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Round|Lab Grown|GCAL

5.18ct D FL Round Lab Grown Diamond

EX • D/FL • GCAL 360876045

Certificate GCAL 360876045

Diamond specifications and retailer prices

From £7,077 GBP
$9,483 USD
As of October 31, 2026
Save £20,031 GBP (74%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £27,108 GBP at William & Sons Jewelers · As of October 31, 2026
View at William & Sons Jewelers

About this 5.18ct lab-grown round diamond

This 5.18ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GCAL 360876045. Listed at 6 retailers as of October 31, 2026, with prices from £7,077 to £27,108, a £20,031 spread on the same certified stone. William & Sons Jewelers lists it at £27,108. 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

5.18
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGCAL
CertificateGCAL 360876045
Dimensions11.64 × 9.32 × 6.04 mm
L/W Ratio1.25
Top View
11.64 mm9.32 mm5.18 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 360876045
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.8%

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 31
Current: £14,344 GBP|Low: £7,077 GBP|High: £108,434 GBP|Avg: £41,835 GBP|-63.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
William & Sons Jewelers
October 29, 2026
Retailer 5£7,077 GBP
Retailer 2£9,304 GBP
Retailer 1£14,344 GBP
Retailer 4£22,448 GBP
William & Sons Jewelers£27,108 GBP
Retailer 6£35,029 GBP
Retailer 3£43,280 GBP
Retailer 7£69,254 GBP
Retailer 8£78,426 GBP

18 data points across 9 retailers

6 retailers£7,077 GBP to £27,108 GBP

A
Cheapest Retailer
-
£7,077 GBP
$9,483 USD
A
Retailer 2
-
£9,304 GBP
$12,467 USD
View
B+
Retailer 3
-
£14,344 GBP
View
B
Retailer 4
-
£22,448 GBP
$30,077 USD
View
Most Expensive
B
William & Sons Jewelers
cert_360876045 · Oct 31
£27,108 GBP
$36,322 USD
View
Final sale: no returns
4 more retailers have this diamond
Prices start from £7,077 GBPSave up to £20,031 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
5.18ct Round
£7,077 GBP