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Round|Lab Grown|GIA

4.28ct D IF Round Lab Grown Diamond

EX • D/IF • GIA 1523375211

Certificate GIA 1523375211

Diamond specifications and retailer prices

From £3,830 GBP
$5,132 USD
As of October 30, 2026
Save £20,591 GBP (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £27,346 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.28ct lab-grown round diamond

This 4.28ct 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 1523375211. Listed at 20 retailers as of October 29, 2026, with a 538% 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

4.28
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 1523375211
Dimensions10.37 × 10.40 × 6.42 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Girdle conditionFaceted
Top View
10.37 mm10.40 mm4.28 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523375211
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.8%

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 30
Current: £27,346 GBP|Low: £3,830 GBP|High: £29,749 GBP|Avg: £13,557 GBP|-0.5%
Do Amore Diamonds
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
October 30, 2026
Retailer 4£3,830 GBP
Retailer 13£4,620 GBP
Retailer 3£6,668 GBP
Retailer 11£7,463 GBP
Retailer 10£8,007 GBP
Retailer 8£10,412 GBP
Retailer 12£11,260 GBP
Retailer 7£11,721 GBP
Retailer 2£14,038 GBP
Retailer 9£14,038 GBP
Retailer 6£17,818 GBP
Retailer 14£17,927 GBP
Retailer 5£24,421 GBP
Do Amore Diamonds£27,346 GBP

27 data points across 14 retailers

20 retailers£3,830 GBP to £24,421 GBP

A
Cheapest Retailer
-
£3,830 GBP
$5,132 USD
A
Retailer 2
-
£3,975 GBP
$5,326 USD
View
A
Retailer 3
-
£4,166 GBP
$5,582 USD
View
Retailer 4
-
£4,611 GBP
$6,178 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£4,611 GBP
$6,178 USD
View
A
Retailer 6
-
£4,620 GBP
$6,190 USD
View
B+
Retailer 7
-
£6,042 GBP
$8,095 USD
View
B+
Retailer 8
-
£6,668 GBP
$8,934 USD
View
B+
Retailer 9
-
£7,463 GBP
$10,000 USD
View
B+
Retailer 10
-
£8,007 GBP
€10,217 EUR
View
B+
Retailer 11
-
£10,412 GBP
View
Retailer 12
-
£11,260 GBP
A$23,211 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£11,721 GBP
$15,706 USD
View
B
Retailer 14
-
£12,708 GBP
$17,027 USD
View
B+
Retailer 15
-
£14,038 GBP
$18,810 USD
View
Retailer 16
-
£14,038 GBP
$18,810 USD
View
Price under review
B
Retailer 17
-
£17,818 GBP
$23,874 USD
View
B
Retailer 18
-
£17,927 GBP
$24,020 USD
View
B
Retailer 19
-
£24,421 GBP
$32,722 USD
View
Most Expensive
Do Amore Diamonds
27-3948393E0 · Oct 29
£27,346 GBP
$36,640 USD
View
Price under review
19 more retailers have this diamond
Prices start from £3,830 GBPSave up to £20,591 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
4.28ct Round
£3,830 GBP