View
Price under review
Most Expensive
Zales
523340548 · Oct 28
£29,376 GBP
$39,120 USD
View
Price under review
19 more retailers have this diamond
Prices start from £3,729 GBPSave up to £19,936 GBP

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
4.20ct Round
£3,729 GBP