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Marquise|Lab Grown|GCAL

3.18ct D IF Marquise Lab Grown Diamond

ID • D/IF • GCAL 360876139

Shape and cutting style on the report: Marquise brilliant

Certificate GCAL 360876139

Diamond specifications and retailer prices

From £4,979 GBP
$6,671 USD
As of November 2, 2026
Save £8,669 GBP (64%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £22,910 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.18ct lab-grown marquise diamond

This 3.18ct lab-grown marquise 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 GCAL 360876139. Listed at 10 retailers as of October 30, 2026, with a 174% 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

3.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 360876139
Dimensions14.38 × 7.82 × 4.95 mm
L/W Ratio1.84
Culet sizeNone
Top View
14.38 mm7.82 mm3.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 360876139
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.3%

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: Nov 2
Current: £13,213 GBP|Low: £4,694 GBP|High: £33,212 GBP|Avg: £12,238 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 1, 2026
Retailer 10£4,694 GBP
Retailer 4£4,979 GBP
Retailer 9£5,748 GBP
Retailer 7£7,077 GBP
Retailer 5£8,141 GBP
Retailer 3£9,605 GBP
Retailer 6£9,605 GBP
Retailer 1£13,213 GBP
Retailer 2£13,648 GBP
Taylor and Hart£22,910 GBP
Retailer 8£33,212 GBP

15 data points across 11 retailers

10 retailers£4,979 GBP to £13,648 GBP

A
Cheapest Retailer
-
£4,979 GBP
$6,671 USD
B+
Retailer 2
-
£5,748 GBP
CA$10,697 CAD
View
B+
Retailer 3
-
£7,077 GBP
$9,483 USD
View
B+
Retailer 4
-
£8,141 GBP
$10,908 USD
View
B+
Retailer 5
-
£9,605 GBP
$12,870 USD
View
B
Retailer 6
-
£9,605 GBP
$12,870 USD
View
B
Retailer 7
-
£13,213 GBP
View
B
Retailer 8
-
£13,648 GBP
$18,287 USD
View
Most Expensive
Taylor and Hart
FUBSJAJ · Oct 31
£22,910 GBP
$30,697 USD
View
Price under review
8 more retailers have this diamond
Prices start from £4,979 GBPSave up to £8,669 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
3.18ct Marquise
£4,979 GBP