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Marquise|Lab Grown|GCAL

3.12ct D IF Marquise Lab Grown Diamond

EX • D/IF • GCAL 361526164

Shape and cutting style on the report: Marquise brilliant

Certificate GCAL 361526164

Diamond specifications and retailer prices

From £4,885 GBP
$6,545 USD
As of October 31, 2026
Save £8,506 GBP (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £22,642 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.12ct lab-grown marquise diamond

This 3.12ct 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 361526164. Listed at 9 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

3.12
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.4°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 361526164
Dimensions14.46 × 7.86 × 4.84 mm
L/W Ratio1.84
Culet sizeNone
Top View
14.46 mm7.86 mm3.12 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 361526164
Side View
Table 59.0%Crown 34.5°Girdle: MED-MEDPavilion 40.4°Culet: NoneDepth 61.5%

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: £12,970 GBP|Low: £4,612 GBP|High: £32,585 GBP|Avg: £12,418 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£4,612 GBP
Retailer 4£4,885 GBP
Retailer 9£5,640 GBP
Retailer 7£6,945 GBP
Retailer 3£9,426 GBP
Retailer 5£9,426 GBP
Retailer 6£12,709 GBP
Retailer 1£12,970 GBP
Retailer 2£13,391 GBP
Taylor and Hart£22,642 GBP
Retailer 8£32,585 GBP

13 data points across 11 retailers

9 retailers£4,885 GBP to £13,391 GBP

A
Cheapest Retailer
-
£4,885 GBP
$6,545 USD
B+
Retailer 2
-
£5,640 GBP
CA$10,496 CAD
View
B+
Retailer 3
-
£6,945 GBP
$9,305 USD
View
B+
Retailer 4
-
£9,426 GBP
$12,630 USD
View
B
Retailer 5
-
£9,426 GBP
$12,630 USD
View
B
Retailer 6
-
£12,970 GBP
View
B
Retailer 7
-
£13,391 GBP
$17,942 USD
View
Most Expensive
Taylor and Hart
63ITWXJ · Oct 31
£22,642 GBP
$30,338 USD
View
Price under review
7 more retailers have this diamond
Prices start from £4,885 GBPSave up to £8,506 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
3.12ct Marquise
£4,885 GBP